Draw On Your Property. See What You Can Build.

Choose an ADU or a primary-residence addition for a supported California property. When connected data is available, AddHaus identifies the jurisdiction, displays mapped geometry, and prepares a preliminary project-size screen.

Coverage varies by jurisdiction. AddHaus currently supports a reviewed selection of California addresses and planning-agency contacts; it does not provide complete statewide parcel, zoning, code, setback, permit, or entitlement coverage. Any unavailable or uncertain information is marked for review, and official records and agency determinations control.