
ADUs — ADU Builder & Contractor — Stanislaus County & the Central Valley
California's ADU laws have made backyard units faster to permit than they've been in fifty years, and the Central Valley's lot sizes make them genuinely practical — space for parents, rental income, or a real office that isn't the spare bedroom.
We treat ADUs like small houses, not like sheds with plumbing: proper insulation, real windows, full kitchens and baths finished to primary-home standards. The design-build process matters here too — ADU budgets are dominated by site work and utility runs that only show up if someone walks the property and does the engineering before quoting you a fantasy number.






How much does an ADU cost in Stanislaus County?
A garage-conversion junior ADU typically runs $95,000–$180,000; a detached studio $220,000–$380,000; a detached 1–2 bedroom unit $350,000–$750,000+. Site work and utility runs are the biggest variables.
Tell us about the project.
We typically respond within one business day.
