An independent directory of ADU and backyard-home builders — listings cross-checked against state contractor-license records where available, for homeowners comparing bids.
201 ADU builders listed109 guides & articlesUpdated May 30, 2026How we verify listings
RITZ builds the perfect backyard ADU with five star service from start to finish.
SnapADU is a design-build firm specializing exclusively in detached new construction accessory dwelling units in San Diego County.
SnapADU is a design-build firm specializing exclusively in detached new construction accessory dwelling units in San Diego County.
Custom ADU builders in San Jose, California with 30+ years of combined experience.
Tampa Bay ADU is a trusted local partner in accessory dwelling unit design, permitting, and construction in St. Petersburg.
SO CAL CASITAS & ADUS INC is a CSLB-licensed California contractor holding Class B (General Building) licenses based in Irvine, CA (Orange County). The license carries a $25,000 contractor's bond. Workers' compensation exemption is on file. CSLB License #1071406. California ADU (Accessory Dwelling Unit) projects typically require Class B or B-2 license holders for full-scope general contracting.
Comprehensive 2026 U.S. ADU market report: California's 67K+ contractor concentration, state policy landscape, prefab vs site-built pricing, permit timelines.
Compared: 10 US cities for ADU rental income. Avg rent, build cost, ROI timeline, STR legality, and verdict for each.
Compared: 10 ADU design styles from modern to Japanese-inspired. Defining elements, cost premium, neighborhood fit, and verdict.
Compared: 10 ADU financing options from HELOC to CalHFA grant. Max funding, rate, qualifying, and verdict for each.
Compared: 10 best US states for building ADUs. Statute, parking rules, max size, permit timeline, and verdict for each state.
Compared: 10 prefab ADU companies from Studio Shed to Abodu. Pricing, size, lead time, service area, and verdict for each.
Weekly updates on ADU regulations, builder spotlights, and backyard home trends.