Wyandotte County, KS Building Setbacks & Zoning: Lot Coverage Limits (2026)
Key Facts
- Max accessory building size
- 1,000 sq ft
- Max rear-yard coverage
- 30 percent
- Side/rear setback
- 3 feet minimum
- Alley setback
- 2 feet minimum
- Corner lot side-street setback
- 20 feet
- Governing section
- UG Code § 27-609(2)
Summary
Wyandotte County caps any detached accessory building, garage, shed, or carport in a single-family or two-family district at 1,000 square feet and 30 percent of the required rear yard under UG Code § 27-609(2), with side, rear, and alley setbacks spelled out in the same subsection.
(2)Accessory buildings (garages, carports, tool sheds, etc.). For any dwelling unit there may be permitted a detached accessory building. Such building shall not be located, in front of the house, less than two feet from any alley, nor closer than three feet to any side or rear property line. In the case of corner lots, a detached accessory building shall not be within 20 feet of the side street. The total area of such detached accessory building shall not exceed 1,000 square feet or cover more than 30 percent of the required rear yard.
Full Breakdown
" That 30 percent figure is measured against the rear yard the zoning district requires, not the whole lot, so a bigger required rear yard buys more buildable accessory footprint up to the 1,000-square-foot ceiling. The same subsection layers on placement setbacks: a detached accessory building must sit at least two feet from any alley, at least three feet from any side or rear property line, and, on a corner lot, at least 20 feet from the side street. Buildings over 120 square feet on lots under three acres also have to match the house's exterior finish, real siding, brick, stone, or stucco rather than corrugated metal or bare concrete block, with a narrow exception for factory-painted metal that matches the primary structure.
Structures that predate April 2008 and already sat in a side or rear yard are grandfathered against these standards, verified against 2008 aerial photography, while anything built after that date needs written, notarized sign-off from abutting neighbors to keep a nonconforming setback, or a Board of Zoning Appeals variance if it sits in the front yard.
Violations & Fines
An accessory building that exceeds 1,000 square feet, covers more than 30 percent of the required rear yard, or sits closer to a property line than the two-, three-, or 20-foot minimums is a zoning violation subject to code enforcement action, and the owner cannot cure it after the fact except by seeking a Board of Zoning Appeals variance or, for post-2008 setback encroachments, notarized approval from the affected neighbor.
Frequently Asked Questions
What is Wyandotte County's lot coverage limit for a shed or garage?
How close to my property line can I build a detached garage?
Can an older shed that doesn't meet the setback stay in place?
Sources & Official References
Other rules in Wyandotte County
Compare Wyandotte County to another location·View the Kansas building setbacks & zoning overview
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