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

Provides consulting and analytical services, including materials analysis.

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

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.

EHT Traceries, Inc. is research and consulting firm specializing in architectural history and historic preservation.

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.

A nationwide consulting service that selects historically appropriate color schemes for homes and commercial building exteriors.

Strengthens existing fragile plaster in ceilings and walls in historic buildings.

New England business specializing in historic preservation. Projects include historically-sensitive additions, historic barn restoration, and custom millwork and woodworking.

Stained glass consultants advise on stained glass conservation issues.

Residential restoration consultants dedicated to restoring fine homes to their original spirit.

An independent practice offering a wide range of professional services in heritage conservation, based in New York City.

A firm documenting and researching historical monuments in the Austrian Tyrol, as well as advising on and supervising restoration. Team, projects. In English, German and Italian.