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

ADU Builders in Moreno Valley, CA

8 builders · ranked by Google rating and review volume · 1 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 Moreno Valley 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

With roughly 208,634 residents at the 2020 Census, Moreno Valley is one of Riverside County's largest communities. We found 8 ADU builders and contractors that show up for Moreno Valley homeowners on Google Maps, 2 of them based in the city itself. Their average Google rating is 4.8 stars. 6 market themselves specifically as ADU builders. 1 has a matched, active CSLB license shown with a verified badge. The top-rated by our review-weighted score are Doza Build Inc - ADU Contractor, iLLUMi-SOL Construction Services - ADU Design & Construction and Adu's By Design.

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.

#4

USModular, Inc.

4.6 (39 Google reviews)

579 W County Line Rd, Calimesa, CA 92320

Serves Moreno Valley · based in Calimesa
ADU specialistPrefab / modularHome builderGeneral contractor
CallWebsiteView profile
#8

Hidden Peak Homes

No rating yet (0 Google reviews)

473 E Carnegie Dr #200, San Bernardino, CA 92408

Serves Moreno Valley · based in San Bernardino
Home builderGeneral contractor
CallView profile

Permits and pre-approved plans in Moreno Valley

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

Planning an ADU in Moreno Valley? Start here

How to Legalize an Unpermitted ADU in California (AB 2533)Prefab and Modular ADUs in California: Real Costs, Permits and PitfallsHow Long Does It Take to Build an ADU in Southern California?The ADU Permit Process in California: Step by Step (2026)

All ADU guides →

Moreno Valley ADU FAQ

How many ADU builders serve Moreno Valley?

Our directory lists 8 ADU builders and contractors that appear for Moreno Valley on Google Maps, including companies based in nearby Riverside County communities.

Do I need a permit to build an ADU in Moreno Valley?

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

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