Marathon County, WI Swimming Pools & Spas: Pool Permits (2026)
Swimming pool permit rules in Marathon County, WI, also covering above-ground pools, in-ground pools, and spa installations, set fencing, barrier, alarm, and inspection requirements.
Key Facts
- Permit trigger depth
- Over 1.5 feet of water
- Allowed location
- Side or rear yard only
- Min. house setback
- 15 feet allowed
- Emergency access path
- 15 feet wide, kept clear
Summary
Any Marathon County pool holding more than 1.5 feet of water counts as a structure needing a zoning permit, and it must go in a side or rear yard with a clear 15-foot emergency-access path to the house.
Public or private in-ground or above-ground swimming, wading or other pools containing over one and one-half feet of water depth shall be considered as structures for the purpose of permits, shall not be located in front yards but may be located in side and/or rear yards subject to location regulations pertaining to accessory structures. Pools may be constructed within 15 feet of a principal structure as long as there is adequate space for emergency services to access the rear yard. Such access shall be no less than 15 feet in width between the principal structure and any lot obstruction
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 59).
Full Breakdown
County zoning treats any public or private in-ground or above-ground pool over one and a half feet of water depth as a structure for permitting purposes, which triggers the standard zoning-permit process before construction. Pools can't go in a front yard, only side or rear yards, following the same location rules as other accessory structures. A pool can sit as close as 15 feet to the house, but a clear path at least 15 feet wide must remain between the house and any obstruction, including accessory buildings, utility boxes, septic components, wetlands, or steep slopes, so emergency responders can reach the back yard. This applies only in towns that adopted county zoning, and shoreland-area pools have additional Chapter 22 requirements.
Violations & Fines
Building a pool without the required zoning permit, in a front yard, or without the mandated emergency-access clearance is a zoning violation; enforcement carries a forfeiture under Chapter 25.04 plus prosecution costs, with each day a separate offense (§ 17.807).
Frequently Asked Questions
Do I need a permit to install a pool in Marathon County?
Can a pool go in the front yard?
Sources & Official References
Other rules in Marathon County
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