ADU builder? The featured spot in your city is open. Call or text 424-298-3600

ADU Builders in Corona, CA

32 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 Corona homeowners who are comparing builders right now. Includes your logo, project photos, a direct call button and a link to your website.

📞 Call 424-298-3600💬 Text 424-298-3600

Located in Riverside County, Corona had a 2020 Census population of about 157,136. We found 32 ADU builders and contractors that show up for Corona homeowners on Google Maps, 5 of them based in the city itself. Their average Google rating is 4.8 stars. 6 market themselves specifically as ADU builders. 18 have a matched, active CSLB license shown with a verified badge. The top-rated by our review-weighted score are SouthSTAR Construction, Storm Guard Construction Inc. and MDT, Inc.

Inland lots in Riverside County tend to be larger, which suits detached ADUs and multigenerational layouts. Summer heat makes insulation, roof design and HVAC sizing worth discussing with your builder.

#3

MDT, Inc

5.0 (32 Google reviews)

6744 Magnolia Ave, Riverside, CA 92506

Serves Corona · based in Riverside
Remodels & additionsGeneral contractor
CallWebsiteView profile
#10

JJ.Builders

5.0 (11 Google reviews)
✔ CSLB License Verified #1157031

Service-area business · Norco

Serves Corona · based in Norco
Remodels & additionsHome builderGeneral contractor
CallWebsiteView profile
#14

Kirmina Construction

5.0 (8 Google reviews)
✔ CSLB License Verified #1144144

8615 Mesa Oak Dr, Riverside, CA 92508

Serves Corona · based in Riverside
Remodels & additionsHome builderGeneral contractor
CallWebsiteView profile
#18

The ADU Pro

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

15338 Central Ave, Chino, CA 91710

Serves Corona · based in Chino
ADU specialistHome builderGeneral contractor
CallWebsiteView profile
#19

M.E.A Construction Inc.

5.0 (3 Google reviews)
✔ CSLB License Verified #1007006

1394 Via Vista Dr, Riverside, CA 92506

Serves Corona · based in Riverside
Remodels & additionsHome builderGeneral contractor
CallWebsiteView profile
#25

ADU Makers

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

3400 La Sierra Ave, Riverside, CA 92503

Serves Corona · based in Riverside
ADU specialist
CallView profile

Permits and pre-approved plans in Corona

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

Planning an ADU in Corona? Start here

ADU Rental Income and Property Taxes in California: What to ExpectHow Long Does It Take to Build an ADU in Southern California?How Much Does It Cost to Build an ADU in Southern California?Two-Story and Above-Garage ADUs in California: Height Rules, Costs and Design

All ADU guides →

Corona ADU FAQ

How many ADU builders serve Corona?

Our directory lists 32 ADU builders and contractors that appear for Corona on Google Maps, including companies based in nearby Riverside County communities.

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

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

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 Corona 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 Riverside County

Riverside 54Moreno Valley 8Murrieta 32Temecula 30Jurupa Valley 43Menifee 19Hemet 13Indio 4Perris 65Lake Elsinore 20Eastvale 26San Jacinto 11
📞 Call 424-298-3600💬 Text us