Building Code & Design Information

Building Codes

The City of Lafayette has adopted the following model codes:

  • International Building Code 2015
  • International Energy Conservation Code 2015
  • International Fuel Gas Code 2015
  • International Mechanical Code 2015
  • International Plumbing Code 2015
  • International Residential Code 2015
  • National Electrical Code 2020
  • Roofing Code Handout/Checklist
  • Reroof Inspection Requirements
  • The City of Lafayette requires a permit for any roof work requiring one square or more of shingles. However, we will not specify whether or not an entire reroof is required.
  • 2015 International Residential Code and International Building Code 
  • Amendment: Class 4 Impact Resistant Shingles are required. Documentation or packaging of Class 4 IR Shingles is required for inspection along with the Inspection Record Card - effective March 15, 2021.
  • Drip edge/rake metal is required
  • Ice and water shield is required - effective March 15, 2021
  • Asphalt roofs shall have no more than two layers
  • Shingles must comply with ASTM D7158 (Class G or H) or shingles must comply with D3161 Class F
  • Building Inspection Information/Checklist
  • Procedure for Contemporaneous Reviews of Electrical and Plumbing Licenses

Design Information

  • Frost depth: 36 inch frost depth
  • Snow load: 30 pounds / square foot roof and ground
  • Wind speed: 105 mph at 3 second gust, single family
    Risk Category 1 Vult = 120 mph
    Risk Category 2 Vult = 135 mph
    Risk Category 3, 4 Vult = 145 mph

Plan Sizes

  • Accessory dwelling unit plans: no larger than 24 inches by 36 inches
  • Commercial tenant finish plans: no larger than 24 inches by 36 inches
  • New single-family and multi-family plans: no larger than 24 inches by 36 inches
  • New commercial building plans: no larger than 24 inches by 36 inches
  • Residential remodel plans: no larger than 11 inches by 17 inches

Old Town Design Resources

Other Requirements / Resources