ADU Builders San Diego
The City of San Diego ADU Guide
San Diego, CA, USA
You’ve found the ultimate resource for building a granny flat in San Diego, California. Whether you’re a homeowner looking to maximize flexibility for family or an investor planning to add units, our comprehensive guide is here to assist you every step of the way.
Also known as accessory dwelling units (ADU), granny flats, casitas, and in-law suites are easier and cheaper to build, with no minimum lot sizes or side and rear setbacks.
Read on for more on what you can build in San Diego, rent rates, and to see completed & active ADU projects we are building in the City of San Diego. You can also access detailed ADU cost & floor plan information, plus check out homeowner stories.

San Diego ADU QUICK FACTS
What you can build
Maximum size: 1200 square feet
Side/rear setbacks: 0 feet (4 feet preferred and for two-story)
Two story: Yes
Permitting timeline
Standard: 3-5 months
Coastal: 5-7 months
Our ADU experience in San Diego
SnapADU is a leader in the San Diego ADU market, with a portfolio that includes dozens of completed and ongoing granny flat projects. Our team’s in-depth knowledge of the city’s ADU regulations and our established relationships with local permitting offices streamline the process for our clients. We’re committed to leveraging our experience to navigate the complexities of each project, from initial design to final construction, ensuring that every ADU we build meets the unique needs of homeowners while complying with local guidelines.
Of note, San Diego promotes the building of more ADUs through the affordable ADU bonus program.
San Diego ADU Regulations & Permitting Requirements
Want to learn more about what kind of ADU you can build in San Diego? Check out our in-depth resource guide San Diego Regulations & Permitting Requirements outlining the ADU building code requirements. We also include what we have learned about how the city will interpret code based on actually designing & building in the city. You can also set up a consult if you want our advice on what you can build.How long does it take to get a permit for an ADU in San Diego?
Obtaining a permit for an ADU in the City of San Diego typically takes 3-5 months, thanks to improvements in the city’s review and approval process. This is a significant decrease from the previous average of 8-10 months at the height of their staffing shortage in 2022 and early 2023.
Projects located within the coastal zone or those applying under the Affordable ADU Bonus Program may experience longer timelines due to additional regulatory reviews and requirements. Our team at SnapADU works diligently to anticipate and mitigate these potential delays, ensuring a smooth and timely permitting process for our clients.
How much will an ADU rent for in San Diego?
Below are median rental prices by zip code and bedroom count. Be sure to run comps for your specific area or check with a realtor.
RENT RATES IN SAN DIEGO
Zip | City | Neighborhood | 1BR | 2BR | 3BR |
92102 | San Diego | Golden Hill | 2225 | 2800 | 4325 |
92103 | San Diego | Hillcrest | 2400 | 3700 | 4475 |
92104 | San Diego | North Park | 2425 | 3075 | 3450 |
92105 | San Diego | City Heights | 1975 | 2800 | 3450 |
92106 | San Diego | Point Loma | 2725 | 3475 | 4425 |
92107 | San Diego | Ocean Beach | 2425 | 3400 | 4725 |
92109 | San Diego | Pacific Beach | 2700 | 3550 | 5025 |
92110 | San Diego | Old Town | 2300 | 3575 | 4550 |
92111 | San Diego | Linda Vista | 2550 | 3225 | 4100 |
92113 | San Diego | Logan Heights | 1900 | 2525 | 3200 |
92114 | San Diego | Encanto | 1900 | 2450 | 3025 |
92115 | San Diego | College Grove | 1900 | 2725 | 3750 |
92116 | San Diego | Normal Heights | 2200 | 3025 | 4425 |
92117 | San Diego | Clairemont | 2200 | 2875 | 3750 |
92119 | San Diego | San Carlos | 2100 | 2675 | 3425 |
92120 | San Diego | Grantville | 1975 | 2950 | 3800 |
92121 | San Diego | Sorrento Valley | 2500 | 3475 | 4300 |
92122 | San Diego | University City | 2475 | 3375 | 4700 |
92123 | San Diego | Serra Mesa | 2550 | 3325 | 4250 |
92124 | San Diego | Tierrasanta | 2275 | 3150 | 3975 |
92126 | San Diego | Mira Mesa | 2400 | 3050 | 3925 |
92127 | San Diego | Rancho Bernardo | 2350 | 2850 | 3900 |
92128 | San Diego | Rancho Bernardo | 2225 | 2925 | 3800 |
92129 | San Diego | Rancho Bernardo | 2025 | 2900 | 3800 |
92130 | San Diego | Carmel Valley | 2775 | 3725 | 4125 |
92131 | San Diego | Scripps Ranch | 2500 | 3000 | 4150 |
92139 | San Diego | Paradise Hills | 2000 | 2700 | 3350 |
Source: Rentometer March 2024
How do I get my USPS address for my ADU in San Diego?
San Diego’s approach to ADU address assignment involves more direct involvement from the homeowner compared to other cities. Read more in our Guide to ADU Addresses.
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ADU Builders in San Diego

Full Accountability. ADU Expertise. Proven Results.
Our own team is responsible for delivering on our promises, from the first time you contact us to the time we hand you the keys to your new ADU home.
As experienced ADU builders, we will anticipate the pitfalls that less seasoned or less integrated teams will miss. And the volume of ADU jobs we handle means we have gained an incredible amount of expertise that we are excited to bring to your project.
We’re 100% focused on being the best ADU builders in San Diego.
Zip Codes: 92101, 92102, 92103, 92104, 92105, 92106, 92107, 92108, 92109, 92110, 92111, 92113, 92114, 92115, 92116, 92117, 92119, 92120, 92121, 92123, 92124, 92126, 92127, 92128, 92129, 92130, 92131, 92139, 92140, 92145, 92147
Neighborhoods: Black Mountain Ranch, Carmel Valley, City Heights, Clairemont, College Grove, Encanto, Grantville, Hillcrest, Kearny Mesa, La Jolla, Linda Vista, Logan Heights, Mira Mesa, Mission Valley, Navajo, Normal Heights, North Park, Ocean Beach, Old Town, Pacific Beach, Pacific Highlands Ranch, Paradise Hills, Point Loma, Rancho Bernardo, Rancho Penasquitos, Sabre Springs, Scripps Ranch, Serra Mesa, Sorrento Valley, Tierrasanta, Torrey Hills, University City
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Bring aging parents closer
Build an ADU to comfortably bring aging relatives closer.
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Create flex space for work/hobby
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Generate rental income
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ADU Builders San Diego
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ADU Builders San Diego
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ADU Builders San Diego
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I think it’s really great to have a company that does basically the whole process from start to finish, and it really takes out a lot of the stress that comes with construction.
Mylinh Arnett
Homeowner, San Diego -
SnapADU’s customer service was amazing. Bob talked to me like I was his own daughter, giving me honest advice on the whole process. I’ve already recommended SnapADU to many people.
Corey Roan
Homeowner, San Diego -
SnapADU’s project management was incredible. I don’t live in the area, and all I had to do was write the checks – they handled everything from start to finish.
Malka Nagel
Homeowner, San Diego