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ADU Builders in Santa Ana, CA

97 builders ยท ranked by Google rating and review volume ยท 45 CSLB license verified

โ˜… Featured ADU builder

Featured ADU builder โ€” this spot is open

Put your ADU company at the top of this page, in front of Santa Ana 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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Santa Ana is home to about 310,227 people (2020 Census) in Orange County. We found 97 ADU builders and contractors that show up for Santa Ana homeowners on Google Maps, 12 of them based in the city itself. Their average Google rating is 4.9 stars. 36 market themselves specifically as ADU builders, and 4 mention garage conversions. 45 have a matched, active CSLB license shown with a verified badge. The top-rated by our review-weighted score are Primework Construction, John Christopher Construction, Inc. and Ivy Builders Remodeling.

In Orange County, HOA and design-standard questions come up often. State law voids CC&Rs that ban ADUs, but HOAs can still apply reasonable objective standards. Compact lots make attached units and garage conversions popular.

#8

Serhal Builders

5.0 (30 Google reviews)
โœ” CSLB License Verified #1074208

1328 E Orangethorpe Ave, Fullerton, CA 92831

Serves Santa Ana ยท based in Fullerton
Remodels & additionsGeneral contractor
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#9

Modernyze

5.0 (26 Google reviews)
โœ” CSLB License Verified #1019812

2323 Main St, Irvine, CA 92614

Serves Santa Ana ยท based in Irvine
Remodels & additionsHome builderGeneral contractor
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#10

Look Wow Builders

5.0 (24 Google reviews)
โœ” CSLB License Verified #1121005

1600 Dove St Ste 260, Newport Beach, CA 92660

Serves Santa Ana ยท based in Newport Beach
Remodels & additionsHome builderGeneral contractor
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#18

Vulcon Builders

5.0 (18 Google reviews)
โœ” CSLB License Verified #1128480

2082 Michelson Dr #100, Irvine, CA 92612

Serves Santa Ana ยท based in Irvine
Remodels & additionsHome builderGeneral contractor
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#20

OC Quality Builders

4.9 (30 Google reviews)
โœ” CSLB License Verified #1148925

22981 Triton Way Unit C, Laguna Hills, CA 92653

Serves Santa Ana ยท based in Laguna Hills
Remodels & additionsHome builderGeneral contractor
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#21

Builpire

4.9 (28 Google reviews)
โœ” CSLB License Verified #1052330

1427 E Borchard Ave, Santa Ana, CA 92705

Based in Santa Ana
Remodels & additionsGeneral contractor
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#22

Vision ADU

5.0 (14 Google reviews)
โœ” CSLB License Verified #1115842

1440 S State College Blvd #6h, Anaheim, CA 92806

Serves Santa Ana ยท based in Anaheim
ADU specialist
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#35

VICOREL

5.0 (9 Google reviews)
โœ” CSLB License Verified #1143460

2372 Morse Ave Ste 746, Irvine, CA 92614

Serves Santa Ana ยท based in Irvine
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#41

Seib Construction

4.8 (17 Google reviews)
โœ” CSLB License Verified #891787

1464 N Batavia St, Orange, CA 92867

Serves Santa Ana ยท based in Orange
Remodels & additionsGeneral contractor
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#49

ADUscale

5.0 (4 Google reviews)

528 W Hampshire Ave, Anaheim, CA 92805

Serves Santa Ana ยท based in Anaheim
ADU specialistHome builder
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#50

Dv construction

5.0 (4 Google reviews)
โœ” CSLB License Verified #1116638

10055 Lampson Ave, Garden Grove, CA 92840

Serves Santa Ana ยท based in Garden Grove
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#51

Tech LA Builder

5.0 (4 Google reviews)
โœ” CSLB License Verified #1097275

20381 Lake Forest Dr, Lake Forest, CA 92630

Serves Santa Ana ยท based in Lake Forest
General contractor
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#62

Pelican ADU Builders

5.0 (2 Google reviews)
โœ” CSLB License Verified #1106515

1924 Barranca Pkwy Unit 1, Irvine, CA 92606

Serves Santa Ana ยท based in Irvine
ADU specialistGeneral contractor
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#65

Stone Development Inc

5.0 (2 Google reviews)
โœ” CSLB License Verified #1146382

1 Jenner Ste 150, Irvine, CA 92618

Serves Santa Ana ยท based in Irvine
Remodels & additionsHome builderGeneral contractor
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#67

White Lotus Homes

5.0 (2 Google reviews)
โœ” CSLB License Verified #1124683

650 Town Center Dr #1670, Costa Mesa, CA 92626

Serves Santa Ana ยท based in Costa Mesa
Home builder
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#69

KoBolt Construction

4.6 (11 Google reviews)
โœ” CSLB License Verified #1024785

406 E Commonwealth Ave #3, Fullerton, CA 92832

Serves Santa Ana ยท based in Fullerton
Remodels & additionsHome builderGeneral contractor
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#70

USA Builders

5.0 (1 Google reviews)

Service-area business ยท Tustin

Serves Santa Ana ยท based in Tustin
Remodels & additionsHome builderGeneral contractor
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#71

DWELLO ADU INC

5.0 (1 Google reviews)

23361 Madero Ste 235, Mission Viejo, CA 92691

Serves Santa Ana ยท based in Mission Viejo
ADU specialistGeneral contractor
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#72

FNCC Construction

5.0 (1 Google reviews)

230 N Crescent Way Unit g, Anaheim, CA 92801

Serves Santa Ana ยท based in Anaheim
Remodels & additionsGeneral contractor
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#74

Epic Remodeling

4.5 (16 Google reviews)
โœ” CSLB License Verified #1095347

17801 Main St, Irvine, CA 92614

Serves Santa Ana ยท based in Irvine
Remodels & additions
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#83

Skye Construction

No rating yet (0 Google reviews)
โœ” CSLB License Verified #1068435

1302 E Hunter Ave #C, Santa Ana, CA 92705

Based in Santa Ana
General contractor
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#84

Orange Innovation

No rating yet (0 Google reviews)
โœ” CSLB License Verified #832810

15122 Starboard St, Garden Grove, CA 92843

Serves Santa Ana ยท based in Garden Grove
General contractor
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#86

J&R ADU

No rating yet (0 Google reviews)

Service-area business ยท Fountain Valley

Serves Santa Ana ยท based in Fountain Valley
ADU specialistPrefab / modularHome builder
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#89

ADU-BUILDS

No rating yet (0 Google reviews)
โœ” CSLB License Verified #1150636

Service-area business ยท Newport Beach

Serves Santa Ana ยท based in Newport Beach
ADU specialist
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#93

OCADUSTUDIO

No rating yet (0 Google reviews)
โœ” CSLB License Verified #1155045

13251 Pinto Rd, Garden Grove, CA 92843

Serves Santa Ana ยท based in Garden Grove
ADU specialistGeneral contractor
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#94

Shore-Tech Builders LLC

No rating yet (0 Google reviews)
โœ” CSLB License Verified #856735

8111 Wadebridge Cir, Huntington Beach, CA 92646

Serves Santa Ana ยท based in Huntington Beach
Remodels & additionsHome builder
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Permits and pre-approved plans in Santa Ana

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

Planning an ADU in Santa Ana? Start here

Garage Conversion ADU Cost in Southern California (and What Drives It)The ADU Permit Process in California: Step by Step (2026)How Long Does It Take to Build an ADU in Southern California?How to Choose an ADU Builder in Southern California: 15-Point Checklist

All ADU guides โ†’

Santa Ana ADU FAQ

How many ADU builders serve Santa Ana?

Our directory lists 97 ADU builders and contractors that appear for Santa Ana on Google Maps, including companies based in nearby Orange County communities.

Do I need a permit to build an ADU in Santa Ana?

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

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 Santa Ana 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 Orange County

Anaheim 114Irvine 107Huntington Beach 88Garden Grove 97Fullerton 23Orange 95Costa Mesa 103Mission Viejo 59Westminster 53Lake Forest 60Newport Beach 96Buena Park 52
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