Experts in historic restoration, conservation, and design.

We specialize in the preservation of art, architecture, and artifacts, and have contributed to the restoration and conservation of many of our country’s most significant and iconic masterpieces. From conceptual planning, surveys, and condition assessments to the implementation of conservation treatments, we provide custom solutions for complex interior and exterior heritage preservation projects.

Our conservators combine technology with material and chemical science to advance historic preservation techniques in the industry. Guided by the American Institute for Conservation (AIC), the Secretary of the Interior’s Standards for Historic Preservation, the International Council on Monuments and Sites (ICOMOS), and the International Centre for the Study of the Preservation and Restoration of Cultural Property (ICCROM), our conservation work is implemented at the highest standard under the supervision of our 2 AIC Fellows and 10 Professional Associates.

Condition Assessments

Investigate and understand the cause of deterioration before developing a conservation or maintenance plan.

Testing & Analysis

Our experts probe and examine presence, composition, and condition of materials, finishes, and color palettes.

Conservation Treatments

Extend the existence of a building, object, or work of art with customized conservation treatments.

A safer, less invasive, and more environmentally friendly cleaning technique for historic materials.

Quality Control

We guide establishing treatment protocols and ensure the highest conservation standards are met throughout the project.

Plaster Conservation

Ensuring that plaster substrates, ornament, and artwork are preserved and protected from future deterioration.

Mural Conservation

Prevent irreversible damage by addressing the surface and substrate without altering the original.

Metal Conservation

Mitigating treatments are guided by metalwork techniques and the highest standards of conservation practices.

Some examples.

DC War Memorial

RMS Titanic Eccentric Strap

Los Angeles City Hall

Alexander Sterling Calder's Facade Statues

Assyrian Relief Panels

Atlantis Space Shuttle

Bailey Fountain

California Street Sculptures

Chicago Union Station

Hurricane Damage Assessment & Disaster Response

James Farley Post Office

Manhattan Surrogate’s Court

United Nations Building

U.S. Capitol Dome

New Mexico Museum of Art

EverGreene Has Restored 38 U.S. Capitols

The 50 United States capitols were built over 150 years, representing a broad spectrum of techniques, styles, materials, and artistic finishes.

Laser Cleaning at the U.S. Capitol

Laser cleaning at the U.S. Capitol on the carved marble cornice, columns, pilaster capitals, windows, and door surrounds.

Revitalizing Train Stations Across America

Since 1995, EverGreene has continued to work on the restoration and preservation of America’s historic passenger train stations.

Preservation And Restoration Of Historic Facades

The preservation and restoration of historic facades always requires a custom approach that doesn't cause harm to the building fabric.