Provides scientific analysis of historic finishes for the restoration of historic structures ranging from state capitol buildings to archaeological sites.

A studio crafting hand-carved architectural works in wood and marble for residential, commercial and historical interiors. This firm based in Valencia, California, works across the US.

Ambiente Risorse e Sviluppo (Environment, Resources and Development) is a consulting firm working all over the world.

Provides documentation of historic barns and outbuildings in the U.S. that includes condition reports, historical narratives, physical descriptions, architectural documentation, historic site plans, and State and National Register nominations.

Custom design contracting firm specializing in adaptive reuse of old barns into unique homes. Features portfolio, FAQs, news. Based in Carversville, PA.

A private consulting and research firm practicing preservation design, conditions assessments, materials science, and historic building documentation. Projects are in the northeastern United States.

Provides scholarly research, lectures, tours, and instructional materials on modern art and architecture for organizations, film-makers, and museums.

A women-owned research and consulting firm specializing in architectural history and historic preservation, based in Washington, DC.

An Italian company based in Florence offering geophysical surveys for archaeology and civil engineering, monitoring of structure micro-shifts, databases, geographic information systems. Company profile, examples.

Historic Preservation construction company offering services such as framing, plaster, window repair and interior finish work.