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ADU Builders in Oxnard, CA

31 builders · ranked by Google rating and review volume · 14 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 Oxnard 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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With roughly 202,063 residents at the 2020 Census, Oxnard is one of Ventura County's largest communities. We found 31 ADU builders and contractors that show up for Oxnard homeowners on Google Maps, 6 of them based in the city itself. Their average Google rating is 4.9 stars. 15 market themselves specifically as ADU builders. 14 have a matched, active CSLB license shown with a verified badge. The top-rated by our review-weighted score are Moorpark General Contractor Home Remodeling Kitchen Bathroom Remodeling ADU Builder Silver Stone, Oxnard General Contractor Home Remodeling Kitchen & Bathroom Remodeling ADU Builder Silver Stone and Empire Builders.

Ventura County mixes coastal and inland communities. Coastal parcels may need a coastal permit, and fire-hazard zones can add requirements for siting and materials.

#3

Empire Builders

5.0 (22 Google reviews)
✔ CSLB License Verified #1066918

2290 Eastman Ave #112, Ventura, CA 93003

Serves Oxnard · based in Ventura
Remodels & additionsGeneral contractor
CallWebsiteView profile
#4

All Pro Construction

5.0 (19 Google reviews)
✔ CSLB License Verified #956015

330 N Lantana St Ste 28 #170, Camarillo, CA 93010

Serves Oxnard · based in Camarillo
Remodels & additionsHome builderGeneral contractor
CallWebsiteView profile
#8

Aurea Construction

5.0 (14 Google reviews)
✔ CSLB License Verified #1012091

516 Pennsfield Pl #100, Thousand Oaks, CA 91360

Serves Oxnard · based in Thousand Oaks
Remodels & additionsHome builder
CallWebsiteView profile
#14

Hive ADU

5.0 (4 Google reviews)
✔ CSLB License Verified #1146801

Service-area business · Camarillo

Serves Oxnard · based in Camarillo
ADU specialistHome builderGeneral contractor
CallWebsiteView profile
#18

Lux Custom Homes

5.0 (3 Google reviews)
✔ CSLB License Verified #1142507

Service-area business · Camarillo

Serves Oxnard · based in Camarillo
Home builderGeneral contractor
CallWebsiteView profile
#20

Ventura ADU Specialists

4.6 (10 Google reviews)
✔ CSLB License Verified #1037017

2734 Johnson Dr Ste 203, Ventura, CA 93003

Serves Oxnard · based in Ventura
ADU specialistRemodels & additionsGeneral contractor
CallWebsiteView profile
#26

Perfect ADU and Remodeling inc

No rating yet (0 Google reviews)
✔ CSLB License Verified #1123657

1601 Carmen Dr #215d, Camarillo, CA 93010

Serves Oxnard · based in Camarillo
ADU specialistRemodels & additionsHome builder
CallView profile
#27

ADU Pros LA

No rating yet (0 Google reviews)

Service-area business · Camarillo

Serves Oxnard · based in Camarillo
ADU specialistHome builder
CallView profile
#30

United Construction

No rating yet (0 Google reviews)
✔ CSLB License Verified #1025573

161 W Stroube St, Oxnard, CA 93036

Based in Oxnard
Remodels & additionsGeneral contractor
CallView profile

Permits and pre-approved plans in Oxnard

ADU permits in Oxnard 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 Oxnard whether it has approved plans you can use. See our pre-approved plans guide and California ADU law summary.

Planning an ADU in Oxnard? Start here

The ADU Permit Process in California: Step by Step (2026)ADU Rental Income and Property Taxes in California: What to ExpectGarage Conversion ADU Cost in Southern California (and What Drives It)How Much Does It Cost to Build an ADU in Southern California?

All ADU guides →

Oxnard ADU FAQ

How many ADU builders serve Oxnard?

Our directory lists 31 ADU builders and contractors that appear for Oxnard on Google Maps, including companies based in nearby Ventura County communities.

Do I need a permit to build an ADU in Oxnard?

Yes. ADUs need a building permit from the City of Oxnard, 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 Oxnard?

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 Oxnard 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 Ventura County

Thousand Oaks 122Simi Valley 100Ventura 26Camarillo 48Moorpark 8Santa Paula 5Port Hueneme 5
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