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Kent County, DE Building Setbacks & Zoning: Structure Height Limits (2026)

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

Key Facts

AC/AR/RS1/RS5/RMH cap
35 feet
RM district cap
50 feet
Nonresidential in AC/AR
up to 80 feet
Accessory structure cap
20 feet
Flood elevation
exempt from height cap
Enforcing agency
Division Head of Inspections and Enforcement

Summary

Outside Kent County's Growth Zone Overlay, residential structures in the AC, AR, RS1, RS5, and RMH zoning districts are capped at 35 feet, while the RM multifamily district allows up to 50 feet under Zoning Code Section 205-82.D. Homes elevated to meet National Flood Insurance Program requirements may exceed those caps.

These county ordinances apply to unincorporated areas of Kent County. Incorporated cities within the county may have their own rules that take precedence over county-level regulations.

D. Height limits. (1) AC, AR, RS1, RS5, RMH Zoning Districts: 35 feet. (2) RM Zoning District: 50 feet. (3) Maximum height may be increased above the limitation of Subsection D(1)and (2) of this section for elevation required by the National Flood Insurance Program.

Full Breakdown

D uses identical numbers for the overlay area). Those caps can be exceeded only for the additional elevation the National Flood Insurance Program requires, a common need in a county that includes low-lying Delaware Bay shoreline and floodplain along the St. Jones and Murderkill Rivers. D(4). Any structure that uses that taller nonresidential allowance must push out every yard and setback line so it equals the height of the tallest point of the building, trading additional height for additional separation from neighboring lots. E regardless of the district.

A property owner who wants to exceed any of these caps, other than the flood-elevation allowance, needs a variance from the Kent County Board of Adjustment rather than a building permit alone.

Violations & Fines

Exceeding a district's height cap without a variance is enforced the same way as any other zoning violation under Section 205-426. The Division Head of Inspections and Enforcement can require the structure altered to comply, and a conviction carries a mandatory minimum fine of $100, up to a $1,000 maximum, up to 10 days imprisonment, or both. Each day the oversized structure remains in violation is treated as a separate offense, and the County Attorney can seek a court injunction to force compliance.

Frequently Asked Questions

How tall can I build a house in unincorporated Kent County?
Kent County sets the cap by zoning district: homes in AC, AR, RS1, RS5, and RMH are limited to 35 feet under Section 205-82.D, while the RM multifamily district is allowed up to 50 feet. Both figures apply whether the lot sits inside or outside the Growth Zone Overlay.
Can I build higher to avoid flood damage?
Yes. Section 205-82.D(3) lets a residence exceed the normal 35 or 50 foot cap specifically for the additional elevation the National Flood Insurance Program requires, which matters across Kent County's Delaware Bay shoreline and river floodplains. The exception only covers the flood-elevation increase, not general extra stories.
How tall can a shed or detached garage be?
Accessory structures such as sheds, detached garages, and workshops are held to a flat 20-foot height limit under Section 205-85.E across the AC, AR, RS1, RS5, RM, and RMH districts, well below the 35-to-50-foot caps that apply to the house itself, and the limit does not vary by lot size.

Sources & Official References

Other rules in Kent County

All Kent County rules

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