Middleton, WI Swimming Pools & Spas: Pool Permits (2026)
Swimming pool permit rules in Middleton, WI, also covering above-ground pools, in-ground pools, and spa installations, set fencing, barrier, alarm, and inspection requirements.
Key Facts
- Permit required
- Building permit before construction
- Applying authority
- Building Inspector
- Site plan trigger
- Excavation below 1 foot of grade
- Administrative approval districts
- SR-L, SR-M, SR-H, MH-D, TR-D, TR-F
- Exempt pools
- Storable, disassemblable pools
Summary
Middleton requires a building permit before constructing, altering, or improving a private swimming pool, with site plan review triggered once excavation goes below one foot, though disassemblable storable pools are exempt.
Any pool requiring excavation below one (1) foot of the existing grade is subject to site plan review. For a pool in an SR-L, SR-M, SR-H, MH-D, TR-D, TR-F zoning district, the site plan may be approved administratively by the Zoning Administrator. ... A building permit shall be secured prior to the commencement of construction or erection of a private or residential swimming pool, or on any alterations, additions, remodeling, or other improvements. Plans, specifications, and pertinent explanatory data shall be submitted to the Building Inspector at the time of application. ... Non-filtered storable swimming or wading pools that are so constructed that they may be readily disassembled for storage and reassembled to their original integrity are exempt from the provisions of this Section.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Municipal Code: Supplement 3 Update 1).
Full Breakdown
42(4) requires a building permit be secured before the commencement of construction or erection of a private or residential swimming pool, or before any alteration, addition, remodeling, or other improvement to one. Plans, specifications, and pertinent explanatory data must be submitted to the Building Inspector when applying. 42(3) adds a site-plan-review layer for larger projects: any pool requiring excavation below one foot of existing grade is subject to site plan review, though for a pool in the SR-L, SR-M, SR-H, MH-D, TR-D, or TR-F residential districts, the Zoning Administrator can approve that site plan administratively rather than sending it to the Plan Commission.
42(6) conditions issuance on compliance with state regulations and City ordinances for construction methods, plumbing (including a ban on draining pool water into the sanitary sewer or onto neighboring property without City Engineer approval for storm-sewer drainage), and electrical work. 42(5) exempts non-filtered, readily disassembled storable or wading pools, decorative ponds under 36 inches deep, and spas or hot tubs with lockable, secured tops from the permitting section entirely. 42(7).
Violations & Fines
Building, expanding, or remodeling a residential swimming pool without a Building Inspector permit is a code violation, and draining pool water into the sanitary sewer system or onto an adjoining property without City Engineer-approved storm sewer provisions violates § 10.06.42(6)(b), each subject to enforcement by the Building Inspector.
Frequently Asked Questions
Do I need a permit to install an in-ground pool in Middleton?
Is a site plan required for every pool?
Sources & Official References
Other rules in Middleton
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Pool Permits in Nearby Cities
How other cities in Dane County handle pool permits.