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ADU Builders in Monterey Park, CA

38 builders · ranked by Google rating and review volume · 18 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 Monterey Park 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 61,096 residents at the 2020 Census, Monterey Park is one of Los Angeles County's established communities. We found 38 ADU builders and contractors that show up for Monterey Park homeowners on Google Maps, 4 of them based in the city itself. Their average Google rating is 4.7 stars. 7 market themselves specifically as ADU builders, and 2 mention garage conversions. 18 have a matched, active CSLB license shown with a verified badge. The top-rated by our review-weighted score are Coronado Construction Company Inc, Zenith Builder and ADU HVAC Monterey Park.

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.

#2

Zenith Builder

5.0 (46 Google reviews)
✔ CSLB License Verified #1035285

Service-area business · Temple City

Serves Monterey Park · based in Temple City
Remodels & additions
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#7

Nott & Associates

5.0 (8 Google reviews)
✔ CSLB License Verified #746905

1508 Mission St, South Pasadena, CA 91030

Serves Monterey Park · based in South Pasadena
Remodels & additionsHome builderGeneral contractor
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#9

Accurate Builders and Repair

5.0 (7 Google reviews)
✔ CSLB License Verified #922391

5641 Cambury Ave, Temple City, CA 91780

Serves Monterey Park · based in Temple City
Remodels & additionsGeneral contractor
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#10

LUDIS INC

5.0 (7 Google reviews)
✔ CSLB License Verified #1061815

15 E McLean St, Alhambra, CA 91801

Serves Monterey Park · based in Alhambra
Remodels & additionsHome builderGeneral contractor
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#12

Casas Construction

5.0 (6 Google reviews)
✔ CSLB License Verified #1101290

2181 S Atlantic Blvd Ste 212, Commerce, CA 90040

Serves Monterey Park · based in Commerce
Remodels & additionsHome builderGeneral contractor
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#20

BUILDER 20 INC

5.0 (3 Google reviews)
✔ CSLB License Verified #1023066

1817 N Ave 56, Los Angeles, CA 90042

Serves Monterey Park · based in Los Angeles
General contractor
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#22

A.D.U. Builders

5.0 (2 Google reviews)
✔ CSLB License Verified #1080549

217 E Victoria Ave, Montebello, CA 90640

Serves Monterey Park · based in Montebello
ADU specialist
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#24

ALIGCUS ADU

4.6 (10 Google reviews)

1841 S San Gabriel Blvd Unit D, San Gabriel, CA 91776

Serves Monterey Park · based in San Gabriel
ADU specialist
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#28

JP Construction Co.

4.6 (5 Google reviews)
✔ CSLB License Verified #642751

2714 Stingle Ave, Rosemead, CA 91770

Serves Monterey Park · based in Rosemead
Remodels & additionsGeneral contractor
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#36

Robles Inc ADU

No rating yet (0 Google reviews)

Service-area business · La Puente

Serves Monterey Park · based in La Puente
ADU specialist
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Permits and pre-approved plans in Monterey Park

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

Planning an ADU in Monterey Park? Start here

SB 9 vs ADU: Lot Splits, Duplexes and Backyard Units in CaliforniaHow to Legalize an Unpermitted ADU in California (AB 2533)How Long Does It Take to Build an ADU in Southern California?ADU Rental Income and Property Taxes in California: What to Expect

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Monterey Park ADU FAQ

How many ADU builders serve Monterey Park?

Our directory lists 38 ADU builders and contractors that appear for Monterey Park on Google Maps, including companies based in nearby Los Angeles County communities.

Do I need a permit to build an ADU in Monterey Park?

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

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 Monterey Park 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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