Mosinee, WI Swimming Pools & Spas: Pool Permits (2026)
Swimming pool permit rules in Mosinee, WI, also covering above-ground pools, in-ground pools, and spa installations, set fencing, barrier, alarm, and inspection requirements.
Key Facts
- Permit required from
- Building inspector
- Must submit
- Written application plus plans/specs
- Fee
- Set by the common council
- Work start
- Barred until permit issued
- Min lot-line clearance
- 6 ft (water line)
- Exempt
- Small storable pools (§ 42-789(b))
Summary
Anyone building, altering or remodeling a private swimming pool in Mosinee must first get a swimming pool building permit from the building inspector, submitting plans and specifications along with a council-set fee, and no work can start before the written permit is issued, under § 42-789(c).
(c)Permit required. Before work is commenced on the construction or erection of private or residential swimming pools or on any alterations, additions, remodeling or other improvements, an application for a swimming pool building permit to construct, erect, alter, remodel or add must be submitted in writing to the building inspector. Plans and specifications and pertinent explanatory data should be submitted to the building inspector at the time of application. No work or any part of the work shall be commenced until a written permit for such work is obtained by the applicant. A fee as set by the council from time to time shall accompany such application.
Full Breakdown
Section 42-789(c), "Permit required," applies before any work begins on the construction, erection, alteration, remodeling or other improvement of a private or residential pool: the owner must submit a written application for a swimming pool building permit to the building inspector, along with plans, specifications and other explanatory data, and pay a fee the common council sets from time to time. The subsection is explicit that no work of any kind may start until the written permit is actually obtained. Subsection (d) then attaches construction conditions the building inspector checks before issuing that permit: materials and methods must follow state regulations and all city ordinances, plumbing must include suitable drainage that never discharges into the sanitary sewer or onto a neighboring property, and electrical work for pool lighting or heating must conform to state and city electrical codes.
Subsection (e) layers on siting rules tied to the same permit: a pool can only go on a rear or side lot occupied by a principal building, never on a vacant lot, must sit no closer to a side or rear lot line than an accessory building is allowed, and its water line must clear every lot line by at least six feet. Small storable children's pools exempted under subsection (b) fall outside this permit requirement entirely, since that exemption covers "the provisions of this section" as a whole.
Violations & Fines
Starting pool work without the required permit, or without meeting the construction and setback conditions tied to it, is a zoning violation under § 42-67. The common council, zoning administrator, plan commission, or a specifically damaged property owner may sue to enjoin the work or require the structure brought into compliance; a conviction carries a forfeiture with a $100 statutory minimum plus any additional penalty under § 1-13.
Frequently Asked Questions
Do I need a permit before installing an in-ground pool in Mosinee?
Is there a fee for the pool permit?
Can I start digging before the permit comes through?
Does a small above-ground kiddie pool need this permit too?
Sources & Official References
Other rules in Mosinee
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Pool Permits in Nearby Cities
How other cities in Marathon County handle pool permits.