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

ADU Builders in Redlands, CA

20 builders · ranked by Google rating and review volume · 8 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 Redlands 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 73,168 residents at the 2020 Census, Redlands is one of San Bernardino County's established communities. We found 20 ADU builders and contractors that show up for Redlands homeowners on Google Maps, 7 of them based in the city itself. Their average Google rating is 4.9 stars. 7 market themselves specifically as ADU builders, and 1 mention garage conversions. 8 have a matched, active CSLB license shown with a verified badge. The top-rated by our review-weighted score are Good Neighbor Construction, J.Peace Builders Inc and Straight Edge Builders.

Lots across San Bernardino County are often larger and land costs lower, which makes detached and prefab ADUs attractive. Foothill and mountain areas can face wildfire-zone construction requirements.

#2

J.Peace Builders Inc

5.0 (24 Google reviews)
✔ CSLB License Verified #1073588

414 E Rialto Ave STE B, San Bernardino, CA 92408

Serves Redlands · based in San Bernardino
General contractor
CallWebsiteView profile
#13

USModular, Inc.

4.6 (39 Google reviews)

579 W County Line Rd, Calimesa, CA 92320

Serves Redlands · based in Calimesa
ADU specialistPrefab / modularHome builderGeneral contractor
CallWebsiteView profile
#18

Hidden Peak Homes

No rating yet (0 Google reviews)

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

Serves Redlands · based in San Bernardino
Home builderGeneral contractor
CallView profile
#20

Rocket ADU Solutions

No rating yet (0 Google reviews)

1881 Commercenter E #138, San Bernardino, CA 92408

Serves Redlands · based in San Bernardino
ADU specialistPrefab / modular
CallView profile

Permits and pre-approved plans in Redlands

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

Planning an ADU in Redlands? Start here

Prefab and Modular ADUs in California: Real Costs, Permits and PitfallsTwo-Story and Above-Garage ADUs in California: Height Rules, Costs and DesignThe ADU Permit Process in California: Step by Step (2026)How Much Does It Cost to Build an ADU in Southern California?

All ADU guides →

Redlands ADU FAQ

How many ADU builders serve Redlands?

Our directory lists 20 ADU builders and contractors that appear for Redlands on Google Maps, including companies based in nearby San Bernardino County communities.

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

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

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 Redlands 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 San Bernardino County

San Bernardino 51Fontana 83Ontario 54Rancho Cucamonga 31Victorville 16Rialto 56Hesperia 18Chino 49Upland 27Chino Hills 117Apple Valley 17Highland 8
📞 Call 424-298-3600💬 Text us