Zoning Overlays & Bonuses in New Castle County, DE (2026)
1 county-level rule, plus city-specific rules for 1 city in New Castle County, Delaware.
Verified from official government sources
Note: These county rules apply to unincorporated areas of New Castle County. If you live within an incorporated city, that city's own rules apply: see the city list below.
Density Bonus Law
New Castle County lets major subdivisions earn up to a 20% density bonus above base zoning capacity when developers voluntarily set aside Moderately Priced Dwelling Units, with MPDUs equal to half the bonus percentage.
New Castle County Voluntary MPDU Density Bonus
Some RestrictionsNew Castle County Code § 40.07.520
MPDUs may be provided on a voluntary basis subject to the following provisions. A. Density bonus. Any major subdivision proposing dwelling units may receive a density bonus if such plan provides MPDUs. 1. The residential density incentive shall be up to twenty (20) percent of the base density... B. Set-aside. The number of MPDUs that shall be set-aside shall be based upon a percentage equaling ...
Zoning Overlays & Bonuses by City in New Castle County
1 cities in New Castle County have their own zoning overlays & bonuses rules. Each link goes to that city's dedicated page with code citations.
All New Castle County ordinances
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New Castle County Ordinance Hub →