Adopted Codes for the City of Thornton
2009 International Building Code
2009 International Residential Code
2009 International Plumbing Code
2009 International Mechanical Code
2009 International Fuel Gas Code
2009 International Existing Building Code
2009 International Energy Conservation Code
2009 International Fire Code
2008 National Electric Code
2009 International Codes Amendments
For entire City Code (not just Building Codes) use the following link...
City of Thornton Code page