Established 1966
Preserving America’s Architectural Heritage
The National Park Service, a bureau of the U.S. Department of the Interior, oversees the federal recognition of the Nation’s most significant historic sites through the National Register of Historic Places and the National Historic Landmarks program. Established by the National Historic Preservation Act of 1966, these initiatives are part of a coordinated national effort to identify, evaluate, and promote the preservation of America’s historic, cultural, and architectural heritage.
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Historic Significance
Properties associated with significant events, or periods that shaped American history.
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Community Value
Buildings that contribute to the character and identity of local communities.
100,000 +
Listed Properties
50
States Covered
60
Years of History
~ 2,600
Historic Landmarks
Comprehensive Database Features
Our advanced search and filtering system helps you discover historic properties with detailed information about their significance, condition, and preservation status.
Advanced Search
Search by building name, location, architect, or architectural style with intelligent filtering.
Smart Filters
Filter by state and county to find exactly what you need.
Location Data
Information including precise locations, counties, and regional context.
Official Records
Direct links to official NRHP documentation and detailed preservation records.
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Structural Engineering
Reinforcement & Rehabilitation:
- Reinforcement calculations for facades and cantilevers
- Design of concealed supports and brackets
- Aesthetic integration without altering the historic envelope
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Inspections & Recertifications
Assessment & Compliance:
- Diagnosis of structural pathologies and corrosion
- Comprehensive recertification plans
- Documentation and coordination with authorities
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Specialized Components
Tailored Solutions:
- Custom railings, stairs, and handrails
- Reinforced doors and windows
- Steel gates and auxiliary structures
