New Castle County, DE Landscaping Rules: Composting (2026)
Key Facts
- Governing section
- UDC Sec. 40.03.410.L
- Allowed material
- On-site yard and kitchen waste only
- Off-site material
- Not covered as residential use
- Applies in
- Unincorporated New Castle County only
Summary
Residents may compost or mulch yard and kitchen waste generated on their own property as a by-right accessory use, but bringing in material from elsewhere is not covered by this residential allowance.
Mulching and composting. Mulching or composting conducted by the resident using material (both yard waste and kitchen waste) found and generated on-site and not to include material from other property.
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
New Castle County's Unified Development Code lists mulching and composting among the permitted accessory uses for residential lots. Sec. 40.03.410.L allows a resident to mulch or compost yard waste and kitchen waste that is "found and generated on-site," but excludes material brought in from other property. There are no separate numeric bin, height, or setback standards written for this accessory use, unlike fences or pools in the same section. Importing outside material shifts the activity toward a commercial compost or mulch operation, which Sec. 40.03.336 regulates with frontage, setback, and screening requirements instead. This chapter governs unincorporated New Castle County; Wilmington and Newark have their own zoning codes and are not covered here.
Violations & Fines
No permit is required for on-site residential composting itself, but using off-site material or exceeding the accessory-use scope can trigger zoning enforcement or reclassification as a commercial compost/mulch operation subject to Sec. 40.03.336's siting standards.
Frequently Asked Questions
Can I compost kitchen scraps at home in New Castle County?
Can I bring leaves or food scraps from a neighbor's yard to compost?
Does this rule apply in Wilmington or Newark?
Sources & Official References
Other rules in New Castle County
Compare New Castle County to another location·View the Delaware landscaping rules overview
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