Delaware Pool Fence Requirements at a Glance

Fence Required?
LocalAll three counties require a 48-inch barrier; towns set their own.Sources verified September 2026
Minimum Height
48 inches (New Castle, Kent); 4 feet (Sussex)
Maximum Opening Size
4 inches under New Castle's code
Gate Requirements
Set by your county; self-closing, self-latching under the ISPSC in New Castle
Permit Required
From your county or town. Kent County: any pool that can hold 24 inches of water
Governing Code
County codes: New Castle (2024 ISPSC), Kent, Sussex (zoning code)
Always Verify With Your Local Authority

State and local laws change. This information reflects our best research as of September 2026, but you must confirm current requirements with your local building department before installing or modifying any pool barrier. In Delaware, your county or town sets the pool barrier rules.

Last reviewed: September 2026. Report an error →

Delaware Pool Barrier Law

Delaware has no statewide pool barrier rule. Each of its three counties sets one for its unincorporated area, and an incorporated town may set its own. All three counties require a barrier:

  • New Castle County adopted the 2024 International Swimming Pool and Spa Code (ISPSC), effective January 1, 2026 (county code page). Its barrier handout calls for a barrier at least 48 inches high, with that height kept for 3 feet out from the barrier; a powered safety cover on a pool, or a safety cover on a spa or hot tub, can take its place.
  • Kent County requires a barrier at least 48 inches high and a permit for any pool, spa or hot tub that can hold 24 inches of water or more. Hot tubs and swim spas may use a locking cover instead (Kent County pool requirements).
  • Sussex County's zoning code requires a safety fence or barrier at least 4 feet high, a walkway at least 3 feet wide between the pool wall and the fence, and pool setbacks of 10 feet from an interior side lot line and 6 feet from the rear (Sussex County Code, Article XXV).

Before you design, confirm whether your property falls under the county or a town building department.

County-by-County in Delaware

County / AreaBarrier rule and permit notes
New Castle County2024 ISPSC as amended by the county: 48-inch barrier, height kept 3 feet out, cover alternative.
Kent County48-inch barrier; permit for any pool, spa or hot tub that can hold 24 inches of water.
Sussex CountyZoning code: 4-foot safety fence or barrier, 3-foot walkway, 10-foot side and 6-foot rear setbacks.
TownsAsk the town building office whether it enforces the county rule or its own.

Above-Ground Pools in Delaware

Kent County lets an above-ground pool wall serve as the barrier when the wall is at least 48 inches high, the ladder is removable or locking, and the county's minimum clearances are met. In New Castle County the ISPSC's above-ground rules apply; in Sussex, ask the county whether the pool wall counts as the required 4-foot barrier.

Pool Fence Cost in Delaware

We found no published source that prices pool fences by state or city, so these are national installed ranges from our pool fence cost guide. Quotes where you live can land above or below them.

MaterialInstalled, per linear footFull breakdown
Removable mesh$15 to $35Mesh fence cost
Aluminum$30 to $60Aluminum fence cost
Vinyl / PVC$20 to $45Vinyl fence cost
Tempered glass$90 to $500Glass fence cost

National typical installed ranges, not quotes. Multiply by your fence perimeter. Some sources include one gate in the figure; extra gates, permits and hard deck surfaces add to the total. Sources: HomeGuide (Feb 3, 2026), Life Saver Pool Fence (Aug 5 and Sep 23, 2026) and Pool Guard USA (May 20, 2025). Full source list and method: pool fence cost guide. Reviewed September 2026.

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Delaware-Specific FAQs

Does Delaware require a pool fence?

Not by state law. All three counties require one: New Castle through the 2024 International Swimming Pool and Spa Code, Kent County with a 48-inch barrier rule, and Sussex County through its zoning code. Towns may set their own rules.

How tall does a pool fence have to be in Delaware?

At least 48 inches in New Castle and Kent counties and at least 4 feet in Sussex County. Inside a town, ask the town's building office.

Do I need a permit for a pool in Delaware?

In Kent County, yes, for any pool, spa or hot tub that can hold 24 inches of water. In New Castle or Sussex County, or inside a town, ask the building office what your pool needs.

What are the pool setbacks in Sussex County?

Sussex County requires a pool to sit at least 10 feet from an interior side lot line and 6 feet from a rear lot line, with a walk space at least 3 feet wide between the pool wall and the protective fence or barrier.

Can a cover replace the fence in Delaware?

In New Castle County, a powered safety cover on a pool, or a safety cover on a spa or hot tub, can take the place of the barrier. Kent County allows a locking cover on hot tubs and swim spas.

Sources

Every rule on this page traces to one of these. We link the primary source so you can check it yourself.

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