Olathe, KS Building Safety: Fire Sprinkler Requirements (2026)
Key Facts
- Townhouses (3+ units)
- Sprinklers required
- Single/two-family homes
- Sprinklers optional
- Design standard
- NFPA 13D or Section P2904
- Existing townhouses
- No retrofit on remodel
- Max penalty
- $2,500 fine or 90 days jail
Summary
Olathe requires automatic fire sprinklers in new townhouses of three or more connected units, but leaves single- and two-family homes sprinkler-free: installation there stays voluntary under the amended IRC.
R313.1 Townhouse automatic fire sprinkler systems. An automatic residential fire sprinkler system shall be installed in new townhouses containing three or more connected dwellings. Exception: An automatic residential fire sprinkler system shall not be required where additions or alterations are made to existing townhouses that do not have an automatic residential fire sprinkler system installed. R313.1.1 Design and installation. Automatic residential fire sprinkler systems for townhouses shall be designed and installed in accordance with Section P2904 or NFPA 13D. R313.2 One- and two-family dwellings automatic fire sprinkler systems. Automatic residential fire sprinkler systems are not required in one- and two-family dwellings; however, systems may be provided on a voluntary basis. R313.2.1 Design and installation. Where provided, automatic residential fire sprinkler systems for one- and two-family dwellings shall be designed and installed in accordance with Section P2904 or NFPA 13D. (Ord. 19-28 § 14, 2019; Ord. 12-42 § 2, 2012.)
Official source re-checked September 8, 2026: no newer edition of the code had been published (publisher’s edition: current through Ordinance 26-39, passed July 21, 2026).
Full Breakdown
Olathe amended IRC Section R313 so that R313.1 mandates an automatic residential fire sprinkler system in every new townhouse development containing three or more connected dwellings, designed to NFPA 13D or Section P2904 standards. Existing townhouses without sprinklers that undergo additions or alterations are exempt from adding them. By contrast, Section R313.2 makes clear that stand-alone one- and two-family dwellings are not required to install sprinklers: systems there remain voluntary. The rule governs new construction citywide in Olathe, Johnson County, Kansas, adopted by Ordinance 19-28 and still in force through the 2026 code update.
Violations & Fines
Building a qualifying 3+-unit townhouse without required sprinklers violates the adopted residential code: a misdemeanor under Section R113.4 punishable by up to a $2,500 fine or 90 days in jail.
Frequently Asked Questions
Does Olathe require fire sprinklers in a single-family home?
What triggers a mandatory sprinkler system in Olathe?
Sources & Official References
Other rules in Olathe
Compare Olathe to another location·View the Kansas building safety overview
See something wrong?
Help us keep this page accurate. If you notice an error or outdated information, let us know.
Fire Sprinkler Requirements in Nearby Cities
How other cities in Johnson County handle fire sprinkler requirements.