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Warren, MI Swimming Pools & Spas: Fencing & Safety Requirements (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Trigger depth
25 inches or more of water
Minimum fence height
4 feet, Section 4D.34(b)
Gate requirement
Self-closing, self-latching, lockable
Swimming pool enclosures
Governed by state building code, § 4D.34(a)
Waiver available
If entire premises already fully enclosed

Summary

Warren requires any reflector pool, fish pond, lily pond or other artificial body of water 25 inches deep or more to be enclosed by a fence at least four feet high with a self-closing, self-latching gate, under Zoning Ordinance Section 4D.34(b). Swimming pools themselves are governed by the state construction code's enclosure standards, which Section 4D.34(a) expressly makes applicable citywide.

Section 4D.34. - Fence required for pools and ponds. a.Swimming pools. All regulations of the applicable building code provisions shall apply to swimming pools and the method of enclosing the swimming pool for the safety of the public. b.Reflector pools and ponds. For the protection of the general public, any reflector pool, fish pond, lily pond or other artificially-constructed body of water which contains twenty-five (25) inches or more of water in depth at any point shall be enclosed by a fence not less than four (4) feet in height. The fence gates shall be self-closing and latching, with the latch on the inside of the gate not readily accessible for children to open. Fence gates shall be capable of being securely locked.

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 102).

Full Breakdown

34, titled 'Fence required for pools and ponds,' splits its coverage in two. Subsection (a) states that all regulations of the applicable building code provisions apply to swimming pools and to the method of enclosing a swimming pool for public safety, so the enclosure standard for an in-ground or above-ground swimming pool comes from the state construction code that the city has adopted, rather than a separate barrier-height number written into the zoning ordinance itself. Subsection (b) then sets an independent, specific rule for reflector pools, fish ponds, lily ponds, or any other artificially constructed body of water holding twenty-five inches or more of water at any point: it must be enclosed by a fence not less than four feet high.

The gate on that fence has to be self-closing and self-latching, with the latch mounted on the inside of the gate where a small child can't easily reach it, and the gate must also be capable of being securely locked. The Division of Buildings and Safety Engineering can waive the pond or reflector-pool fencing requirement, but only if the entire residential premises is already fully enclosed and the division inspects and approves that enclosure as an adequate substitute after a site visit.

Violations & Fines

Failing to enclose a covered pond or reflecting pool that holds 25 or more inches of water, or installing a gate that doesn't self-close and self-latch, violates Section 4D.34(b) and is enforceable as a zoning infraction; the Division of Buildings and Safety Engineering can require the fence be installed or repaired, and a municipal civil infraction under Code § 1-8 runs $100 to $1,000 per violation, with each day of noncompliance a separate offense.

Frequently Asked Questions

Does my backyard koi pond need a fence in Warren?
Yes, if it holds 25 inches or more of water at any point. Section 4D.34(b) requires reflector pools, fish ponds, lily ponds, and similar artificial water features that deep to be enclosed by a fence at least four feet high with a self-closing, self-latching gate that a child can't easily open.
What fence standard applies to an actual swimming pool?
Section 4D.34(a) doesn't set its own number for swimming pools; instead it makes all applicable building code provisions, including the enclosure method required for public safety, control the pool's barrier. That routes swimming pool fencing to the state construction code Warren has adopted rather than a separate zoning ordinance figure.
Can the pond fencing requirement be waived?
Yes, but only in one circumstance: if the entire residential premises is already enclosed, the Division of Buildings and Safety Engineering may waive the separate pond or reflector-pool fence after inspecting and approving the existing enclosure as adequate for public safety.

Sources & Official References

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