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Building Division - Design Information

The County's Minimum Elevation is 1,000 feet and the Maximum Elevation is 14,152 feet.  The following design elements must be considered for all projects in Siskiyou County.

  1. Roof design loads for site above 5,000 feet elevation -  Must be obtained from the Building DIvision.
  2. Flat roof snow load below 5,000 feet elevations -  McCloud, Mt. Shasta, Dunsmuir, Weed and Happy Camp, 60 pounds per square foot.  All Other areas, 40 pounds per square foot.
  3. Basic Wind Speed - 90 mph with 105 mph at 3-second gusts:  All areas, 20 pounds per square foot.
  4. Earthquake - the Seismic design category determination is site specific.
  5. Soils Site Class - Based on soils investigation
  6. Climate Zone 16 - for Energy compliance

Building Resource Center

Resource Title Downloadable File Type
Agricultural Exempt Info Letter and Certification Download File Certification
Agriculture Exception Waiver (Roof Live Load Reduction) Download File Other
Agriculture Exempt Building Permit Application Download File Application
Application for Encroachment Permit - Public Works Document Download File Application
Asbestos Demo/Renovation Permit Declaration (Commercial Only) Download File Permit
Building Permit Application Download File Application
Building Permit Application - Mobile Home Packet Download File Application
Building Permit Application Information Guidelines (General) Download File Guide
List of Local Engineers & Architects Download File Other
Mobile Home Data Collection Sheet Download File Other
Mobile Home on Foundation General Requirements Download File Guide
Mobile Home or Modular State Installation on Foundation Notice - 433A Download File Other
Mobile Home State Form Notice to Assessor on Installation Completion Download File Other
Mobile Home Tiedown Installation Certification Download File Certification
Owner-Builder Declaration Download File Application
Owner-Builder Notice Regarding Changes Download File Other
Owner-Builders' Handout Download File Other
Plan Example - Cross Section Download File Other
Plan Example - Exterior Elevations Download File Other
Plan Example - Floor Plan Download File Other
Plan Example - Foundation Plan Download File Other
Plan Example - Roof Framing Plan Download File Other
Plan Example - Typical Details Download File Other
Plan Example - Typical Plot Plan Download File Other
Siskiyou County Environmental Report, G.C. Section 65850.2 Download File Other