Accessory Structures in Wilmington, DE (2026)
1 verified accessory structures rules for Wilmington, Delaware, sourced directly from the municipal code and official government pages.
Verified from official government sources
Shed & Carport Rules
Wilmington requires a building permit for any shed, regardless of size, since sheds aren't on the building code's exempt-work list. Sheds up to 100 square feet built alongside a single-family home skip the sealed design-professional plan requirement, but the permit itself is still mandatory.
Wilmington Shed Permit Requirements
Some RestrictionsWilmington City Code § 4-27 (IBC 2018 § 105.4.2)
Section 105.4.2. Plans. No permit will be issued for construction, alteration, repair, addition, or modification unless the plans and specifications have been professionally prepared by and have the signature and seal of the appropriate design professional, expert in that discipline, as defined by the professional registration and licensing laws of the State of Delaware, licensed by the City of...
Looking for New Castle County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Wilmington city rules.
Accessory Structures in New Castle County →