Wilmington, DE Swimming Pools & Spas: Pool Permits (2026)
Swimming pool permit rules in Wilmington, DE, also covering above-ground pools, in-ground pools, and spa installations, set fencing, barrier, alarm, and inspection requirements.
Key Facts
- Rear yard coverage cap
- 40% of required rear yard
- Side yard setback
- 10 feet from house and lot line
- Governing code
- Wilmington City Code § 48-495
- Enforcing agency
- Dept. of Licenses and Inspections
Summary
Wilmington treats any residential swimming pool, above-ground or in-ground, as an accessory structure: a rear-yard pool can't cover more than 40% of the required rear yard, and a side-yard pool must sit at least 10 feet from both the house and the lot line.
A swimming pool accessory to a residential building may be constructed in any district; provided, that: (1)If located in a rear yard it shall not cover more than 40 percent of the required rear yard area; and(2)It may be located in a side yard if the distances from the building and the side lot line to the pool are each not less than ten feet.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 72).
Full Breakdown
Wilmington's zoning code lets homeowners put a swimming pool, above-ground, portable, or in-ground, in any residential district as an accessory use, but placement is capped. In a rear yard, the pool can't occupy more than 40 percent of the required rear yard area. Put it in a side yard instead and it must clear both the house wall and the side lot line by at least 10 feet. Pools aren't on the city's exempt-from-permit list, so a building permit under the adopted International Residential Code is also required before installation, on top of meeting this yard rule.
Violations & Fines
Non-compliant placement is a zoning violation enforceable by the Department of Licenses and Inspections, which can order the pool relocated or removed and require a permit before it's filled or used.
Frequently Asked Questions
Does an above-ground pool need a permit in Wilmington?
Can I put an above-ground pool in my side yard?
Sources & Official References
Other rules in Wilmington
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