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ADU Builders in Imperial Beach, CA

13 builders · ranked by Google rating and review volume · 5 CSLB license verified

★ Featured ADU builder

Featured ADU builder — this spot is open

Put your ADU company at the top of this page, in front of Imperial Beach homeowners who are comparing builders right now. Includes your logo, project photos, a direct call button and a link to your website.

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Located in San Diego County, Imperial Beach had a 2020 Census population of about 26,137. We found 13 ADU builders and contractors that show up for Imperial Beach homeowners on Google Maps, most of them based in nearby communities. Their average Google rating is 4.8 stars. 4 market themselves specifically as ADU builders, and 1 mention garage conversions. 5 have a matched, active CSLB license shown with a verified badge. The top-rated by our review-weighted score are Fausto Construction Inc., Goncon Design & Build and ADUs & Garage Conversions | Sprawl Design.

San Diego was an early ADU adopter. Coastal-zone lots may need a coastal development permit, which state law now requires within 60 days, and transit-area lots often qualify for the 18-foot detached height allowance.

#1

Fausto Construction Inc.

5.0 (256 Google reviews)
✔ CSLB License Verified #1112999

1223 3rd Ave Ste e, Chula Vista, CA 91911

Serves Imperial Beach · based in Chula Vista
Remodels & additionsGeneral contractor
CallWebsiteView profile
#2

Goncon Design & Build

5.0 (31 Google reviews)
✔ CSLB License Verified #1003038

995 Bay Blvd #102, Chula Vista, CA 91911

Serves Imperial Beach · based in Chula Vista
Design-buildRemodels & additionsHome builderGeneral contractor
CallWebsiteView profile
#8

HHRemodelinSD

5.0 (4 Google reviews)

547 Glover Ave, Chula Vista, CA 91910

Serves Imperial Beach · based in Chula Vista
Remodels & additionsGeneral contractor
WebsiteView profile
#13

Just ADUs

No rating yet (0 Google reviews)

979 Palm Valley Cir Unit D, Chula Vista, CA 91915

Serves Imperial Beach · based in Chula Vista
ADU specialist
CallWebsiteView profile

Permits and pre-approved plans in Imperial Beach

ADU permits in Imperial Beach go through the city's building or planning department. Under AB 1332, every California city and county had to set up a pre-approved ADU plan program by January 1, 2025, so ask Imperial Beach whether it has approved plans you can use. See our pre-approved plans guide and California ADU law summary.

Planning an ADU in Imperial Beach? Start here

Two-Story and Above-Garage ADUs in California: Height Rules, Costs and DesignThe ADU Permit Process in California: Step by Step (2026)How Much Does It Cost to Build an ADU in Southern California?ADU Rental Income and Property Taxes in California: What to Expect

All ADU guides →

Imperial Beach ADU FAQ

How many ADU builders serve Imperial Beach?

Our directory lists 13 ADU builders and contractors that appear for Imperial Beach on Google Maps, including companies based in nearby San Diego County communities.

Do I need a permit to build an ADU in Imperial Beach?

Yes. ADUs need a building permit from the City of Imperial Beach, which must approve or deny a complete application within 60 days under state law. Many cities also offer pre-approved plans that speed up review.

How much does an ADU cost in Imperial Beach?

Most Southern California detached ADUs land around $350 to $550 per square foot all-in, garage conversions around $200 to $350, and JADUs around $50,000 to $150,000. Use our ADU cost estimator and get three itemized bids.

How are Imperial Beach ADU builders ranked here?

By Google rating weighted by the number of reviews, so a 4.9 with 200 reviews ranks above a 5.0 with 3. Featured placements are clearly labeled and don't affect the organic ranking.

Nearby cities in San Diego County

San Diego 120Chula Vista 86Oceanside 56Escondido 110Carlsbad 67El Cajon 22Vista 60San Marcos 66Encinitas 64La Mesa 41Santee 67National City 99
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