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

Two layers apply in Warren. First, the Michigan Residential Code, adopted under PA 230 of 1972 (MCL 125.1501), governs swimming pool, hot tub, and spa barriers through Appendix AG (formerly Appendix G). It applies to pools and spas capable of holding water more than 24 inches deep and requires: a barrier at least 48 inches high measured from outside grade; a maximum 2-inch gap to the ground; no opening that passes a 4-inch sphere; vertical members no more than 1-3/4 inches apart where horizontal rails are under 45 inches apart; pedestrian gates that open outward away from the pool, are self-closing and self-latching, with the release at least 54 inches above grade or, if lower, on the pool side at least 3 inches below the gate top; and audible alarms on house doors used as part of the barrier. Second, Warren Zoning Ordinance Article IV-D, §4D.34 (Fence required for pools and ponds) directs that all building code provisions apply to swimming pools, and adds that any reflector pool, fish pond, lily pond, or other artificially constructed body of water 25 inches or more deep must be enclosed by a fence not less than 4 feet high with a self-closing and latching gate, the latch on the inside and not readily accessible to children, and capable of being securely locked. If the entire premises of the residence is already enclosed, the dedicated reflector-pool fence may be waived by the Division of Buildings and Safety Engineering on inspection.