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ADU Builders in Paramount, CA

59 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 Paramount 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 53,733 residents at the 2020 Census, Paramount is one of Los Angeles County's established communities. We found 59 ADU builders and contractors that show up for Paramount homeowners on Google Maps, 2 of them based in the city itself. Their average Google rating is 4.8 stars. 12 market themselves specifically as ADU builders, and 3 mention garage conversions. 34 have a matched, active CSLB license shown with a verified badge. The top-rated by our review-weighted score are Legendz Construction & Remodeling, Domus Design Build and Hybrid Renovations.

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.

#3

Hybrid Renovations

4.9 (162 Google reviews)
✔ CSLB License Verified #1134177

10350 Heritage Park Dr Ste 204, Santa Fe Springs, CA 90670

Serves Paramount · based in Santa Fe Springs
Remodels & additionsGeneral contractor
CallWebsiteView profile
#8

Rockwood Remodels

5.0 (17 Google reviews)
✔ CSLB License Verified #934419

10017 Walnut St, Bellflower, CA 90706

Serves Paramount · based in Bellflower
Remodels & additionsHome builder
CallWebsiteView profile
#10

Ga Design Build

4.9 (29 Google reviews)

16226 Clark Ave, Bellflower, CA 90706

Serves Paramount · based in Bellflower
Design-buildRemodels & additionsHome builderGeneral contractor
CallWebsiteView profile
#20

ADU Certified

5.0 (8 Google reviews)
✔ CSLB License Verified #1041789

4201 Long Beach Blvd #422, Long Beach, CA 90807

Serves Paramount · based in Long Beach
ADU specialistRemodels & additionsHome builderGeneral contractor
CallWebsiteView profile
#22

NewGen ADU Builders

5.0 (7 Google reviews)
✔ CSLB License Verified #1087166

18000 Studebaker Rd #700, Cerritos, CA 90703

Serves Paramount · based in Cerritos
ADU specialistHome builder
CallView profile
#37

Fiero Development

4.5 (4 Google reviews)
✔ CSLB License Verified #1155500

11029 Atlantic Ave, Lynwood, CA 90262

Serves Paramount · based in Lynwood
General contractor
CallView profile
#43

Pro Starz

4.2 (5 Google reviews)
✔ CSLB License Verified #989072

11306 183rd St #205, Cerritos, CA 90703

Serves Paramount · based in Cerritos
CallWebsiteView profile
#44

Rocport Inc.

4.1 (9 Google reviews)

15059 E Imperial Hwy, La Mirada, CA 90638

Serves Paramount · based in La Mirada
Remodels & additionsGeneral contractor
CallWebsiteView profile
#47

Buena Park ADU

No rating yet (0 Google reviews)

6925 Aragon Cir, Buena Park, CA 90620

Serves Paramount · based in Buena Park
ADU specialistHome builder
CallView profile
#48

ADU MAXX

No rating yet (0 Google reviews)

4401 Atlantic Ave #200, Long Beach, CA 90807

Serves Paramount · based in Long Beach
ADU specialist
CallWebsiteView profile
#50

ADU

No rating yet (0 Google reviews)

13809 Actina Ave, Bellflower, CA 90706

Serves Paramount · based in Bellflower
ADU specialist
View profile
#51

NexaBuild Construction

No rating yet (0 Google reviews)
✔ CSLB License Verified #1155013

Service-area business · Cypress

Serves Paramount · based in Cypress
Remodels & additionsHome builderGeneral contractor
CallWebsiteView profile
#59

DR Construction

No rating yet (0 Google reviews)
✔ CSLB License Verified #641193

9319 Highdale St, Bellflower, CA 90706

Serves Paramount · based in Bellflower
Remodels & additionsHome builder
CallWebsiteView profile

Permits and pre-approved plans in Paramount

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

Planning an ADU in Paramount? Start here

ADU Rental Income and Property Taxes in California: What to ExpectHow to Choose an ADU Builder in Southern California: 15-Point ChecklistHow Long Does It Take to Build an ADU in Southern California?JADU vs ADU in California: Size, Rules, Cost and Which to Build

All ADU guides →

Paramount ADU FAQ

How many ADU builders serve Paramount?

Our directory lists 59 ADU builders and contractors that appear for Paramount on Google Maps, including companies based in nearby Los Angeles County communities.

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

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

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 Paramount 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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