St. Louis Pool Permit

What's Required in St. Louis

• Permit required for any pool over 24 inches deep.
• Mandatory 48-inch high safety fence with self-latching gates.
• Pool must be at least 10 feet from the rear property line.
• Electrical permit mandatory for bonding, grounding, and pump wiring.
• Plumbing permit required for drainage and fill lines.
• Alarms required for any house doors with direct pool access.

Above-Ground vs. In-Ground Pool Permits in St. Louis

In St. Louis, both above-ground and in-ground pools almost always need a permit — but the requirements differ. An in-ground pool always requires a building permit, plus electrical and plumbing permits, because of the excavation, structural shell, and bonded equipment involved. An above-ground pool needs a permit once it’s deeper than 24 inches; shallower seasonal pools are generally exempt from the building permit, though safety rules can still apply. Either way, a code-compliant safety barrier — a fence, or the pool’s own walls plus a self-closing, self-latching gate — and electrical bonding of pumps and lights are inspected before final approval.

Pool Permit Renewal in St. Louis

Most homeowners never “renew” a St. Louis pool permit the way you’d renew a license. A residential pool building permit covers the construction work and closes once the pool passes its final inspection. What can expire is an unused or unfinished permit — many building departments void one if work hasn’t started or been inspected within a set window (often 6 to 12 months), and you’d then re-apply or request an extension from the Building Division. Some cities also require a separate annual operating permit for public or shared pools, though that rarely applies to a single-family backyard pool. When in doubt, confirm the current rule and any renewal fee with the Building Division.

How to Get a Pool Permit in St. Louis

Frequently Asked Questions