Swimming Pools & Spas in Delaware (2026)
9 rules on the books across Delaware, 4 cities and counties. Select a rule to read the full details.
Severity: Few Restrictions · Light Restrictions · Some Restrictions · Significant Restrictions · Heavy Restrictions
Pool Permits
Building and electrical permits required before installing a pool, including the depth and size thresholds that trigger them, and where above-ground and inflatable pools fall in or out of the rules.
Kent County
Some RestrictionsKent County requires a building permit for most residential pools, exempting only small above-ground prefabricated…
Read full rule →New Castle County
Some RestrictionsNew Castle County requires a building permit for any above-ground or portable swimming pool connected to a circulation…
Read full rule →Sussex County
Some RestrictionsA residential swimming pool counts as a regulated structure in Sussex County, so building it requires a permit from the…
Read full rule →Wilmington
Some RestrictionsWilmington treats any residential swimming pool, above-ground or in-ground, as an accessory structure: a rear-yard pool…
Read full rule →Fencing & Safety Requirements
Mandatory barriers around pools, spas, and hot tubs, minimum heights, self-latching gate specs, and the alarm, cover, and anti-entrapment rules that ride along with them.
Delaware: statewide
StatewideSignificant RestrictionsDelaware requires every public pool deeper than four feet to keep a lifeguard on duty whenever it is open. Pools larger…
Read full rule →Kent County
Some RestrictionsKent County adopts the International Swimming Pool and Spa Code and requires a compliant barrier around every pool and…
Read full rule →New Castle County
Some RestrictionsNew Castle County adopts the 2024 International Swimming Pool and Spa Code as its pool barrier standard, with local…
Read full rule →Sussex County
Some RestrictionsEvery swimming pool in unincorporated Sussex County must be protected by a safety fence or barrier at least 4 feet…
Read full rule →Wilmington
Some RestrictionsWilmington adopts the 2018 International Swimming Pool and SPA Code by reference, setting the safety, barrier, and…
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