Fence Regulations in Wilmington, DE

If you live in Wilmington or are thinking about moving there, fence regulations are one of those things you probably won't think about until they affect you directly. Wilmington has 5 specific rules on the books covering different aspects of fence regulations, and some of them might surprise you.

Material Restrictions

Wilmington's zoning code bans barbed wire, razor wire, and similar fencing material in every residential and commercial district, and caps solid fences at six feet and open fences at eight feet unless another section requires more.

Key details: Barbed/razor wire: Banned in residential and commercial districts. Solid fence max height: 6 feet. Open fence max height: 8 feet. Ban effective date: January 8, 1988. Enforced by: Dept. of Licenses and Inspections.

Violating the fence rules is a misdemeanor: enforced by licenses and inspections, first-offense fines run $250 to $1,000, and repeat offenses climb up to $5,000 or a year in jail.

This is one of the stricter rules in Wilmington's municipal code. If you are unsure whether your situation complies, it is worth checking with the city before proceeding.

Height Limits

Wilmington caps solid residential fences at six feet and open fences at eight feet, with barbed and razor wire banned in residential and commercial districts since 1988.

Key details: Solid fence max: 6 feet in residence/waterfront/commercial. Open fence max: 8 feet in residence districts. Barbed/razor wire: Banned in residential, commercial districts. Setback rule: 25%+ solid fences follow setback line. Spite fences: Prohibited if built to annoy neighbors.

Building inspector enforcement; fences exceeding height limits or built with prohibited barbed/razor wire must be removed or brought into compliance, and spite fences are unlawful regardless of height.

Fence Permit Requirements

Fences that cross Wilmington's building line onto a sidewalk or street need a Licenses and Inspections permit approved by Public Works, capped at a $35 application fee; on-property fence height and material are set separately by the zoning code.

Key details: Permit trigger: fence extends beyond building line. Application fee: up to $35. Issuing agency: Licenses & Inspections, with DPW approval. On-property height cap: 6 ft solid / 8 ft open. Removal deadline: 30 days after permit revoked.

Erecting an encroaching fence without this permit, or ignoring a revocation notice, is a Code violation under section 1-5: up to $2,500 for an individual or $5,750 for a corporation per day, plus city removal billed to the owner.

Retaining Walls

In Wilmington's zoning code, a retaining wall under one foot tall is exempt from the residential building setback line; anything taller has to sit behind that line like the house itself.

Key details: Exempt height: under 1 foot. Governing chapter: City Code ch. 48, Zoning. R-1 setback line: 30 feet from street. Fence/railing exemption: under 4 ft, <25% solid.

Zoning administrator or Department of Licenses and Inspections enforcement; a wall built into the setback without qualifying for the exemption is a zoning violation subject to a stop-work order or removal.

Neighbor Fence Rules

City zoning code lets the building inspector order down any fence or wall built mainly to annoy or damage the property next door, regardless of the district or the fence's own height and setback compliance.

Key details: Governing section: Sec. 48-475(d), Fences. Who decides: Building inspector's determination of intent. Where it applies: All zoning districts citywide. First-offense fine: $250 to $1,000. Max penalty: $5,000 or one year jail.

Violating Chapter 48, including the spite-fence ban, is a misdemeanor: $250 to $1,000 for a first offense, up to $2,500 for a second, and up to $5,000 or a year in jail for repeat offenses.

Compared to other cities, Wilmington takes a harder line on neighbor fence rules. The enforcement and penalty structure reflects that.

The Bottom Line

Wilmington is tougher than many cities when it comes to fence regulations. Out of the 5 rules covered here, 2 are rated strict. If you are a homeowner, renter, or business owner in Wilmington, take the time to understand these requirements before they become a problem. Most violations come with fines, and some repeat violations can escalate.

This guide is based on Wilmington's current municipal code. Local rules can and do change, so check the individual ordinance pages for the latest details, penalties, and FAQs.