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ADU Builders in Santa Monica, CA

110 builders · ranked by Google rating and review volume · 55 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 Santa Monica 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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Located in Los Angeles County, Santa Monica had a 2020 Census population of about 93,076. We found 110 ADU builders and contractors that show up for Santa Monica homeowners on Google Maps, 14 of them based in the city itself. Their average Google rating is 4.9 stars. 28 market themselves specifically as ADU builders, and 8 mention garage conversions. 55 have a matched, active CSLB license shown with a verified badge. The top-rated by our review-weighted score are Shulmen Construction LA, Right Path Builders and Rahban Development.

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.

#1

Shulmen Construction LA

5.0 (370 Google reviews)
✔ CSLB License Verified #1077837

1010 S Bedford St, Los Angeles, CA 90035

Serves Santa Monica · based in Los Angeles
Remodels & additionsGeneral contractor
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#4

Silver Hammer Builders

5.0 (82 Google reviews)
✔ CSLB License Verified #1107880

11150 W Olympic Blvd #1050, Los Angeles, CA 90064

Serves Santa Monica · based in Los Angeles
Remodels & additionsHome builderGeneral contractor
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#5

Beverly Builders Group

5.0 (68 Google reviews)
✔ CSLB License Verified #1106776

East Tower, 9100 Wilshire Blvd #333, Beverly Hills, CA 90212

Serves Santa Monica · based in Beverly Hills
Remodels & additionsHome builderGeneral contractor
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#11

Oasis Builders, Inc.

5.0 (45 Google reviews)
✔ CSLB License Verified #1055132

11500 W Olympic Blvd #400, Los Angeles, CA 90064

Serves Santa Monica · based in Los Angeles
Garage conversionsRemodels & additionsHome builderGeneral contractor
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#12

Safe Side Builders Inc

5.0 (45 Google reviews)
✔ CSLB License Verified #1057207

1702 S Robertson Blvd Unit 65, Los Angeles, CA 90035

Serves Santa Monica · based in Los Angeles
Garage conversionsRemodels & additionsGeneral contractor
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#13

Dreams Renovation

5.0 (43 Google reviews)
✔ CSLB License Verified #1101893

409 N Camden Dr Suite 205B, Beverly Hills, CA 90210

Serves Santa Monica · based in Beverly Hills
Remodels & additionsHome builderGeneral contractor
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#14

GreenTech Builders Inc

5.0 (39 Google reviews)
✔ CSLB License Verified #999332

360 Burnside Ave Unit 9J, Los Angeles, CA 90036

Serves Santa Monica · based in Los Angeles
Garage conversionsRemodels & additionsHome builderGeneral contractor
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#15

Hami Construction Inc

5.0 (39 Google reviews)
✔ CSLB License Verified #1105623

907 Westwood Blvd, Los Angeles, CA 90024

Serves Santa Monica · based in Los Angeles
Prefab / modularRemodels & additionsHome builderGeneral contractor
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#20

Sky Builders ZHR

5.0 (34 Google reviews)
✔ CSLB License Verified #1079863

Service-area business · Santa Monica

Serves Santa Monica · based in Santa Monica
Remodels & additionsHome builderGeneral contractor
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#21

RL Remodeling

5.0 (34 Google reviews)

2412 Clement Ave, Venice, CA 90291

Serves Santa Monica · based in Venice
Garage conversionsRemodels & additionsHome builderGeneral contractor
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#22

Optima Design & Build

5.0 (32 Google reviews)
✔ CSLB License Verified #1124135

Service-area business · Santa Monica

Serves Santa Monica · based in Santa Monica
Design-buildRemodels & additionsGeneral contractor
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#23

AP Remodeling Inc.

4.9 (158 Google reviews)
✔ CSLB License Verified #1049032

5972 Washington Blvd, Culver City, CA 90232

Serves Santa Monica · based in Culver City
Garage conversionsRemodels & additionsHome builderGeneral contractor
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#28

Asep Contractors

5.0 (27 Google reviews)
✔ CSLB License Verified #1093086

1501 Lincoln Blvd #1081, Venice, CA 90291

Serves Santa Monica · based in Venice
General contractor
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#30

AXE Construction

5.0 (26 Google reviews)
✔ CSLB License Verified #1069232

8383 Wilshire Blvd Unit 363, Beverly Hills, CA 90211

Serves Santa Monica · based in Beverly Hills
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#32

Joel & Co. Construction

4.9 (88 Google reviews)
✔ CSLB License Verified #967864

11693 San Vicente Blvd, Los Angeles, CA 90049

Serves Santa Monica · based in Los Angeles
Remodels & additionsHome builderGeneral contractor
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#33

Golden ADU

5.0 (25 Google reviews)

2412 Thurman Ave., Los Angeles, CA 90016

Serves Santa Monica · based in Los Angeles
ADU specialistHome builder
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#34

Buildda, Inc.

5.0 (24 Google reviews)
✔ CSLB License Verified #1131088

Service-area business · Inglewood

Serves Santa Monica · based in Inglewood
Remodels & additionsGeneral contractor
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#38

JMS Developers Inc.

4.9 (47 Google reviews)
✔ CSLB License Verified #1040625

1080 S La Cienega Blvd #309, Los Angeles, CA 90035

Serves Santa Monica · based in Los Angeles
Remodels & additionsGeneral contractor
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#39

Nagar Builders

5.0 (19 Google reviews)
✔ CSLB License Verified #1069052

6245 Wilshire Blvd Ste 1511, Los Angeles, CA 90048

Serves Santa Monica · based in Los Angeles
Remodels & additionsHome builderGeneral contractor
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#44

Pinnacle Design and Build

5.0 (18 Google reviews)
✔ CSLB License Verified #1128627

6250 Buckingham Pkwy, Culver City, CA 90230

Serves Santa Monica · based in Culver City
Design-buildRemodels & additionsHome builderGeneral contractor
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#45

M.E.Development, Inc.

5.0 (17 Google reviews)
✔ CSLB License Verified #992342

6015 Washington Blvd, Culver City, CA 90232

Serves Santa Monica · based in Culver City
Remodels & additionsHome builderGeneral contractor
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#46

Ohayon Construction

5.0 (17 Google reviews)
✔ CSLB License Verified #1039632

340 Hayworth Ave, Los Angeles, CA 90048

Serves Santa Monica · based in Los Angeles
Remodels & additionsHome builderGeneral contractor
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#49

GreenWise Builders

4.9 (31 Google reviews)
✔ CSLB License Verified #1120384

10220 Culver Blvd Ste 202, Culver City, CA 90232

Serves Santa Monica · based in Culver City
Remodels & additionsHome builderGeneral contractor
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#51

ARM Builders Inc

5.0 (15 Google reviews)
✔ CSLB License Verified #915352

1080 S La Cienega Blvd Ste 311, Los Angeles, CA 90035

Serves Santa Monica · based in Los Angeles
Remodels & additionsHome builderGeneral contractor
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#52

IA Builders

5.0 (15 Google reviews)

Service-area business · Culver City

Serves Santa Monica · based in Culver City
Remodels & additionsHome builderGeneral contractor
CallWebsiteView profile
#53

Brigada Builders, Inc.

5.0 (15 Google reviews)
✔ CSLB License Verified #933353

400 Corporate Pointe #300, Culver City, CA 90230

Serves Santa Monica · based in Culver City
Remodels & additionsHome builderGeneral contractor
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#58

A+ Home Additions

4.8 (130 Google reviews)

9675 Brighton Way #292, Beverly Hills, CA 90210

Serves Santa Monica · based in Beverly Hills
Remodels & additionsGeneral contractor
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#59

Bela Development

4.8 (107 Google reviews)
✔ CSLB License Verified #1038287

1023 Abbot Kinney Blvd, Venice, CA 90291

Serves Santa Monica · based in Venice
Garage conversionsRemodels & additionsHome builderGeneral contractor
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#60

Reform Building Group

5.0 (12 Google reviews)
✔ CSLB License Verified #1136472

1752 Stoner Ave, Los Angeles, CA 90025

Serves Santa Monica · based in Los Angeles
Remodels & additionsHome builderGeneral contractor
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#61

Blue Vibe Remodeling

5.0 (12 Google reviews)
✔ CSLB License Verified #1151522

1818 S Robertson Blvd, Los Angeles, CA 90035

Serves Santa Monica · based in Los Angeles
Remodels & additionsGeneral contractor
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#63

ADA BUILDERS INC

5.0 (10 Google reviews)
✔ CSLB License Verified #1061665

1070 S Holt Ave Unit 206, Los Angeles, CA 90035

Serves Santa Monica · based in Los Angeles
General contractor
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#64

Rolen Construction

5.0 (10 Google reviews)
✔ CSLB License Verified #1105889

984 Monument St #204, Pacific Palisades, CA 90272

Serves Santa Monica · based in Pacific Palisades
Remodels & additionsHome builderGeneral contractor
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#68

Oria Builders

5.0 (7 Google reviews)
✔ CSLB License Verified #1029255

3110 Main St Ste 200, Santa Monica, CA 90405

Based in Santa Monica
Remodels & additionsHome builderGeneral contractor
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#69

Nestadu

5.0 (6 Google reviews)

2450 Colorado Ave #100e, Santa Monica, CA 90404

Based in Santa Monica
ADU specialistHome builder
CallWebsiteView profile
#72

Waconah Construction

4.8 (16 Google reviews)
✔ CSLB License Verified #908219

616 Edgewood St, Inglewood, CA 90302

Serves Santa Monica · based in Inglewood
Remodels & additionsHome builderGeneral contractor
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#75

Builders

5.0 (5 Google reviews)

1431 Ocean Ave Ste 1400, Santa Monica, CA 90401

Based in Santa Monica
Home builderGeneral contractor
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#79

ADU USA

5.0 (3 Google reviews)

10801 National Blvd, Los Angeles, CA 90064

Serves Santa Monica · based in Los Angeles
ADU specialist
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#82

ADU Architect

5.0 (3 Google reviews)

Service-area business · Santa Monica

Serves Santa Monica · based in Santa Monica
ADU specialistGeneral contractor
CallView profile
#83

Eazy ADU

5.0 (2 Google reviews)
✔ CSLB License Verified #1057881

5670 Wilshire Blvd Ste 1801, Los Angeles, CA 90036

Serves Santa Monica · based in Los Angeles
ADU specialistHome builderGeneral contractor
CallWebsiteView profile
#85

Bossage Homes

5.0 (2 Google reviews)

914 S Robertson Blvd Suite 200A, Los Angeles, CA 90035

Serves Santa Monica · based in Los Angeles
Remodels & additionsHome builderGeneral contractor
CallWebsiteView profile
#86

Giant ADU Builders

5.0 (2 Google reviews)

905 Dickson St, Marina Del Rey, CA 90292

Serves Santa Monica · based in Marina Del Rey
ADU specialistGeneral contractor
CallView profile
#92

MDM G Contractors

5.0 (1 Google reviews)
✔ CSLB License Verified #1139754

Service-area business · Santa Monica

Serves Santa Monica · based in Santa Monica
Remodels & additionsHome builderGeneral contractor
CallView profile
#94

Sunset Built Inc

4.5 (8 Google reviews)
✔ CSLB License Verified #1005054

8383 Wilshire Blvd #800, Beverly Hills, CA 90211

Serves Santa Monica · based in Beverly Hills
Remodels & additionsHome builderGeneral contractor
CallWebsiteView profile
#98

LADU

3.7 (3 Google reviews)

127 Broadway Ste 201, Santa Monica, CA 90401

Based in Santa Monica
ADU specialistHome builder
CallWebsiteView profile
#100

Direct ADU

No rating yet (0 Google reviews)

1651 1/2 S Rimpau Blvd, Los Angeles, CA 90019

Serves Santa Monica · based in Los Angeles
ADU specialistHome builder
CallWebsiteView profile
#101

The ADU Factory

No rating yet (0 Google reviews)

1504 S Fairfax Ave Unit 10, Los Angeles, CA 90019

Serves Santa Monica · based in Los Angeles
ADU specialistPrefab / modular
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#102

Built ADU

No rating yet (0 Google reviews)

Service-area business · Culver City

Serves Santa Monica · based in Culver City
ADU specialistPrefab / modularHome builderGeneral contractor
CallWebsiteView profile
#103

Aduscale

No rating yet (0 Google reviews)

1414 Greenfield Ave, Los Angeles, CA 90025

Serves Santa Monica · based in Los Angeles
ADU specialistPrefab / modularHome builder
CallWebsiteView profile
#104

Kavo ADU

No rating yet (0 Google reviews)

5919 W 3rd St Ste 2B, Los Angeles, CA 90036

Serves Santa Monica · based in Los Angeles
ADU specialistRemodels & additionsHome builderGeneral contractor
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#105

New Cali Construction Inc.

No rating yet (0 Google reviews)
✔ CSLB License Verified #1008892

10000 Washington Blvd #600, Culver City, CA 90232

Serves Santa Monica · based in Culver City
Remodels & additionsGeneral contractor
CallWebsiteView profile
#107

ADU Team

No rating yet (0 Google reviews)

280 S Beverly Dr #315, Beverly Hills, CA 90212

Serves Santa Monica · based in Beverly Hills
ADU specialist
CallView profile

Permits and pre-approved plans in Santa Monica

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

Planning an ADU in Santa Monica? Start here

How Long Does It Take to Build an ADU in Southern California?Garage Conversion ADU Cost in Southern California (and What Drives It)How to Choose an ADU Builder in Southern California: 15-Point ChecklistHow Much Does It Cost to Build an ADU in Southern California?

All ADU guides →

Santa Monica ADU FAQ

How many ADU builders serve Santa Monica?

Our directory lists 110 ADU builders and contractors that appear for Santa Monica on Google Maps, including companies based in nearby Los Angeles County communities.

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

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

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 Monica 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 Los Angeles County

Los Angeles 118Long Beach 119Santa Clarita 27Glendale 117Lancaster 12Palmdale 12Pomona 67Torrance 98Pasadena 100Downey 28West Covina 68El Monte 24
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