The Preservation Planning Unit Resource Center (PPURC or “Perk”) is a great starting point for those conducting Historical & Architectural Surveys and for those nominating properties to the National Register of Historic Places and the Colorado State Register of Historic Properties.  The links below will help you find the pages you need on this web site

Architects/Builders in Colorado

• Architects of Colorado - Biographical Series
• Builders of Colorado - Biographical Series
• State Business Directory Guide to Colorado Architects, 1875 to 1950
• Finding Aid (PDF) with the following contents:

  - Colorado Architects/Designers (pages 1-41)
  - Architectural Styles, Types, Forms, Ornament & Movements (pages 42-43)
  - Colorado Builders/Manufacturers (pages 44-46)
  - Construction Materials (pages 47-48)
  - Colorado Developers (pages 49-52)
  - Colorado Engineers (page 53)
  - History/Historical Contexts (pages 54-60)
  - Resource Function Types (pages 61-62)

Historical Contexts

• National Register Multiple Property Documentation
• Historical Contexts

Historical & Architectural Survey

• Camera & Clipboard Newsletters
• Colorado Cultural Resources Survey Manual
• Colorado’s Historic Architecture & Engineering
• Community Assessment: Available Research Materials for Historical & Architectural Surveys A useful form to help you address resources to create a narrative about your property.
• Cultural Resource Survey Forms
• Post-World War II Residential History and Survey Materials
• Survey Report Examples

National Register and State Register Nominations

• Listed Properties by County
• Nomination Documents

Links to Outside Resources

• Useful Archaeology and Historic Preservation Links
• Useful Architectural Links

History Colorado Libraries and Collections

• Preservation Unit Library Contents (PDF)
• Heckendorn Collection
• Stephen H. Hart Library