Ethos Building Group LLC
5.0 (15 Google reviews)
✔ CSLB License Verified #1152661Service-area business · Lomita
Serves Lomita · based in LomitaRemodels & additionsHome builderGeneral contractor
ADU Builders in Lomita, CA
9 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 Lomita homeowners who are comparing builders right now. Includes your logo, project photos, a direct call button and a link to your website.
Located in Los Angeles County, Lomita had a 2020 Census population of about 20,921. We found 9 ADU builders and contractors that show up for Lomita homeowners on Google Maps, 1 of them based in the city itself. Their average Google rating is 4.7 stars. 3 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 Ethos Building Group LLC, Bay Cities Construction and Aztec's Construction.
Los Angeles leads California in ADU permits. Common projects here include garage conversions on older lots, detached backyard units on deep lots, and hillside sites where access and grading drive the cost.
No builders match that filter here yet. Try another one.
Bay Cities Construction
5.0 (10 Google reviews)
✔ CSLB License Verified #84261422760 Hawthorne Blvd #230, Torrance, CA 90505
Serves Lomita · based in TorranceRemodels & additionsGeneral contractor
Aztec's Construction
5.0 (5 Google reviews)
✔ CSLB License Verified #1055405Service-area business · Rancho Palos Verdes
Serves Lomita · based in Rancho Palos VerdesHome builder
ADU Garage Conversion Palos Verdes
5.0 (5 Google reviews)
Service-area business · Lomita
Serves Lomita · based in LomitaADU specialistGarage conversionsGeneral contractor
Hurst Construction
5.0 (5 Google reviews)
✔ CSLB License Verified #96131325110 Narbonne Ave, Lomita, CA 90717
Based in LomitaGeneral contractor
The ADU Guys
3.4 (5 Google reviews)
✔ CSLB License Verified #107144223601 Avalon Blvd #203, Carson, CA 90745
Serves Lomita · based in CarsonADU specialist
Torrance ADU Builder
No rating yet (0 Google reviews)
2510 W 237th St Unit 204, Torrance, CA 90505
Serves Lomita · based in TorranceADU specialistHome builder
Open Hand Remodeling Co.
No rating yet (0 Google reviews)
3220 Sepulveda Blvd #104, Torrance, CA 90505
Serves Lomita · based in TorranceRemodels & additionsGeneral contractor
Randy's Home Design
No rating yet (0 Google reviews)
21800 Main St, Carson, CA 90745
Serves Lomita · based in CarsonPermits and pre-approved plans in Lomita
ADU permits in Lomita 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 Lomita whether it has approved plans you can use. See our pre-approved plans guide and California ADU law summary.
Planning an ADU in Lomita? Start here
Lomita ADU FAQ
How many ADU builders serve Lomita?
Our directory lists 9 ADU builders and contractors that appear for Lomita on Google Maps, including companies based in nearby Los Angeles County communities.
Do I need a permit to build an ADU in Lomita?
Yes. ADUs need a building permit from the City of Lomita, 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 Lomita?
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 Lomita 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.