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State Historic Preservation Offices

Before nominating any historic property to the State and National Registers of Historic Places, the property or district must be deemed “eligible” for listing by its representative state historic preservation office (SHPO). To determine eligibility, complete the preliminary form provided by each state’s office (PDFs below). Once a SHPO representative deems the property “eligible” the process of completing the National Register Nomination Form may begin.

Forms and instructions for National Register Nomination can be found at:
National Park Service Guidelines for Evaluating and Nominating Properties That Have Achieved Significance Within the Past Fifty Years (pdf):

New York State Historic Preservation Office
Search properties on the State Register using the SPHINX System; learn how to complete a National Register nomination form; find detailed information regarding tax credits and other preservation tools; and more.
Application forms and guidelines for State Register: - documents

New Jersey State Historic Preservation Office
View properties listed on the State Register, organized by county; become familiar with the regulations pertaining to Section 106 reviews; learn about preservation programs specific to New Jersey; and more.
Application forms and guidelines for State Register:

Connecticut Commission on Culture & Tourism, Historic Preservation and Tourism Division
View properties listed on the State Register, organized by county; download Historic Preservation Tax Credit Program application; learn about state grant initiatives; and more.

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Local Nonprofit Preservation Organizations by State

Connecticut Trust for Historic Preservation
Find information regarding preservation in Connecticut, including restoration help, tips for researching buildings, resources for investing in historic real estate, a directory of restoration services, and more.

The Philip Johnson Glass House
Opened to the public in 2007, the Glass House site is a collection of buildings designed by Philip Johnson and now owned by the National Trust for Historic Preservation. In addition to tours, the Glass House organization directs programs devoted to increasing appreciation for buildings and landscapes of the Modern Movement.

New Canaan Historical Society
The New Canaan Historical Society is active in the preservation of the town’s mid-century modern architecture. Find information on particular New Canaan architects in the Society’s archives and visit their semi-permanent exhibition "New Canaan Architects 1953-1983."

New Haven Preservation Trust
An advocacy group providing information, historic research, tours and private consultations in New Haven. Currently working on a Modern architecture survey of the city.

New Jersey Trust for Historic Preservation
Learn about programs and incentives in place for historic properties in New Jersey, including preservation easements, restoration tax credits and grants.

Preservation New Jersey
Advocates for and promotes preservation as a sustainable strategy to protect New Jersey’s heritage, including that of the recent past.

Preservation League of New York State
Administers grant and loan programs, advances public policy on preservation in New York, and offers technical assistance for restoration projects.

New York Landmarks Conservancy
Administers preservation programs for the protection of landmarks in New York City.

Greenwich Village Society for Historic Preservation
Advocates for the architectural heritage and cultural history of New York City’s Greenwich Village, the East Village and NoHo neighborhoods.

Historic Districts Council
Advocates for New York City’s 80+ historic districts as well as areas meriting district designation and significant individual buildings.

Landmark West!
Advocates for the architectural heritage of New York City’s Upper West Side from 59th to 110th streets between Central Park West and Riverside Drive. Look up neighborhood buildings through the digital database.

Society for the Preservation of Long Island Antiquities (SPLIA)
Modern buildings can be antiquities. SPLIA works to preserve Long Island’s cultural heritage and historic environments.

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National and International Preservation Organizations

DOCOMOMO International
Founded in 1988, DOCOMOMO International organizes and promotes national working parties, publishes DOCOMOMO Journal, convenes international conferences every two years and more.

One of 54 national working parties chartered by DOCOMOMO International. Represents the U.S. on the DOCOMOMO Council, overseas membership and formation of chapters in the U.S. and more.

National Trust for Historic Preservation
The largest nonprofit preservation advocacy organization in the U.S., the Trust has made it part of its mission to unite emerging popular interest in preserving the recent past.

Cultural Landscape Foundation
The only nonprofit foundation in the U.S. dedicated to increasing the public’s awareness of irreplaceable cultural landscapes, the Foundation focuses much of its attention on the identification and protection of Modern landscape design.

World Monuments Fund
An independent organization devoted to saving the world’s most treasured places. Check out the "Modernism at Risk" site to learn about endangered Modern movement buildings around the world.

US ICOMOS - International Council on Monuments and Sites
Fosters heritage conservation and historic preservation at the national and international levels.

Recent Past Preservation Network
Get updated preservation news coverage on Modern landmarks nationwide.

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Architect/Designer-specific Organizations

Frank Lloyd Wright Building Conservancy
A Chicago-based international preservation organization dedicated to facilitating the preservation and maintenance of structures designed by Frank Lloyd Wright.

Frank Lloyd Wright Foundation
A nonprofit organization focused on conserving the work of Frank Lloyd Wright and advancing the principles of organic architecture.

Paul Rudolph Foundation
The Paul Rudolph Foundation promotes the knowledge, understanding and preservation of Paul Rudolph's work in the context of 20th century architecture and design.

Manitoga/The Russel Wright Design Center
The Center oversees Russel Wright's home, studio and woodland garden at Manitoga (near Garrison, NY) as part of its mission is to preserve the legacy of pioneer designer Russel Wright and share this legacy with professionals and the public.

Isamu Noguchi Museum
The Museum presents a comprehensive collection of the artist’s work including materials related to Noguchi’s site-specific installations at noteworthy mid-century buildings.

Neutra Institute for Survival Through Design
Advocates for the identification and protection of the architecture of Richard and Dion Neutra.

John Lautner Foundation
Advocates for the identification and protection of the architecture of John Lautner.

James Rose Center
The James Rose Center for landscape architecture research and design seeks to preserve the work of James Rose, landscape theorist and practitioner of the Modern period.

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Modern Architecture Online Image Resources

Great Buildings Online

Index to Architectural Archives
Prepared by the Avery Architectural & Fine Arts Library of Columbia University.

Fine Art Photography by Pedro E. Guerrero


Esto Photographics
A photography agency site created around the photo archive of Ezra Stoller.

Maynard Parker Archive

Historic American Buildings Survey/Historic American Engineering Record/Historic American Landscapes Survey, 1933-Present

Mary Ann Sullivan's Digital Imaging Project

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DOCOMOMO US Chapters (with websites)

Western Washington

North Texas



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Association for Preservation Technology International (APT)
A cross-disciplinary membership organization promoting the best technology for conserving historic structures. Find bulletins pertaining to advance practices in the conservation of Modern structures.

Modernism Magazine
The only magazine devoted to the design movements of the 20th century, from Art Deco to Mid-century, Pop and Post-Modern.

Society of Architectural Historians
The mission of the Society is to advance knowledge and understanding of the history of architecture, design, landscape and urbanism worldwide.

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