ADU Builders El Cajon
The El Cajon ADU Guide
El Cajon, CA, USA
You’ve found the ultimate resource for building an accessory dwelling unit in El Cajon, 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. Read on for more on what you can build in El Cajon, rent rates, and to see completed & active projects we are building in El Cajon. You can also access detailed ADU cost & floor plan information, plus check out homeowner stories.

El Cajon ADU QUICK FACTS
What you can build
Maximum size: 1,200 square feet
Side/rear setbacks: 4 feet
Two story: Yes
Permitting timeline
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Standard Timeline: 5-6 months
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Coastal: N/A
Our ADU experience in El Cajon
El Cajon just updated their municipal code to comply with the new state laws, and our summary below assumes those changes in effect. El Cajon allows for digital submissions with a clear tracking system. Turnaround times at the city are moderate.
El Cajon ADU Regulations & Permitting Requirements
Want to learn more about what kind of ADU you can build in El Cajon? Check out our in-depth resource guide El Cajon 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 much will an ADU rent for in El Cajon?
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 EL CAJON
Zip | City | Neighborhood | 1BR | 2BR | 3BR |
92020 | El Cajon | Grossmont | 1975 | 2650 | 3350 |
Source: Rentometer March 2024
Zip Codes: 92019, 92020, 92021, 92022, 92119
Neighborhoods: Fletcher Hills, Cajon Heights, Rolando Village, Granite Hills
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ADU Builders El Cajon

Full Accountability. ADU Expertise. Proven Results.
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 El Cajon.
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Generate rental income
Many homeowners add ADUs to create a new stream of rental income.
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Bring aging parents closer
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ADU Builders El Cajon
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ADU Builders El Cajon
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We were looking at ways to invest our money. My wife and I thought, why don't we build an ADU for rental income? Also, someday we can move into it. So it has multiple purposes.
Paul & Myra Winter
Homeowners, Oceanside -
When we bought our house, Kristen was pregnant and we wanted Grandma to be around to help with the baby. And then ultimately, we wanted to be around for Mom when she gets older.
The Heards
Homeowners, Oceanside