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New Castle County, DE Fence Regulations: Fence Permit Requirements (2026)

Light Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Ordinary fence
No building permit needed
Pool barrier fence
Building permit required
Floodplain fence
Floodplain permit required
Residential fence height
6 ft (4 ft in street yard, NC districts)

Summary

New Castle County exempts ordinary yard fences from building permits, but swimming pool barrier fences need one and fences built in a floodplain need a floodplain permit.

City-specific rules exist: Wilmington has its own fence permit requirements rules that differ from New Castle County's county-level regulations. If you live in Wilmington, check the city-specific page instead.

C.Work exempt from permit. ... Permits shall not be required for the following:1.Building, residential and swimming pool and spa. ... g.Fences, other than swimming pool barriers.

Source: New Castle County Fencing Fact SheetView official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 5).

Full Breakdown

Under Code § 6.03.012(C)(1)(g), the county's building-permit exemption list includes 'Fences, other than swimming pool barriers': an ordinary yard fence goes up without a building permit. That exemption does not erase zoning: Code § 40.03.410(E) still caps residential fences at 6 feet (4 feet in the street yard in the NC5, NC6.5, NC10 and NC15 districts) and bans barbed wire, sheet metal and plywood. A fence enclosing a swimming pool is a barrier the exemption excludes, so it needs a building permit, and § 40.03.410(E)(7) separately requires a floodplain permit for any fence proposed in a floodplain. This building code binds unincorporated County land and any municipality that opts in; Wilmington and Newark run their own building codes and are not covered by this chapter.

Violations & Fines

Building a pool-barrier or floodplain fence without the required permit draws a stop-work order and code-enforcement fines under Chapter 6; a fence that violates the height, material, or maintenance standards in § 40.03.410(E) is a separate zoning violation subject to a correction order.

Frequently Asked Questions

Do I need a permit to build a fence in New Castle County?
No. Code § 6.03.012(C)(1)(g) exempts ordinary fences from the building permit requirement, though the fence must still meet the height and material rules in § 40.03.410(E).
Does a pool fence need a permit?
Yes. The permit exemption for fences specifically excludes swimming pool barriers, so a pool-enclosure fence requires a building permit.
Is this rule in effect in Wilmington or Newark?
No. Both cities enforce their own building codes; this exemption covers unincorporated New Castle County and any municipality that opts in.

Sources & Official References

Other rules in New Castle County

Height LimitsSome RestrictionsRetaining WallsSome RestrictionsMaterial RestrictionsSome RestrictionsLandscaping Rules: CompostingLight RestrictionsEnvironmental Rules: Coastal DevelopmentSignificant RestrictionsNoise from Specific Sources: Delivery Truck NoiseSome RestrictionsCode Violation Reporting: How to ReportSome RestrictionsWater Use Rules: Leak Reporting DutySome RestrictionsSign Regulations: Window SignsLight Restrictions

All New Castle County rules

Compare New Castle County to another location·View the Delaware fence regulations overview

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Fence Permit Requirements in Cities Across New Castle County

Wilmington, DE