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City Hall: 751 W. 4th St. | Kuna, Idaho 83634 | Ph: 208-922-5546

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What are the size requirements for stairways and handrails?
Stairways and handrails have to follow these guidelines:
  • Minimum headroom is 80 inches
  • Maximum rise is 7 ¾ inches
  • Minimum rise is 4 inches
  • Minimum run is 10 inches
  • Minimum headroom is 6 feet 8 inches
  • Minimum width is 36 inches finished
  • Handrails required on stairways of four or more risers and shall be located from 34 to 38 inches above tread nosing
  • Minimum tread is 7½ inches at 12-inch depth on circular stairs from narrowest point

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1. Can homeowners perform work themselves?
2. Where will smoke detectors and carbon monoxide detectors be placed?
3. What are the size requirements for stairways and handrails?
4. What requires a building permit and inspection in residential construction?
5. What are the size requirements for guardrails?
6. What are the requirements for emergency exit windows?