BUILDING
SAN DIEGO

CONTACT BUCKLEY BUILDERS, INC. FOR ADU CONSULTATION

ADU

Welcome to
the ADU Guidebook
Buckley Builders Inc.

We made a guidebook to help you plan and build an ADU or Accessory Dwelling Unit in San Diego County. There are 4 sections:

Skip to Section:

Frequently Asked Questions

What is an ADU?
An Accessory Dwelling Unit (ADU) is a secondary housing unit located on the same lot as a primary residence.
Can I build an ADU on my property?
Yes, provided your property meets the zoning and building requirements for ADUs.
What types of ADUs can I build?
You can build detached, attached, or converted ADUs, as well as Junior ADUs (JADUs).
Do I need a permit to build an ADU?
Yes, a building permit is required for all types of ADUs.
How big can my ADU be?
Detached ADUs can be up to 1,200 square feet, while attached ADUs are limited to 50% of the primary residence or 1,200 square feet, whichever is smaller.
How tall can my ADU be?
The height limit for an ADU is generally 16 feet but can be up to 25 feet in specific cases.
How much will it cost to build an ADU?
Costs vary based on design, size, and location. Here's a breakdown of estimated budget percentages:
- Construction Costs (60-70%): This includes materials, labor, and any site preparation.
- Permitting and Fees (5-10%): Building permits, impact fees, and other regulatory fees.
- Design and Architecture (10-15%): Fees for architects or designers to create plans.
- Utility Connections (5-10%): Costs associated with connecting to water, electricity, and sewage.
- Landscaping and Exterior Work (5%): Additional costs for landscaping, driveways, and outdoor spaces.
How long does it take to get an ADU permit?
The permitting process typically takes several months, depending on the project's scope and compliance with local regulations.
Can I convert my garage into an ADU?
Yes, converting a garage into an ADU is allowed if it meets all building and zoning requirements.
What are the setback requirements for an ADU?
ADUs generally require a minimum of four feet from the side and rear property lines.
Can I rent out my ADU?
Yes, ADUs can be rented, but they must be for long-term rentals of 30 days or more.
Do I need to live on the property to have an ADU?
Owner-occupancy is required for Junior ADUs, but not for standard ADUs.
Will building an ADU raise my property taxes?
Only the newly built ADU will be assessed for property taxes, not the entire property.
How do utility connections work for an ADU?
ADUs can either share utilities with the main house or have separate connections, depending on your preference and local regulations.
Can I sell my ADU separately from my main house?
No, ADUs cannot be sold separately from the primary residence.
Are ADUs subject to fire safety regulations?
Yes, ADUs must comply with local fire safety standards, including adequate fire access and distance from property lines.
Do I need additional parking for my ADU?
Parking is generally not required for ADUs located near public transit or in walkable areas.
Can I use my ADU as a short-term rental?
No, ADUs must be rented for periods longer than 30 days.
Do ADUs have different design requirements?
Yes, ADUs must comply with local design standards, including size, height, and exterior materials.
What financing options are available for building an ADU?
Homeowners can explore various financing options such as loans, grants, or special ADU programs.
Can I build more than one ADU on my property?
Single-family properties can have one ADU and one Junior ADU, while multifamily properties can have up to two detached ADUs.
Can I build an ADU if my property is on a septic system?
Yes, but you must consult with the Department of Environmental Health to ensure your septic system can handle the additional load.
How can I ensure my ADU complies with local regulations?
Work with a knowledgeable builder and consult local zoning and building codes before starting your project.
Are there fees for ADU permits?
Yes, you’ll need to pay for building permits, impact fees, and any other required assessments.
Why should I consult a professional builder before starting my ADU project?
A professional builder can help navigate regulations, avoid costly mistakes, and ensure your ADU is built efficiently and to code.
Where can I find the most updated information about current ordinances on ADUs?
Refer to the County's ADU and JADU Regulations handout for the latest information. San Diego County ADU and JADU Regulations https://www.sandiegocounty.gov/content/sdc/pds/bldg/adu.html
Who can I talk to for ADU-related planning questions?
Contact the County Planning and Development Services Department at pdszoningpermitcounter@sdcounty.ca.gov or visit their office at 5510 Overland Ave, San Diego, CA 92123.
What if the structure was already converted into a rental without permits?
The requirements for ADUs still apply. If this was the only conversion on the property, it may qualify as an ADU. Plans for an As-Built structure must be processed and designed as if it were new. For options and assistance, email PDS. mailto:ADUquestions@sdcounty.ca.gov
Can a JADU connect to the main house through a door?
Yes, a JADU (Junior ADU) can connect to the main house through an interior door, as long as it meets all other building and zoning requirements.
Are solar panels required for an ADU?
Yes, new ADUs in California, including San Diego County, are required to have solar panels as part of the state’s energy efficiency standards for residential buildings.
Does an ADU have to be ADA-compliant?
ADUs do not have to be fully ADA-compliant unless they are specifically intended for use as a public accommodation or in certain rental situations where accessibility is required.
Is there a minimum size for an ADU? Can an ADU be tiny?
Yes, the minimum size for an ADU in San Diego is 150 square feet, which can allow for a very small, "tiny" ADU, as long as it meets basic living requirements.
Is an ADU the same thing as a Tiny House?
No, an ADU is a permanent structure with foundation requirements, while a Tiny House is often built on wheels and may not meet local building codes for ADUs.
Can a trailer be an ADU?
No, trailers or other mobile units generally do not qualify as ADUs under San Diego County’s regulations, as ADUs must be on a permanent foundation.
How much did property values increase after adding an ADU to a house in San Diego County?
Studies suggest that adding an ADU can increase property values in San Diego County by 20% to 30%, depending on factors like location and quality of construction.

What is an ADU? An Accessory Dwelling Unit (ADU) is a secondary housing unit located on the same lot as a primary residence.

Can I build an ADU on my property? Yes, provided your property meets the zoning and building requirements for ADUs.

FAQ

reg change

Recent changes to ADU regulations in San Diego help homeowners:

Streamlined Permitting: Faster approvals help you start your ADU project sooner.
Increased Flexibility: More design options allow you to create a space that fits your needs.
Lower Fees: Reduced permit costs make building an ADU more affordable. (This just expired in January 2024)
Easier Compliance: Clearer regulations simplify the compliance process for homeowners.
Affordable Housing Support: These changes encourage more housing options for the community.
Enhanced Property Value: Building an ADU can increase your property’s value and rental potential.

Get A Consulation

ADU Planning Steps:

Building an Accessory Dwelling Unit (ADU) can be an exciting opportunity to maximize your property while providing additional living space for family or potential rental income. At Buckley Builders, Inc., (General Contractor License. # 109051) we’re here to guide you through every step of the process, ensuring a seamless experience tailored to the unique characteristics of San Diego.

Check Eligibility: Start by reviewing your property’s zoning regulations to confirm you can build an ADU. Consider factors like lot size and neighborhood guidelines.
Explore the ADU Guidebook: Familiarize yourself with the San Diego ADU Guidebook for essential information on design standards and construction requirements.
Design Your ADU: Collaborate with a licensed architect or designer to create plans that meet local codes while maximizing your space's functionality and style.
Gather Your Documents: Compile all necessary paperwork for your permit application, including site plans and construction drawings as outlined in the guidebook.
Submit Your Application: File your building permit application with the City of San Diego’s Development Services Department, ensuring all required forms and fees are included.
Respond to Feedback: Be open to comments from city planners during the review process to keep your project on track.
Get Your Permit: Once approved, you'll receive the building permit to start construction on your new ADU.
Start Building: Choose a licensed contractor like Buckley Builders, Inc., who is well-versed in San Diego ADU regulations to ensure your project runs smoothly.
Schedule Inspections: Arrange for necessary inspections throughout the construction process to ensure compliance with building codes and safety standards.
Final Approval: Once construction is complete and all inspections pass, obtain your Certificate of Occupancy to officially enjoy your new ADU!

ADU Planning Steps:

Building an Accessory Dwelling Unit (ADU) can be an exciting opportunity to maximize your property while providing additional living space for family or potential rental income. At Buckley Builders, Inc., (General Contractor License. # 109051) we’re here to guide you through every step of the process, ensuring a seamless experience tailored to the unique characteristics of San Diego. Check Eligibility: Start by reviewing your property’s zoning regulations to confirm you can build an ADU. Consider factors like lot size and neighborhood guidelines. Explore the ADU Guidebook: Familiarize yourself with the San Diego ADU Guidebook for essential information on design standards and construction requirements. Design Your ADU: Collaborate with a licensed architect or designer to create plans that meet local codes while maximizing your space's functionality and style. Gather Your Documents: Compile all necessary paperwork for your permit application, including site plans and construction drawings as outlined in the guidebook. Submit Your Application: File your building permit application with the City of San Diego’s Development Services Department, ensuring all required forms and fees are included. Respond to Feedback: Be open to comments from city planners during the review process to keep your project on track. Get Your Permit: Once approved, you'll receive the building permit to start construction on your new ADU. Start Building: Choose a licensed contractor like Buckley Builders, Inc., who is well-versed in San Diego ADU regulations to ensure your project runs smoothly. Schedule Inspections: Arrange for necessary inspections throughout the construction process to ensure compliance with building codes and safety standards. Final Approval: Once construction is complete and all inspections pass, obtain your Certificate of Occupancy to officially enjoy your new ADU!

ADU Permit Steps:

Preliminary Review: Check zoning and building codes on the San Diego County Planning and Development Services (PDS) website Submit Application: Complete and submit the ADU permit application via the PDS Online Portal. You may submit applications online or in person at the County Permit Center located at our County Operations Center on the 1st floor of 5510 Overland Ave, San Diego, CA 92123. Plan Review: Your plans will undergo review by county staff for compliance. Permit Issuance: Once approved, receive your construction permit. Inspections: Schedule inspections through the PDS Inspections page https://www.sandiego.gov/development-services/permits-inspections For more details, refer to the San Diego County ADU Handbook https://www.sandiegocounty.gov/content/dam/sdc/pds/advance/adu-handbook.pdf

ADU Permit Steps:

Preliminary Review: Check zoning and building codes on the San Diego County Planning and Development Services (PDS) website
Submit Application: Complete and submit the ADU permit application via the PDS Online Portal. You may submit applications online or in person at the County Permit Center located at our County Operations Center on the 1st floor of 5510 Overland Ave, San Diego, CA 92123.
Plan Review: Your plans will undergo review by county staff for compliance.
Permit Issuance: Once approved, receive your construction permit.
Inspections: Schedule inspections through the PDS Inspections page https://www.sandiego.gov/development-services/permits-inspections

For more details, refer to the San Diego County ADU Handbook https://www.sandiegocounty.gov/content/dam/sdc/pds/advance/adu-handbook.pdf

ADU Building Steps

Buckley Builders, Inc., (General Contractor License. # 109051) streamlines all stages of planning, permitting, and construction. Below is a simplified version of the approach recommended by the County of San Diego.

1. Decide and Prepare

Take Photos: Once you have an idea of the ADU type you want, start by capturing all angles of the available space on your property.
Make a Sketch: Create a rough layout of your lot, indicating the placement and dimensions of existing structures. Factor in important elements like septic systems or easements.
Collect Information: Retrieve a Property Summary Report and meet with County Planning and Development Services (PDS) to discuss design options, site-specific factors, and potential constraints.
Consult with a Professional: this is a great time to have a consultation with Buckley Builders, Inc. Asking questions now ,can save save money later.

2. Design and Apply for a Building Permit

Draft Plans & Determine Costs: Decide whether to hire an architect or designer, create your own plans, or use Pre-Approved County ADU Plans to save time and money. Consider the cost implications of each approach.
Finalize Construction Drawings: Make sure all necessary calculations, support documents, and construction plans are completed and ready for submission.
Submit for Plan Review and Pay Fees: Go through the pre-intake process at the County office and set up an appointment to begin the formal plan review.

3. Obtain Permit

Revise Drawings and Resubmit: If your plans require revisions after review, adjust the drawings and resubmit them until all comments are addressed.
Obtain Bids from Contractors: Secure bids from contractors to ensure you have a solid understanding of the development costs before obtaining an official building permit.
Building Permit Issued: Once all approvals are secured and fees are paid, the building permit is issued. This permit is valid for 2 years but can be extended.

4. Construct Your ADU

Select Contractor: Buckley Builders, Inc., is a great choice. Choose a licensed contractor who is in good standing with the California State Licensing Board (CSLB).
Begin Construction: Your contractor will start construction, ensuring all local building codes and standards are followed.
Construction Inspections: Throughout the process, periodic inspections by local authorities will ensure that the project meets all regulations.
Certificate of Occupancy: After the final inspection is approved, the County issues a Certificate of Occupancy, and you’re ready to enjoy your new ADU!

Additional Considerations

Eligibility and Size Limits: Confirm the maximum allowable size for your ADU. The size limit is influenced by your lot size and the square footage of your primary residence.
Pre-Approved Plans: The County offers Pre-Approved Standard ADU Building Plans that can simplify the design and permitting process, potentially saving time and costs.
Septic Systems: If your property relies on a septic system, ensure that your ADU plans account for the additional load.
Permitting Fees: Fees vary based on the size and type of ADU being built. Check the Development Fees for estimates specific to your project.
Contractor or Owner-Builder: Decide whether to hire a general contractor or manage the project yourself under an Owner-Builder Permit. We recommend calling Buckley Builders, Inc.

Costs:

Permits and Fees (5-10%): Building permits, impact fees, and other local agency charges.
Design Costs (10-15%): Architect or designer fees for custom plans, or savings if you use the pre-approved ADU designs provided by the city.
Construction Costs (60-70%): Labor and materials for site preparation, foundation, framing, electrical, plumbing, and finish work. Detached ADUs generally cost more than garage conversions.
Utility Upgrades (5-10%): Separate metering, upgrades to water, sewer, gas, and electrical connections, and any new infrastructure required.
Septic and Environmental Costs: If on a septic system, additional evaluations and potential system upgrades may be required.
Impact Fees: Reduced or waived for smaller ADUs, but larger units may still incur impact fees.
Financing and Interest Costs: Depending on the financing option used (e.g., home equity loan, ADU-specific financing).
Soft Costs: Inspections, engineering reports, soil studies, or environmental assessments.
Landscaping and Exterior Work (5%): Additional costs for landscaping, driveways, and outdoor spaces.

Benefits of an Accessory Dwelling Unit (ADU):

Increased Property Value: An ADU can enhance your property’s value and appeal, making it more attractive to potential buyers.
Additional Income: Renting out your ADU provides a steady income stream, helping to offset mortgage payments or other expenses.
Flexible Living Space: ADUs offer versatile living arrangements, perfect for accommodating family members, guests, or even a home office.
Affordable Housing Options: ADUs can contribute to the local housing supply by providing affordable living spaces for renters or family members.
Support for Aging in Place: They offer a solution for elderly family members who want to live independently while staying close to loved ones.
Sustainable Development: ADUs utilize existing infrastructure and can help reduce urban sprawl, promoting sustainable community growth.
Enhanced Lifestyle: They allow homeowners to create multi-generational living spaces, fostering family connections and support systems.
Tax Benefits: Some jurisdictions offer tax incentives or benefits for building ADUs, making the investment more attractive.
Easier Permit Process: Many areas are streamlining the permitting process for ADUs, making it easier to get started on your project.
Community Cohesion: ADUs can enhance neighborhood diversity and strengthen community ties by creating more housing options.

Overall, building an ADU can be a smart investment that meets both personal and community needs.

Costs

Planning

Building

benefits

Permits

Planning process

ADU Planning Guidebook

Below are some guidelines and general information helpful for planning an ADU construction project in San Diego County.

Skip to Section:

Frequently Asked Questions (FAQ)

Resources

consulting

ASK
ANY
QUESTION

Consult with Buckley Builders

Our experienced team is committed to supporting you in navigating local regulations and ensuring your ADU meets your needs. We offer:

Expert guidance on zoning and permitting for your ADU project.
Feasibility assessments based on your property’s unique characteristics.
Design optimization tailored to the San Diego lifestyle.
Cost estimates to help you plan your budget effectively.
Streamlined permitting processes to reduce potential delays.
Access to a network of top craftsmen and designers.

With Buckley Builders, Inc., your dream ADU can become a reality! Let’s work together to create a functional space that enhances your property and aligns with your vision. Get a quote.

Get A Consulation

project management

First Meeting

about BBI

license

BBB

Consultation/ Site Evaluation:

In your first meeting with me, you can expect a warm welcome. I will listen carefully to your ideas and vision for the project. will discuss your budget and timeline to ensure we are the same page. I aim to make you feel comfortable and supported as we start this exciting journey together.

How We Organize Your Project

Real-Time Project Management
Buckley Builders, Inc. utilizes Buildertrend project management to give you easy access to track progress, timelines, and milestones in real time, ensuring you're always in the loop.
Clear Communication
Our platform ensures transparent communication between you and the construction team, offering quick updates and prompt responses to your questions.
Budget Tracking
Keep a close eye on project expenses through our budget tracking tool. You’ll receive notifications of any changes and stay in control of your finances.
Document Management
All contracts, permits, and design plans are stored in one organized place, making it easy to access essential documents when needed.
Scheduling Transparency
Our scheduling tools allow you to follow the project timeline, understand subcontractor availability, and stay on top of upcoming tasks and deadlines.
Visual Updates
You’ll receive regular photo updates to visually track your project’s progress, ensuring it aligns with your expectations.
Efficient Change Orders
Easily manage change orders by reviewing and approving adjustments to the scope of work, budget, or timeline without hassle.
Personalized Portal Access
Your customized portal keeps you updated on all project details, giving you direct communication and project information at your fingertips.
Comprehensive Reporting
Generate detailed reports on project status, budget, and timeline to stay informed and have meaningful discussions with our team.
Mobile Access
Our mobile app lets you stay connected and updated from anywhere, giving you flexibility and control throughout the construction process.

About Us

1. Experience
Experience You Can Trust At Buckley Builders, Inc., (General Contractor License. # 109051) we take pride in our extensive portfolio of completed ADU projects that showcase our commitment to quality and craftsmanship. Don’t just take our word for it; our satisfied clients consistently share their positive experiences in our testimonials. Each project reflects our dedication to meeting the unique needs of San Diego homeowners, ensuring that your vision comes to life seamlessly.

2. Project Management
Streamlined Project Management We utilize Buildertrend project management software to keep your ADU project organized and transparent. This innovative tool allows us to track every detail, from schedules to expenses, ensuring that you are always informed about your project's progress. With clear communication and real-time updates, you can have peace of mind knowing that your investment is in capable hands.

3. Customization and Collaboration
Your Vision, Our Expertise At Buckley Builders, we understand that every homeowner has unique needs and preferences. That’s why we collaborate closely with you to customize your ADU to fit your lifestyle. Leveraging our deep connections with local craftsmen, architects, and interior designers, we transform your ideas into reality, ensuring a design that enhances your home and complements the distinct character of your neighborhood.

4. Understanding Local Regulations
Navigating Local Regulations with Ease Building an ADU in San Diego comes with specific regulations and zoning laws, and at Buckley Builders, Inc., we have the local expertise to guide you through the process. Our team is well-versed in the intricacies of San Diego’s building landscape, ensuring that your project adheres to all necessary guidelines, making the construction process as smooth as possible.

5. Aftercare and Support
Commitment to Ongoing Support Our relationship with you doesn’t end when the project is completed. At Buckley Builders, we are dedicated to providing ongoing support and aftercare for all our clients. Whether you have questions about maintenance or need assistance with your new space, we’re here to help, ensuring that your ADU continues to meet your needs long after construction is finished.

Ready to Bring Your ADU Vision to Life?
At Buckley Builders, Inc., (Lic. # 109051) we’re here to help you every step of the way. Whether you’re dreaming of extra space for family, a rental unit, or a home office, our expert team is ready to turn your vision into reality. Book a consultation today, and let’s start planning your perfect ADU together!

CREDENTIALS

California License: Buckley Builders, Inc. holds an active general building contractor license (#1090513) with the California State Licensing Board (CSLB). This license confirms that the company meets the required standards for construction in California, including having necessary experience and maintaining insurance. For the latest details, you can check the CSLB website directly here. This status not only assures clients of compliance with regulations but also highlights Buckley Builders, Inc., commitment to quality and safety in all projects.

Better Business Bureau (BBB) Buckley Builders, Inc. (#1090513) is a proud member of the Better Business Bureau (BBB), demonstrating our commitment to maintaining high standards of integrity and customer service. Being BBB accredited reflects our dedication to resolving customer concerns and fostering trust in our community. We prioritize quality craftsmanship and open communication, ensuring that our clients feel valued and supported throughout their ADU projects. Our BBB membership is a testament to our reliability and professionalism in the construction industry. For more information, you can visit the BBB website.

With Buildertrend project management software, clients of Buckley Builders, Inc. receive a private log-in with regular photo updates, keeping them informed about their ADU's progress. This feature, combined with real-time schedule tracking, ensures homeowners can easily monitor timelines and stay engaged throughout the construction journey. Additional benefits include streamlined communication with the construction team, budget tracking, and easy access to important documents, all designed to provide a seamless experience and peace of mind.

resources

ADU Resources from the City:

San Diego County ADU Guidebook
Offers specific guidelines and insights for homeowners in San Diego County regarding ADUs.
San Diego County ADU Guidebook https://www.sandiegocounty.gov/content/dam/sdc/pds/bldg/adu_info/COSD_ADU_Handbook.pdf
Pre-Approved ADU Plans
The City of San Diego provides free, pre-approved ADU designs, helping to save time and money during the design and permitting process.
City of San Diego Pre-Approved ADU Plans https://www.sandiegocounty.gov/content/sdc/pds/bldg/adu_plans.html
Permit Application: https://www.sandiegocounty.gov/content/sdc/pds/ApplicationSummary.html
San Diego Planning & Development Services
A key resource for zoning, permit requirements, and specific questions related to your property.
Planning & Development Services https://www.sandiegocounty.gov/content/sdc/pds.html
California Housing Finance Agency ADU Resources
Offers financing options, cost estimators, and resources to help homeowners plan for the costs associated with building an ADU.
CalHFA ADU Financing https://www.calhfa.ca.gov/homeownership/adu/index.htm
San Diego Department of Environmental Health
Provides guidance on sanitation requirements, especially if your property is on a septic system.
Environmental Health Department https://www.sandiegocounty.gov/content/sdc/deh/lwqd/lu_septic_systems.html
City of San Diego Zoning Portal
A tool to find zoning information for your property and determine if you can add an ADU.
Zoning Information Portal https://www.sandiego.gov/zoning
Accessory Dwelling Unit Permitting Information
Step-by-step instructions for permitting your ADU in San Diego, including necessary forms and applications.
ADU Permitting Information https://www.sandiegocounty.gov/pds/docs/pds441a.pdf
State of California ADU Handbook
A general guide to ADU laws and regulations throughout California, regularly updated to reflect recent changes.
California ADU Handbook https://www.hcd.ca.gov/community-development/affordable-housing-developers/accessory-dwelling-units

BUILDING
ADU

CONTACT BUCKLEY BUILDERS, INC. ASK ABOUT BUILDING

AN ADU ON YOUR PROPERTY

Get A Consulation

Christopher "Buck" Buckley

BUCKLEY BUILDERS, INC.

Building Dreams That Last

BUCKLEY BUILDERS, INC.

BUILDING SAN DIEGO

ADU

Welcome to the ADU Guidebook Buckley Builders Inc.

Frequently Asked Questions

​​​

What is an ADU? An Accessory Dwelling Unit (ADU) is a secondary housing unit located on the same lot as a primary residence.

Can I build an ADU on my property? Yes, provided your property meets the zoning and building requirements for ADUs.

What types of ADUs can I build? You can build detached, attached, or converted ADUs, as well as Junior ADUs (JADUs).

Do I need a permit to build an ADU? Yes, a building permit is required for all types of ADUs.

How big can my ADU be? Detached ADUs can be up to 1,200 square feet, while attached ADUs are limited to 50% of the primary residence or 1,200 square feet, whichever is smaller.

How tall can my ADU be? The height limit for an ADU is generally 16 feet but can be up to 25 feet in specific cases.

How much will it cost to build an ADU? Costs vary based on design, size, and location. Here's a breakdown of estimated budget percentages:

Construction Costs (60-70%): This includes materials, labor, and any site preparation.

Permitting and Fees (5-10%): Building permits, impact fees, and other regulatory fees.

Design and Architecture (10-15%): Fees for architects or designers to create plans.

Utility Connections (5-10%): Costs associated with connecting to water, electricity, and sewage.

Landscaping and Exterior Work (5%): Additional costs for landscaping, driveways, and outdoor spaces.

How long does it take to get an ADU permit? The permitting process typically takes several months, depending on the project's scope and compliance with local regulations.

Can I convert my garage into an ADU? Yes, converting a garage into an ADU is allowed if it meets all building and zoning requirements.

What are the setback requirements for an ADU? ADUs generally require a minimum of four feet from the side and rear property lines.

Can I rent out my ADU? Yes, ADUs can be rented, but they must be for long-term rentals of 30 days or more.

Do I need to live on the property to have an ADU? Owner-occupancy is required for Junior ADUs, but not for standard ADUs.

Will building an ADU raise my property taxes? Only the newly built ADU will be assessed for property taxes, not the entire property.

How do utility connections work for an ADU? ADUs can either share utilities with the main house or have separate connections, depending on your preference and local regulations.

Can I sell my ADU separately from my main house? No, ADUs cannot be sold separately from the primary residence.

Are ADUs subject to fire safety regulations? Yes, ADUs must comply with local fire safety standards, including adequate fire access and distance from property lines.

Do I need additional parking for my ADU? Parking is generally not required for ADUs located near public transit or in walkable areas.

Can I use my ADU as a short-term rental? No, ADUs must be rented for periods longer than 30 days.

Do ADUs have different design requirements? Yes, ADUs must comply with local design standards, including size, height, and exterior materials.

What financing options are available for building an ADU? Homeowners can explore various financing options such as loans, grants, or special ADU programs.

Can I build more than one ADU on my property? Single-family properties can have one ADU and one Junior ADU, while multifamily properties can have up to two detached ADUs.

Can I build an ADU if my property is on a septic system? Yes, but you must consult with the Department of Environmental Health to ensure your septic system can handle the additional load.

How can I ensure my ADU complies with local regulations? Work with a knowledgeable builder and consult local zoning and building codes before starting your project.

Are there fees for ADU permits? Yes, you’ll need to pay for building permits, impact fees, and any other required assessments.

Why should I consult a professional builder before starting my ADU project? A professional builder can help navigate regulations, avoid costly mistakes, and ensure your ADU is built efficiently and to code.

Where can I find the most updated information about current ordinances on ADUs? Refer to the County's ADU and JADU Regulations handout for the latest information. San Diego County ADU and JADU Regulations https://www.sandiegocounty.gov/content/sdc/pds/bldg/adu.html

Who can I talk to for ADU-related planning questions? Contact the County Planning and Development Services Department at pdszoningpermitcounter@sdcounty.ca.gov or visit their office at 5510 Overland Ave, San Diego, CA 92123.

Can a JADU connect to the main house through a door? Yes, a JADU (Junior ADU) can connect to the main house through an interior door, as long as it meets all other building and zoning requirements.

Are solar panels required for an ADU? Yes, new ADUs in California, including San Diego County, are required to have solar panels as part of the state’s energy efficiency standards for residential buildings.

Does an ADU have to be ADA-compliant? ADUs do not have to be fully ADA-compliant unless they are specifically intended for use as a public accommodation or in certain rental situations where accessibility is required.

Is there a minimum size for an ADU? Can an ADU be tiny? Yes, the minimum size for an ADU in San Diego is 150 square feet, which can allow for a very small, "tiny" ADU, as long as it meets basic living requirements.

Is an ADU the same thing as a Tiny House? No, an ADU is a permanent structure with foundation requirements, while a Tiny House is often built on wheels and may not meet local building codes for ADUs.

Can a trailer be an ADU? No, trailers or other mobile units generally do not qualify as ADUs under San Diego County’s regulations, as ADUs must be on a permanent foundation.

How much did property values increase after adding an ADU to a house in San Diego County? Studies suggest that adding an ADU can increase property values in San Diego County by 20% to 30%, depending on factors like location and quality of construction.

​​

Recent changes to ADU regulations in San Diego help homeowners:

Streamlined Permitting: Faster approvals help you start your ADU project sooner.

Increased Flexibility: More design options allow you to create a space that fits your needs.

Lower Fees: Reduced permit costs make building an ADU more affordable. (This just expired in January 2024)

Easier Compliance: Clearer regulations simplify the compliance process for homeowners.

Affordable Housing Support: These changes encourage more housing options for the community.

Enhanced Property Value: Building an ADU can increase your property’s value and rental potential.

​​

ADU Planning Steps:

Check Eligibility: Start by reviewing your property’s zoning regulations to confirm you can build an ADU. Consider factors like lot size and neighborhood guidelines.

Explore the ADU Guidebook: Familiarize yourself with the San Diego ADU Guidebook for essential information on design standards and construction requirements.

Design Your ADU: Collaborate with a licensed architect or designer to create plans that meet local codes while maximizing your space's functionality and style.

Gather Your Documents: Compile all necessary paperwork for your permit application, including site plans and construction drawings as outlined in the guidebook.

Submit Your Application: File your building permit application with the City of San Diego’s Development Services Department, ensuring all required forms and fees are included.

Respond to Feedback: Be open to comments from city planners during the review process to keep your project on track.

Get Your Permit: Once approved, you'll receive the building permit to start construction on your new ADU.

Start Building: Choose a licensed contractor like Buckley Builders, Inc., who is well-versed in San Diego ADU regulations to ensure your project runs smoothly.

Schedule Inspections: Arrange for necessary inspections throughout the construction process to ensure compliance with building codes and safety standards.

Final Approval: Once construction is complete and all inspections pass, obtain your Certificate of Occupancy to officially enjoy your new ADU!

ADU Planning Steps:

​​ADU Permit Steps:

​​ADU Permit Steps:

​

Preliminary Review: Check zoning and building codes on the San Diego County Planning and Development Services (PDS) website

Submit Application: Complete and submit the ADU permit application via the PDS Online Portal. You may submit applications online or in person at the County Permit Center located at our County Operations Center on the 1st floor of 5510 Overland Ave, San Diego, CA 92123.

Plan Review: Your plans will undergo review by county staff for compliance.

Permit Issuance: Once approved, receive your construction permit.

Inspections: Schedule inspections through the PDS Inspections page https://www.sandiego.gov/development-services/permits-inspections

For more details, refer to the San Diego County ADU Handbook https://www.sandiegocounty.gov/content/dam/sdc/pds/advance/adu-handbook.pdf ​

​​​

ADU Building Steps Buckley Builders, Inc., (General Contractor License. # 109051) streamlines all stages of planning, permitting, and construction. Below is a simplified version of the approach recommended by the County of San Diego. 1. Decide and Prepare

Take Photos: Once you have an idea of the ADU type you want, start by capturing all angles of the available space on your property.

Make a Sketch: Create a rough layout of your lot, indicating the placement and dimensions of existing structures. Factor in important elements like septic systems or easements.

Collect Information: Retrieve a Property Summary Report and meet with County Planning and Development Services (PDS) to discuss design options, site-specific factors, and potential constraints.

Consult with a Professional: this is a great time to have a consultation with Buckley Builders, Inc. Asking questions now ,can save save money later.

BUILDING
SAN DIEGO

Welcome to
the ADU Guidebook
Buckley Builders Inc.

What is an ADU?
An Accessory Dwelling Unit (ADU) is a secondary housing unit located on the same lot as a primary residence.

Can I build an ADU on my property?
Yes, provided your property meets the zoning and building requirements for ADUs.

What types of ADUs can I build?
You can build detached, attached, or converted ADUs, as well as Junior ADUs (JADUs).

Do I need a permit to build an ADU?
Yes, a building permit is required for all types of ADUs.

How big can my ADU be?
Detached ADUs can be up to 1,200 square feet, while attached ADUs are limited to 50% of the primary residence or 1,200 square feet, whichever is smaller.

How tall can my ADU be?
The height limit for an ADU is generally 16 feet but can be up to 25 feet in specific cases.

How much will it cost to build an ADU?
Costs vary based on design, size, and location. Here's a breakdown of estimated budget percentages:

How long does it take to get an ADU permit?
The permitting process typically takes several months, depending on the project's scope and compliance with local regulations.

Can I convert my garage into an ADU?
Yes, converting a garage into an ADU is allowed if it meets all building and zoning requirements.

What are the setback requirements for an ADU?
ADUs generally require a minimum of four feet from the side and rear property lines.

Can I rent out my ADU?
Yes, ADUs can be rented, but they must be for long-term rentals of 30 days or more.

Do I need to live on the property to have an ADU?
Owner-occupancy is required for Junior ADUs, but not for standard ADUs.

Will building an ADU raise my property taxes?
Only the newly built ADU will be assessed for property taxes, not the entire property.

How do utility connections work for an ADU?
ADUs can either share utilities with the main house or have separate connections, depending on your preference and local regulations.

Can I sell my ADU separately from my main house?
No, ADUs cannot be sold separately from the primary residence.

Are ADUs subject to fire safety regulations?
Yes, ADUs must comply with local fire safety standards, including adequate fire access and distance from property lines.

Do I need additional parking for my ADU?
Parking is generally not required for ADUs located near public transit or in walkable areas.

Can I use my ADU as a short-term rental?
No, ADUs must be rented for periods longer than 30 days.

Do ADUs have different design requirements?
Yes, ADUs must comply with local design standards, including size, height, and exterior materials.

What financing options are available for building an ADU?
Homeowners can explore various financing options such as loans, grants, or special ADU programs.

Can I build more than one ADU on my property?
Single-family properties can have one ADU and one Junior ADU, while multifamily properties can have up to two detached ADUs.

Can I build an ADU if my property is on a septic system?
Yes, but you must consult with the Department of Environmental Health to ensure your septic system can handle the additional load.

How can I ensure my ADU complies with local regulations?
Work with a knowledgeable builder and consult local zoning and building codes before starting your project.

Are there fees for ADU permits?
Yes, you’ll need to pay for building permits, impact fees, and any other required assessments.

Why should I consult a professional builder before starting my ADU project?
A professional builder can help navigate regulations, avoid costly mistakes, and ensure your ADU is built efficiently and to code.

Where can I find the most updated information about current ordinances on ADUs?
Refer to the County's ADU and JADU Regulations handout for the latest information. San Diego County ADU and JADU Regulations https://www.sandiegocounty.gov/content/sdc/pds/bldg/adu.html

Who can I talk to for ADU-related planning questions?
Contact the County Planning and Development Services Department at pdszoningpermitcounter@sdcounty.ca.gov or visit their office at 5510 Overland Ave, San Diego, CA 92123.

Can a JADU connect to the main house through a door?
Yes, a JADU (Junior ADU) can connect to the main house through an interior door, as long as it meets all other building and zoning requirements.

Are solar panels required for an ADU?
Yes, new ADUs in California, including San Diego County, are required to have solar panels as part of the state’s energy efficiency standards for residential buildings.

Does an ADU have to be ADA-compliant?
ADUs do not have to be fully ADA-compliant unless they are specifically intended for use as a public accommodation or in certain rental situations where accessibility is required.

Is there a minimum size for an ADU? Can an ADU be tiny?
Yes, the minimum size for an ADU in San Diego is 150 square feet, which can allow for a very small, "tiny" ADU, as long as it meets basic living requirements.

Is an ADU the same thing as a Tiny House?
No, an ADU is a permanent structure with foundation requirements, while a Tiny House is often built on wheels and may not meet local building codes for ADUs.

Can a trailer be an ADU?
No, trailers or other mobile units generally do not qualify as ADUs under San Diego County’s regulations, as ADUs must be on a permanent foundation.

How much did property values increase after adding an ADU to a house in San Diego County?
Studies suggest that adding an ADU can increase property values in San Diego County by 20% to 30%, depending on factors like location and quality of construction.

ADU Permit Steps:

ADU Permit Steps:

For more details, refer to the San Diego County ADU Handbook https://www.sandiegocounty.gov/content/dam/sdc/pds/advance/adu-handbook.pdf

ADU Building Steps

Buckley Builders, Inc., (General Contractor License. # 109051) streamlines all stages of planning, permitting, and construction. Below is a simplified version of the approach recommended by the County of San Diego.

1. Decide and Prepare

Overall, building an ADU can be a smart investment that meets both personal and community needs.

Frequently Asked Questions (FAQ)

Costs

Licensing

ASK
ANY
QUESTION

Consult with Buckley Builders

Our experienced team is committed to supporting you in navigating local regulations and ensuring your ADU meets your needs. We offer:

With Buckley Builders, Inc., your dream ADU can become a reality! Let’s work together to create a functional space that enhances your property and aligns with your vision. Get a quote.