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Planning and Sustainability

Innovation. Collaboration. Practical Solutions.

Phone: 503-823-7700

Fax: 503-823-7800

1900 SW 4th Ave, Suite 7100, Portland, OR 97201

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Historic Preservation

Advisory Council on Historic Preservation

The mission of the ACHP is to promote the preservation, enhancement, and productive use of our Nation's historic resources, and advise the President and Congress on national historic preservation policy.

African American Heritage Preservation Foundation

Dedicated to the preservation of African-American history and historical sites.

Friends of Terra Cotta

Promotes education and research in the preservation of architectural terra cotta and related ceramic materials.

Historic Homeworks

Helping owners, tradespeople, contractors and professionals understand and maintain their historic and older buildings.

Historic Preservation Learning Portal

NPS search portal for discovering information and training opportunities in the broad field of historic preservation.

League of Historic American Theaters

International not-for-profit membership association dedicated preserving the cultural and architectural heritage of historic theatres.

National Alliance of Preservation Commissions

Provides technical support, an information network, and advocacy to help local preservation and landmarks commissions accomplish their preservation objectives.

National Center for Preservation Technology and Training

Advances the use of science and technology in historic preservation, through training, education, research, technology transfer and partnerships.

National Historic Landmarks Program

National Register properties that have been recognized by the Secretary of the Interior as possessing exceptional value or quality in illustrating or interpreting the history of the United States.

National Park Service, Technical Preservation Service (technical bulletins, online education)

Publishes easy-to-read pamphlets, books, and online resources on preserving, rehabilitating and restoring historic buildings.

National Register of Historic Places (NPS)

America’s official list of cultural resources worthy of preservation, including districts, sites, buildings, structures, and objects that are significant in American history, architecture, archeology, engineering, and culture.

National Trust for Historic Preservation

Premier nationwide nonprofit preservation organization. Provides leadership, education & advocacy to save America's diverse historic places & revitalize communities. Chartered by Congress in 1949, NTHP has more than 275,000 members.

Partners for Sacred Places

National, non-sectarian, not-for-profit organization founded to encourage the care and active use of historic religious properties in America.

Preservation Directory

Online resource for historic preservation, building restoration and cultural resource management in the United States & Canada.

Secretary of the Interior’s Standards & Guidelines for Historic Properties

Promotes responsible preservation practices that help protect America’s irreplaceable cultural resources. Provides guidance on the four fundamental treatment approaches: Preservation, Rehabilitation, Restoration, and Reconstruction.

Trust for Architectural Easements

Largest preservation easement holding organization in the nation. Provides grants to preservation organizations and community groups. Education initiatives.

Heartbleed Security Notice

A serious security vulnerability known as "Heartbleed" was recently discovered in OpenSSL, a popular software library commonly used by many websites on the internet to encrypt communication between a user's computer and a web server.

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