ADU Builders Oceanside

The Oceanside ADU Guide

Oceanside, CA, USA

You’ve found the ultimate resource for building an accessory dwelling unit in Oceanside, 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 Oceanside, rent rates, and to see completed & active ADU projects we are building in Oceanside. You can also access detailed ADU cost & floor plan information, plus check out homeowner stories.


What you can build

Maximum size: 1200 square feet

Side/rear setbacks: 4 feet

Two story: Yes

Permitting timeline

Standard: 3-4 months

Coastal: 3-4 months

Our ADU experience in Oceanside

With SnapADU originally based in Oceanside, we know the city’s regulations and processes very well. Turnaround times at the city are faster than other nearby cities and we frequently obtain a permit within two rounds of review at the city. However, Oceanside ADU regulations are a bit more restrictive than some areas, for instance permitting 4′ setbacks for up to a 1000sqft unit; 1200sqft and two story ADUs are allowed but subject to setbacks for the underlying zone. Some of Oceanside is in the coastal zone and minor use permits are required in those areas, but may be processed in parallel with the building permit (so delays are minimal).

Oceanside ADU Regulations & Permitting Requirements

Want to learn more about what kind of ADU you can build in Oceanside? Check out our in-depth resource guide Oceanside 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.
Oceanside ADU Regulations

How much will an ADU rent for in Oceanside?

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.

92054OceansideFire Mountain240036754475
92056OceansideTri City220028003425
92057OceansideNorth Valley210026753375
92058OceansideLoma Alta240028003450

Source: Rentometer March 2024

Why do homeowners in Oceanside build accessory dwelling units?

  • Generate rental income

    Many homeowners add ADUs to create a new stream of rental income.

    Learn More
  • Bring aging parents closer
  • Downsize and rent main house
  • ADU Builders Oceanside
  • ADU Builders Oceanside
  • ADU Builders Oceanside
  • 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
    See the full story & ADU
  • 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
    See the full story & ADU
  • I decided to build an ADU because the property was a double wide lot. I'm a half mile from the beach and could see the view from the top of my house and thought, I have to take advantage of that.

    Zeno Rausa
    Homeowner, Oceanside
    See the full story & ADU

ADU Builders in Oceanside

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 Oceanside


Zip Codes: 92054, 92056, 92057, 92058

Neighborhoods: Fire Mountain, Ivey Ranch, Rancho Del Oro, Mission Mesa, East Side, Capistrano, Guajome, Mira Costa, Morro Hills, North Valley, Ocean Hills, San Luis Rey, South Oceanside, Loma Alta, Seaside