Moussa Construction & Engineering
5.0 (12 Google reviews)
14241 Firestone Blvd, La Mirada, CA 90638
Based in La MiradaADU Builders in La Mirada, CA
11 builders · ranked by Google rating and review volume · 4 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 La Mirada 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, La Mirada had a 2020 Census population of about 48,008. We found 11 ADU builders and contractors that show up for La Mirada homeowners on Google Maps, 1 of them based in the city itself. Their average Google rating is 4.7 stars. 9 market themselves specifically as ADU builders, and 1 mention garage conversions. 4 have a matched, active CSLB license shown with a verified badge. The top-rated by our review-weighted score are Moussa Construction & Engineering, Fullerton ADU Builder and ADU Designers & Builders.
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.
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Fullerton ADU Builder
5.0 (9 Google reviews)
125 N Euclid St, Fullerton, CA 92832
Serves La Mirada · based in FullertonADU specialistHome builder
ADU Designers & Builders
5.0 (9 Google reviews)
2461 E Orangethorpe Ave #231, Fullerton, CA 92831
Serves La Mirada · based in FullertonADU specialistDesign-build
XactBuilt ADU & Construction
5.0 (4 Google reviews)
✔ CSLB License Verified #109283211721 Whittier Blvd suite 170, Whittier, CA 90601
Serves La Mirada · based in WhittierADU specialistRemodels & additionsHome builderGeneral contractor
Peak ADU Solutions
5.0 (3 Google reviews)
940 E Orangethorpe Ave, Anaheim, CA 92801
Serves La Mirada · based in AnaheimADU specialistHome builder
Custom ADU Builder
5.0 (2 Google reviews)
✔ CSLB License Verified #1101360113 W Santa Fe Ave, Fullerton, CA 92832
Serves La Mirada · based in FullertonADU specialist
ADU Contractor & Garage Conversion
5.0 (2 Google reviews)
5440 Beach Blvd B, Buena Park, CA 90621
Serves La Mirada · based in Buena ParkADU specialistGarage conversionsHome builder
KoBolt Construction
4.6 (11 Google reviews)
✔ CSLB License Verified #1024785406 E Commonwealth Ave #3, Fullerton, CA 92832
Serves La Mirada · based in FullertonRemodels & additionsHome builderGeneral contractor
Apex Construction
3.7 (6 Google reviews)
✔ CSLB License Verified #1020301Service-area business · La Habra
Serves La Mirada · based in La HabraADU specialistRemodels & additionsGeneral contractor
Abundance Design Construction Remodeling | 리모델링 ADU 솔라
3.5 (8 Google reviews)
6904 Oran Cir, Buena Park, CA 90621
Serves La Mirada · based in Buena ParkADU specialistRemodels & additions
Buena Park ADU
No rating yet (0 Google reviews)
6925 Aragon Cir, Buena Park, CA 90620
Serves La Mirada · based in Buena ParkADU specialistHome builder
Permits and pre-approved plans in La Mirada
ADU permits in La Mirada 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 La Mirada whether it has approved plans you can use. See our pre-approved plans guide and California ADU law summary.
Planning an ADU in La Mirada? Start here
La Mirada ADU FAQ
How many ADU builders serve La Mirada?
Our directory lists 11 ADU builders and contractors that appear for La Mirada on Google Maps, including companies based in nearby Los Angeles County communities.
Do I need a permit to build an ADU in La Mirada?
Yes. ADUs need a building permit from the City of La Mirada, 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 La Mirada?
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 La Mirada 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.