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New Castle County, DE Landscaping Rules: Tree Trimming (2026)

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

Key Facts

Branch clearance
7 feet minimum above sidewalk
Shrubbery rule
Barred from sidewalk or street line
Enforcing agency
Department of Land Use
First-offense fine
$250 to $1,000
Scope
Unincorporated county plus opt-in municipalities

Summary

New Castle County requires owners to keep shrubbery off sidewalks and streets and trim tree branches to at least 7 feet above any sidewalk, enforced under the county's Property Maintenance Code.

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

302.12 Encroachment on sidewalk. In any zoning district it shall be the duty of the owner for a property to keep shrubbery trimmed so that it does not encroach upon or extend beyond the line of any sidewalk or public street and trim trees so that no branch extends below a height of 7 feet above the width of any sidewalk.

Source: New Castle County Code of OrdinancesView 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

Section 302.12 of the county's amended International Property Maintenance Code makes it the property owner's duty, in any zoning district, to keep shrubbery trimmed so it doesn't encroach on or extend beyond a sidewalk or public street, and to trim trees so no branch hangs below 7 feet above a sidewalk. A companion provision, 302.4.8.1, requires dead limbs and dead trees be removed outside wooded areas. Department of Land Use code officials enforce the chapter; the rule applies in unincorporated New Castle County and any incorporated municipality that opts into county property maintenance enforcement. Wilmington and Newark run their own separate codes.

Violations & Fines

First conviction: $250-$1,000 fine in Justice of the Peace Court; second offense $500-$2,500; third and later $1,000-$5,000. Each day of noncompliance is a separate violation.

Frequently Asked Questions

Does this apply inside Wilmington or Newark?
No. Wilmington and Newark are incorporated cities with their own municipal codes, separate from this County Code chapter. It applies to unincorporated New Castle County and to municipalities that opt into county property maintenance enforcement.
How low can a tree branch hang over the sidewalk?
Under Sec. 302.12, no branch may hang below 7 feet above the sidewalk's width, and shrubbery can't extend onto or over the sidewalk or street line at all.

Sources & Official References

Other rules in New Castle County

All New Castle County rules

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