Preserving our nation's historic buildings.

Technical Preservation Services develops historic preservation policy and guidance on preserving and rehabilitating historic buildings, administers the Federal Historic Preservation Tax Incentives Program for rehabilitating historic buildings, and sets the Secretary of the Interior's Standards for the Treatment of Historic Properties.

New Guidance About Green Roofs Launched

Are you curious about green roofs and how they work? Explore our new web feature Green Roofs on Historic Buildings to learn more.