Environmental Rules in Oldham County, KY (2026)
4 rules for unincorporated Oldham County, Kentucky.
Verified from official government sources
Stormwater Management
Unincorporated Oldham County requires a reviewed stormwater management plan and permanent BMPs for any development disturbing an acre or more. Design storms, a water-quality volume standard and a recorded maintenance agreement are mandatory, with violations fined $75 to $150 per day.
Oldham County Post-Construction Stormwater Rules
Some RestrictionsOldham County Code §§ 154.03, 154.05
(B) Any development activity that involves land disturbance of one acre or more shall submit to the County Engineer, prior to development, a stormwater management plan showing location of post-construction best management practices (BMPs) prior to any construction activity. ... The WQv used for sizing green infrastructure BMPs shall be computed as follows: ... The drain time for all green inf...
Erosion Control
Unincorporated Oldham County requires a stormwater quality management permit and perimeter sediment control before any land disturbance of an acre or more begins. Permittees pay $100 per lot or acre in fees, and violations are a Class A misdemeanor up to $500 and 12 months.
Oldham County Construction Site Runoff Control
Some RestrictionsOldham County Code § 153.10
The person shall obtain from the county a permit prior to the initiation of any land-disturbing activities that result in the disturbance of one acre or more of land. ... The plan shall include erosion prevention and sediment control BMPs that, at a minimum, shall be as protective as Kentucky's general permit for stormwater construction sites (KYR100000).
Flood Zones
Any development in a special flood hazard area of Oldham County needs a development permit from the Floodplain Administrator before work starts. Building without one, or violating a permit's conditions, is a misdemeanor civil offense carrying at least a $500 fine and up to 60 days in jail.
Floodplain Development Rules in Oldham County, KY
Significant RestrictionsOldham County Code §§ 151.032, 151.999
§ 151.032 ESTABLISHMENT OF DEVELOPMENT PERMIT. ... (A) A development permit shall be required in conformance with the provision of this chapter prior to the commencement of any development activities in the special flood hazard areas (SFHAs). ... (B) Application for a development permit shall be made on forms furnished by the Floodplain Administrator. ... § 151.999 PENALTY. Violation of the pro...
Flood Elevation Requirements
In unincorporated Oldham County, Kentucky, new construction and substantial improvements in special flood hazard areas must have the lowest floor elevated at least two feet above the base flood elevation. The Floodplain Administrator enforces the standard, and violators face a minimum $500 fine.
Oldham County Flood Elevation Freeboard Rule
Some RestrictionsOldham County Code § 151.066
(A) Residential construction. New construction or substantial improvement of any residential structure (or manufactured home) shall have the lowest floor, including basement, mechanical equipment and ductwork elevated no lower than two feet above the base flood elevation. ... (3) In all other zones, the lowest floor shall be elevated two feet above the base flood elevation. Upon the complet...
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