Shawnee County, KS Building Safety: Building Permits (2026)

Sec. ' That threshold sits alongside a companion timing rule in Sec. 03(a)(2): no accessory building may be constructed or established more than 120 days before the principal building or use it serves is completed. The regulations also cap how big a permitted accessory building can get once it clears the permit line. Under Sec. 5% of lot area between three and ten acres, and 6,000 square feet on parcels over ten acres, with a maximum 16-foot sidewall height in every case. A property owner who wants to exceed those caps can seek an exception from the Board of Zoning Appeals under Article XXXIV if the larger structure is shown to be compatible with the neighborhood in design, location and size, and proportional to the principal building, parcel and street frontage (Sec.

03(a)(4)b). Existing accessory buildings that predate the current limits are grandfathered under Sec. 03(a)(4)c and may be rebuilt after fire, explosion, act of God, or public enemy destruction if the original structure complied with the rules in force when it was built. R. Resolution 2008-3, Sec. R. Resolution 2009-3, effective November 5, 2009.