The Roofing Book

Permitting Authorities / City of Olathe - Building Codes Division

City of Olathe - Building Codes Division

Adopted code

The permitting authority for the City of Olathe, Kansas, the Johnson County seat in the Kansas City metropolitan area. The Building Codes team, part of the Community Development Division, reviews plans, issues building permits, and performs inspections for residential and commercial construction within city limits, and publishes roofing-specific guidance for residential reroofing.

Jurisdiction
City of Olathe, Kansas
Jurisdiction type
city
Address
100 E. Santa Fe Street, Olathe, KS 66061
Contact
  • url: https://www.olatheks.gov/government/building-codes-permits
  • phone: 913-971-6200
  • email: [email protected]
Roofing permit required
false
Contractor registration required
true
Registration details
  • license: The city's Residential Building Permits page states: "Contractors must hold valid licenses with Johnson County and register with the State of Kansas to install roofing." Roofing contractor licensing runs through the Johnson County Contractor Licensing program plus the State of Kansas roofer registration, rather than a separate city-issued roofing license.
Permit process note
The city's Residential Building Permits page states under "Roofing": "Permits are not required for reroofing or repairs down to the roof deck for residential one family dwellings, two-family dwellings, or townhomes but they must be installed and constructed per the current adopted International Residential Code (IRC) and Olathe Municipal Code. Additionally, City inspections are not required." The page summarizes common reroofing code requirements: an ice barrier extending not less than 24 inches inside the exterior wall line (IRC R905.1.2), crickets on the ridge side of chimneys or penetrations more than 30 inches wide (IRC R903.2.2), sidewall base flashing (IRC R905.2.8.3), drip edge at eaves and rakes (IRC R905.2.8.5), replacement of rusted or deteriorated flashings (IRC R908.5), minimum vent area of 1/150 of the vented space (R806.2), and roof recovering not permitted over water-soaked or deteriorated coverings, over slate, clay, cement or asbestos-cement tile, or where two or more applications of roofing are already in place (R908.3.1.1).
Adopted code
The city's Building Codes & Permits page lists the codes adopted September 1, 2019: the 2018 International Building, Residential, Existing Building, Plumbing, Mechanical, Fuel Gas, Energy Conservation, Swimming Pool and Spa, Property Maintenance, and Fire Codes (Ordinances 19-27 through 19-37) and the 2017 National Electrical Code (NFPA 70). A revision to the 2018 International Residential Code for One- and Two-Family Dwellings was adopted June 23, 2026 (Ordinance 26-31).

Local roofing hub

Roofing in Olathe, KansasCity hub

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Sources