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ADU Builders in Irvine, CA

107 builders ยท ranked by Google rating and review volume ยท 44 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 Irvine 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 307,670 residents at the 2020 Census, Irvine is one of Orange County's largest communities. We found 107 ADU builders and contractors that show up for Irvine homeowners on Google Maps, 22 of them based in the city itself. Their average Google rating is 4.9 stars. 51 market themselves specifically as ADU builders, and 8 mention garage conversions. 44 have a matched, active CSLB license shown with a verified badge. The top-rated by our review-weighted score are John Christopher Construction, Inc., Ivy Builders Remodeling and DYM Builders Group.

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.

#4

OC Builders Group

5.0 (76 Google reviews)
โœ” CSLB License Verified #1052090

600 W Santa Ana Blvd Ste 114-499, Santa Ana, CA 92701

Serves Irvine ยท based in Santa Ana
General contractor
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#7

Builderwell Design & Build

5.0 (61 Google reviews)
โœ” CSLB License Verified #1022234

220 Newport Center Dr #22, Newport Beach, CA 92660

Serves Irvine ยท based in Newport Beach
Design-buildRemodels & additionsHome builderGeneral contractor
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#9

ADU West Coast

5.0 (37 Google reviews)
โœ” CSLB License Verified #1064076

13001 Seal Beach Blvd #210, Seal Beach, CA 90740

Serves Irvine ยท based in Seal Beach
ADU specialistHome builderGeneral contractor
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#11

Modernyze

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

2323 Main St, Irvine, CA 92614

Based in Irvine
Remodels & additionsHome builderGeneral contractor
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#12

Look Wow Builders

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

1600 Dove St Ste 260, Newport Beach, CA 92660

Serves Irvine ยท based in Newport Beach
Remodels & additionsHome builderGeneral contractor
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#14

Kol & Co.

5.0 (24 Google reviews)

23431 Blue Bird Dr, Lake Forest, CA 92630

Serves Irvine ยท based in Lake Forest
Remodels & additionsHome builderGeneral contractor
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#17

Tenaya Homes

5.0 (22 Google reviews)
โœ” CSLB License Verified #1069583

Service-area business ยท Tustin

Serves Irvine ยท based in Tustin
Remodels & additionsHome builder
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#25

Vulcon Builders

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

2082 Michelson Dr #100, Irvine, CA 92612

Based in Irvine
Remodels & additionsHome builderGeneral contractor
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#26

OC Quality Builders

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

22981 Triton Way Unit C, Laguna Hills, CA 92653

Serves Irvine ยท based in Laguna Hills
Remodels & additionsHome builderGeneral contractor
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#27

Vision ADU

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

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

Serves Irvine ยท based in Anaheim
ADU specialist
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#45

NewGen ADU Builders

5.0 (7 Google reviews)
โœ” CSLB License Verified #1087166

18000 Studebaker Rd #700, Cerritos, CA 90703

Serves Irvine ยท based in Cerritos
ADU specialistHome builder
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#51

ADUscale

5.0 (4 Google reviews)

528 W Hampshire Ave, Anaheim, CA 92805

Serves Irvine ยท based in Anaheim
ADU specialistHome builder
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#53

Dv construction

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

10055 Lampson Ave, Garden Grove, CA 92840

Serves Irvine ยท based in Garden Grove
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#54

Tech LA Builder

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

20381 Lake Forest Dr, Lake Forest, CA 92630

Serves Irvine ยท based in Lake Forest
General contractor
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#56

Plus Home ADU

5.0 (3 Google reviews)
โœ” CSLB License Verified #1062063

Service-area business ยท Aliso Viejo

Serves Irvine ยท based in Aliso Viejo
ADU specialistRemodels & additionsHome builderGeneral contractor
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#66

CCS ADU Services

5.0 (2 Google reviews)

Service-area business ยท San Clemente

Serves Irvine ยท based in San Clemente
ADU specialistHome builder
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#78

White Lotus Homes

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

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

Serves Irvine ยท based in Costa Mesa
Home builder
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#80

KoBolt Construction

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

406 E Commonwealth Ave #3, Fullerton, CA 92832

Serves Irvine ยท based in Fullerton
Remodels & additionsHome builderGeneral contractor
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#82

USA Builders

5.0 (1 Google reviews)

Service-area business ยท Tustin

Serves Irvine ยท based in Tustin
Remodels & additionsHome builderGeneral contractor
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#93

Buena Park ADU

No rating yet (0 Google reviews)

6925 Aragon Cir, Buena Park, CA 90620

Serves Irvine ยท based in Buena Park
ADU specialistHome builder
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#95

ADU Makers

No rating yet (0 Google reviews)
โœ” CSLB License Verified #1104137

3400 La Sierra Ave, Riverside, CA 92503

Serves Irvine ยท based in Riverside
ADU specialist
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#96

Skye Construction

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

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

Serves Irvine ยท based in Santa Ana
General contractor
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#97

Orange Innovation

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

15122 Starboard St, Garden Grove, CA 92843

Serves Irvine ยท based in Garden Grove
General contractor
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#99

Rigi Home & Garden Design LLC

No rating yet (0 Google reviews)
โœ” CSLB License Verified #1161845

Service-area business ยท Newport Beach

Serves Irvine ยท based in Newport Beach
Garage conversionsRemodels & additionsHome builderGeneral contractor
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#100

J&R ADU

No rating yet (0 Google reviews)

Service-area business ยท Fountain Valley

Serves Irvine ยท based in Fountain Valley
ADU specialistPrefab / modularHome builder
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#102

ADU-BUILDS

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

Service-area business ยท Newport Beach

Serves Irvine ยท based in Newport Beach
ADU specialist
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#106

OCADUSTUDIO

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

13251 Pinto Rd, Garden Grove, CA 92843

Serves Irvine ยท based in Garden Grove
ADU specialistGeneral contractor
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Irvine ADU programs and pre-approved plans

Links verified November 2026. Program details change, so confirm current status with the city. See all SoCal pre-approved ADU plan programs.

Planning an ADU in Irvine? Start here

ADU Rental Income and Property Taxes in California: What to ExpectPrefab and Modular ADUs in California: Real Costs, Permits and PitfallsSB 9 vs ADU: Lot Splits, Duplexes and Backyard Units in CaliforniaHow Much Does It Cost to Build an ADU in Southern California?

All ADU guides โ†’

Irvine ADU FAQ

How many ADU builders serve Irvine?

Our directory lists 107 ADU builders and contractors that appear for Irvine on Google Maps, including companies based in nearby Orange County communities.

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

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

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