ADU Cost Guides
What does a detached ADU or garage conversion actually cost? Real numbers, line-item breakdowns, and the variables that move the price up or down.
- ADU Cost Guide: What $300,000 Actually Buys You in 2026
A real-numbers cost breakdown for a $300k detached ADU build in 2026. What's included, where the money goes, what makes it cheaper, and what makes it more expensive. With line items, not ranges.
- What a California ADU Actually Costs in 2026
A real-numbers look at ADU cost in California in 2026: Bay Area to Central Valley, what CA code adds, permit fee waivers, and financing options.
- Garage Conversion to ADU: Real Costs, by Region
what a garage conversion to adu actually costs in 2026: line items for a 400 sq ft 2-car garage, the hidden costs, regional variation, and when a detached build pencils out instead
- ADU Financing: How Homeowners Actually Pay for One in 2026
The five financing products most homeowners use to pay for an ADU in 2026, with current rates, specific lender names, and a decision tree to pick the right one.
- How Much Can You Actually Rent an ADU for in California
Rent comparables by metro, the honest cash-flow math on a $300K build, the Fannie Mae October 2025 mortgage-qualification update, and the 7-year covenant gotcha if you used state financing.