5 county-level rules, plus city-specific rules for 1 city in New Castle County, Delaware.
Verified from official government sources
New Castle County quiet hours run 9 PM-7 AM for power equipment in residential districts, and 8 PM-7 AM for outdoor power saws, sanders, drills, grinders, and garden tools (NCC Code §22.02.008). A Department of Land Use noise waiver is required to work outside those windows.
Construction and power equipment noise in New Castle County unincorporated areas is prohibited between 9 PM and 7 AM on weekdays and 10 PM–9 AM on weekends and legal holidays.
New Castle County Code §22.02.007 addresses animal noise, including barking dogs in unincorporated areas. Persistent or continuous animal noise that disturbs neighbors constitutes a noise disturbance.
New Castle County permits gas and electric leaf blower use with no statewide or county ban. Operation hours align with the county noise ordinance (NCC Code Chapter 22, Article 1), typically 7 AM to 9 PM in unincorporated areas. Delaware has no statewide gas blower prohibition. Commercial landscaping crews servicing the I-95 corridor suburbs and Brandywine Hundred neighborhoods operate primarily during fall cleanup from late October through December.
Amplified sound in unincorporated New Castle County is regulated under NCC Code Chapter 22 (noise) and the county's special event permit process. Sound must not exceed ordinance decibel limits at the nearest property line, and outdoor commercial amplification requires a special event or temporary use permit. Residential amplified parties must comply with stricter nighttime limits after 10 PM. Venues near the Riverfront Wilmington and University of Delaware campus areas face heightened enforcement during event season.
1 cities in New Castle County have their own noise ordinances rules. Each link goes to that city's dedicated page with code citations.
See every category we cover for New Castle County — parking, noise, fences, fires, animals, pools, and more.
New Castle County Ordinance Hub →