Olathe, KS Environmental Rules: Erosion Control (2026)
Key Facts
- Permit required
- Before any grading begins
- Small-project exemption
- Under 1 acre, under 50 cu. yd.
- Permit validity
- 2 years from issuance
- Enforcing office
- City Engineer, Public Works
Summary
Olathe requires a land disturbance permit before any grading begins; small projects disturbing under an acre, with minimal fill and no drainageway obstruction, are exempt from the permit requirement.
(A) No person is allowed to initiate any grading or other land disturbance activity without first obtaining a land disturbance permit. ... (1) Land disturbance activities that cumulatively disturb less than one (1) acre, and are not part of a larger common plan of development or sale which disturbs a cumulative area of one (1) acre or more, and involves fill of less than three (3) feet in height, and containing less than fifty (50) cubic yards, and does not create a slope in excess of three (3) horizontal to one (1) vertical, and does not obstruct a drainageway.
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 Municipal Code § 17.12.050 bars anyone from starting grading or other land disturbance without a City-issued land disturbance permit, which the City Engineer can grant for grading alone before a full stormwater management plan is submitted. Section 17.12.060 exempts activities that cumulatively disturb less than one acre (outside a larger common development), involve less than three feet of fill, under 50 cubic yards, no slope steeper than 3:1 horizontal-to-vertical, and that don't obstruct a drainageway, plus emergency repair work, agricultural uses, and disturbance already covered under a building permit's erosion control plan. A standard permit stays valid for two years.
Violations & Fines
Grading without a required Land Disturbance Permit violates Title 17 and is a misdemeanor punishable by up to a $500 fine; the City can also pursue injunctions or abate the violation as a nuisance (§17.02.110).
Frequently Asked Questions
Do I need a permit to grade my Olathe lot?
How long is an Olathe land disturbance permit good for?
Sources & Official References
Other rules in Olathe
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Erosion Control in Nearby Cities
How other cities in Johnson County handle erosion control.