Topeka, KS Building Safety: Building Permits (2026)
Key Facts
- ≤6 inches tall
- Full yard, 12.5 ft from street
- 6-30 inches tall
- 3-ft side/rear, 12.5 ft street
- >30 inches tall
- Max 10 ft into yard
- Height measured
- From deck surface to grade
Summary
Topeka lets uncovered porches, decks, and patios encroach into required yards based on height, with taller structures facing a three-foot side/rear setback and a fixed street setback.
Uncovered horizontal structures such as porches, decks, stoops, and stair landings may encroach into required yards as follows: ... (2) Uncovered horizontal structures of a height greater than six inches and no greater than 30 inches may encroach into required yards but shall maintain a minimum three-foot setback from side and rear property lines and a minimum setback of 12.5 feet from street rights-of-way.
Official source re-checked September 8, 2026: no newer edition of the code had been published (publisher’s edition: current through Ordinance 20671, passed July 14, 2026).
Full Breakdown
TMC § 18.230.040(i) sets three height tiers for uncovered horizontal structures, porches, decks, stoops, and stair landings, built into a required yard. Structures six inches or shorter can fill the yard but must stay 12.5 feet from the street right-of-way. Structures between six and 30 inches need a three-foot side and rear setback plus the same 12.5-foot street setback. Anything taller than 30 inches can project only 10 feet into a front or rear yard, still 12.5 feet from the street. Height is measured from the walking surface to grade, per subsection (i)(4).
Violations & Fines
A deck or patio that breaches its height-based setback is a Title 18 zoning violation; the Planning Director enforces compliance under TMC 18.50.120 and can require removal or relocation before occupancy.
Frequently Asked Questions
How close to my property line can I build a Topeka deck?
Can a low patio go anywhere in my yard?
Sources & Official References
Other rules in Topeka
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