ADU West Coast
Reviews
Vertically integrated one-stop ADU shop with 15+ years in LA County — handles design through construction with in-house permitting and financing support.
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About ADU West Coast
ADU West Coast is a vertically integrated design, engineering, and construction firm based in Seal Beach, California, specializing exclusively in accessory dwelling units across Southern California. With 15+ years of experience in home development projects across every major city in LA County, the company handles design, structural engineering, permitting, and construction under one roof — a true one-stop shop that eliminates the coordination problems common when working with separate architects and contractors. The firm converts underutilized garages, backyards, and other spaces into income-producing dwelling units. Their ADU types include garage conversions, over-the-garage additions, stand-alone detached units, and basement or attic conversions. They partner with Southern California homeowners and investors who want to maximize property value without the typical project management headaches. ADU West Coast handles every aspect of the permitting process, drawing on deep familiarity with LA County and Orange County zoning codes, setback requirements, and city-specific ADU ordinances. They also offer flexible financing options and understand real estate ROI — a differentiator for investor clients evaluating rental income potential. Holding California Contractor License #1064076, the company operates from their Seal Beach office and serves Long Beach, Whittier, and surrounding communities throughout Greater Los Angeles and Orange County.