Browse 60 ADU builders and contractors by services, location, ratings, and available documentation. Use the directory as a starting point, then confirm qualifications, license status, scope, and references directly with each business.
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Established Sacramento general contractor with 127 total permits and 17 ADU-specific permits in city records. 4.7-star rating with 127+ reviews.
Sacramento-based general contractor specializing in ADU construction and exterior renovation. James Hardie Preferred Certified installer for fire-resistant siding. CSLB License #1067361.
Highly recommended on Reddit. Known for quality craftsmanship. Featured 670sf casita at $196K.
Offers ADU financing and incentives guidance.
Known for streamlined process and fast timelines.
Helps homeowners plan ADUs and matches them with builders.
Online marketplace connecting homeowners with prefab ADU manufacturers.
Uses technology to streamline the ADU process.
High-quality prefab ADUs with fast installation.
Uses 3D printing technology for faster, more sustainable construction.
Architect-designed ADUs with a focus on quality and design.
Specializes in sustainable, energy-efficient ADU construction.
Consulting-focused company that helps homeowners navigate the ADU process.
Focuses exclusively on garage-to-ADU conversions.
Veteran-owned design-build ADU contractor. CSLB #1094366. 1-year labor warranty, 10-year structural warranty. Serves Sacramento and Placer County. Email: andrew@a1buildingcontractors.com
16 ADU-specific permits in City of Sacramento records. Active ADU developer in the Sacramento market.
ADU-focused contractor based in North Highlands. Advertises ADUs starting at $180K with typical rental income of $2,200/month. 12 ADU permits in city records.
Long-established Sacramento design-build firm focused on residential remodeling in Sacramento established neighborhoods. 124 total permits, 11 ADU-specific in city records. CSLB License #662204.
Architecture and engineering firm specializing in ADU conversions and duplex design. Offers structural engineering and turnkey project management. 11 ADU permits in city records.
Established Sacramento-region home builder since 2001. 76 total permits and 11 ADU-specific permits in city records. Serves greater Sacramento including Roseville and Granite Bay.
Most active ADU contractor in the City of Sacramento by permit volume. 72 ADU permits pulled in city records.
Focused on affordable housing solutions.
Listings combine public business information, owner-submitted details, and available third-party sources. “Documented records” may reflect either municipal permit records or BuildZoom project totals, so they are presented as source-specific context rather than a quality score.
Documented project and permit counts are directional proxies from mixed sources. They are not apples-to-apples and are not a quality ranking. Read the methodology.