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ADU Builders in Pomona, CA

67 builders · ranked by Google rating and review volume · 34 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 Pomona 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 151,713 residents at the 2020 Census, Pomona is one of Los Angeles County's largest communities. We found 67 ADU builders and contractors that show up for Pomona homeowners on Google Maps, 9 of them based in the city itself. Their average Google rating is 4.8 stars. 22 market themselves specifically as ADU builders, and 1 mention garage conversions. 34 have a matched, active CSLB license shown with a verified badge. The top-rated by our review-weighted score are JNC Construction, Prime Team Builders, Inc. and Skilled Home Builders.

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

JNC Construction

5.0 (143 Google reviews)

9360 Base Line Rd Ste H, Rancho Cucamonga, CA 91701

Serves Pomona · based in Rancho Cucamonga
Remodels & additionsHome builderGeneral contractor
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#5

St Paul Contracting

5.0 (25 Google reviews)
✔ CSLB License Verified #1104071

9650 Business Center Dr Bldg 17, Suite 131, Rancho Cucamonga, CA 91730

Serves Pomona · based in Rancho Cucamonga
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#13

Capy Construction

5.0 (15 Google reviews)
✔ CSLB License Verified #1120565

Service-area business · Walnut

Serves Pomona · based in Walnut
Remodels & additionsHome builderGeneral contractor
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#14

Lopez United Inc

5.0 (14 Google reviews)
✔ CSLB License Verified #841932

11991 Silicon Ave, Chino, CA 91710

Serves Pomona · based in Chino
Remodels & additionsHome builderGeneral contractor
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#16

Salem Builders

5.0 (13 Google reviews)

Service-area business · Montclair

Serves Pomona · based in Montclair
Remodels & additionsHome builderGeneral contractor
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#28

The ADU Company

5.0 (6 Google reviews)
✔ CSLB License Verified #1118354

504 E Navilla Pl, Covina, CA 91723

Serves Pomona · based in Covina
ADU specialistRemodels & additionsHome builderGeneral contractor
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#35

H&H Construction

5.0 (4 Google reviews)
✔ CSLB License Verified #868003

120 W Dayton St, Upland, CA 91786

Serves Pomona · based in Upland
Remodels & additionsGeneral contractor
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#36

DMAX Construction

5.0 (4 Google reviews)

621 N Monte Vista Ave, San Dimas, CA 91773

Serves Pomona · based in San Dimas
Remodels & additionsGeneral contractor
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#37

The ADU Pro

4.7 (15 Google reviews)
✔ CSLB License Verified #1128679

15338 Central Ave, Chino, CA 91710

Serves Pomona · based in Chino
ADU specialistHome builderGeneral contractor
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#40

ADU Experts

5.0 (3 Google reviews)

Service-area business · Azusa

Serves Pomona · based in Azusa
ADU specialistGeneral contractor
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#41

B & D Construction

4.7 (13 Google reviews)
✔ CSLB License Verified #409057

1472 Avenida Loma Vista, San Dimas, CA 91773

Serves Pomona · based in San Dimas
Remodels & additionsHome builderGeneral contractor
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#44

OSHI Construction Inc.

5.0 (2 Google reviews)
✔ CSLB License Verified #990408

10722 Arrow Route Ste 304, Rancho Cucamonga, CA 91730

Serves Pomona · based in Rancho Cucamonga
Remodels & additionsHome builderGeneral contractor
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#45

BAM Construction Inc

5.0 (2 Google reviews)
✔ CSLB License Verified #952311

12345 Mountain Ave Unit N232, Chino, CA 91710

Serves Pomona · based in Chino
Remodels & additionsGeneral contractor
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#48

R&R Improvements

4.6 (10 Google reviews)
✔ CSLB License Verified #1087664

16226 Windcrest Dr, Fontana, CA 92337

Serves Pomona · based in Fontana
Remodels & additionsHome builderGeneral contractor
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#55

BCM Group Inc

4.0 (4 Google reviews)
✔ CSLB License Verified #968356

9339 Feron Blvd, Rancho Cucamonga, CA 91730

Serves Pomona · based in Rancho Cucamonga
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#59

JLF ADU

No rating yet (0 Google reviews)
✔ CSLB License Verified #1075968

4716 N Fircroft Ave, Covina, CA 91722

Serves Pomona · based in Covina
ADU specialist
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Permits and pre-approved plans in Pomona

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

Planning an ADU in Pomona? Start here

ADU Rental Income and Property Taxes in California: What to ExpectPrefab and Modular ADUs in California: Real Costs, Permits and PitfallsThe ADU Permit Process in California: Step by Step (2026)JADU vs ADU in California: Size, Rules, Cost and Which to Build

All ADU guides →

Pomona ADU FAQ

How many ADU builders serve Pomona?

Our directory lists 67 ADU builders and contractors that appear for Pomona on Google Maps, including companies based in nearby Los Angeles County communities.

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

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

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 Pomona 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 12Torrance 98Pasadena 100Downey 28West Covina 68El Monte 24Inglewood 46
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