Sign in Take the guide

Drafting…

Browse
Resources
Company
Legal

Built for real projects. Plans, open requests, and the architects behind them.

PlanGrounds is architect-led for the design community. Polygen Lab LLC runs product, billing, and legal.

© 2026 PlanGrounds

ADU plans — browse accessory dwelling designs | PlanGrounds

Plan category

ADU plans

Accessory dwelling units are about efficiency: smart kitchens, privacy, and buildable details. Start here, then customize with a professional for your jurisdiction.

Open in Explore Post a project Compare plans

Small ADU — 480 sq ft

Small ADU — 480 sq ft

480 ft²Est. build $95,000–160,000