Kent County ADU Rules 2026: Current Rules, Owner Occupancy, Parking & Town Exceptions

Kent County already has a modernized accessory dwelling unit framework in its current Land Use Ordinance. For properties under County zoning, one ADU may be located in a principal or accessory structure in several residential and rural districts. The current rule requires owner occupancy, allows the ADU to be rented, excludes the ADU from density calculations, and requires one parking space in the rear yard.

The first step is confirming that Kent County zoning actually controls the parcel. Betterton, Chestertown, Galena, Millington and Rock Hall are incorporated towns and can have their own zoning rules. For an unincorporated property, the County Land Use Ordinance is the starting point.

Last verified: September 13, 2026. This page distinguishes the County’s codified ADU rules from the separate requirements that may apply inside incorporated towns. Maryland ADU Guide is an independent research publication and is not legal, zoning, architectural, engineering or permitting advice.

Kent County ADU status at a glance

Where does Kent County allow an ADU?

Article III of the current Kent County Land Use Ordinance allows one accessory dwelling unit in a principal or accessory structure as an accessory use in the Agricultural Zoning District (AZD), Resource Conservation District (RCD), Rural Character (RC), Critical Area Residential (CAR), Community Residential (CR), and Village (V) districts when the listed conditions are satisfied.

The ordinance also expressly states that ADUs do not count against the density of the zoning district. That point is significant because Maryland’s HB 1466 requires local ADU laws to exclude ADUs from density calculations.

How large can a Kent County ADU be?

The current Article III provision does not give a single countywide numerical maximum in the ADU conditions we reviewed. Instead, it says the ADU must be subordinate to the principal dwelling in size and appearance.

That is different from older Kent County material that contained a special 900-square-foot limit for certain RCD accessory dwellings. The current Article III document effective July 25, 2025 uses one consolidated condition set and does not repeat that 900-square-foot RCD cap in the current ADU provision.

Maryland defines an ADU as a secondary unit up to 75% of the size of the primary single-family detached dwelling. Because Kent County uses a qualitative “subordinate” standard rather than a single numerical ceiling in the current provision, homeowners planning a large ADU should ask Planning, Housing & Zoning to confirm the maximum square footage it will approve for the specific parcel before final design.

Does Kent County require owner occupancy?

Yes. The current ordinance states that the property owner must reside on the premises. The ADU itself may be rented, but it may not be subdivided or conveyed separately from the primary dwelling.

The ordinance also requires the property’s appearance to remain that of a single-family dwelling. If the ADU uses a separate entrance from the primary dwelling, that entrance must be located from the side or rear yard.

The parking rule is the main 2026 verification point

Kent County’s current ADU condition requires one parking space in the rear yard for the accessory dwelling unit.

Maryland HB 1466 says a jurisdiction may not impose additional ADU parking requirements without first completing a parking study, and any local ADU law that requires additional parking must provide a waiver process. In the official materials reviewed for this guide, we did not verify a published Kent County HB 1466 parking study or a specific ADU parking-waiver process.

Can the ADU be detached?

Yes. The current County rule expressly permits an ADU in either a principal structure or an accessory structure, subject to the applicable zoning-district standards and the Article III conditions.

Detached projects still need to comply with the applicable accessory-structure requirements for the zoning district, along with building, environmental and health requirements. Maryland HB 1466 separately says local side and rear ADU setbacks may not exceed the setbacks that otherwise apply to accessory structures.

Building permits, Health Department review and Critical Area issues

Kent County’s ADU rule specifically requires compliance with County building codes and Health Department regulations. The County’s building-permit page requires construction plans, a site plan and applicable fees, and notes that Health Department, sediment-control and stormwater fees or reviews may also apply.

For properties using a private well or septic system, confirm wastewater and water capacity before paying for final plans. For waterfront and Chesapeake Bay Critical Area properties, lot coverage, buffer and other environmental restrictions can also affect where a detached ADU can be located.

For private-system planning, use our Maryland ADU septic and well guide.

Kent County vs. incorporated towns

Kent County contains five incorporated towns: Betterton, Chestertown, Galena, Millington and Rock Hall. A Kent County mailing address does not automatically mean County zoning controls the property.

The County’s zoning map identifies the incorporated towns separately. Before relying on any County ADU standard, confirm whether the parcel is inside a town boundary and which planning/zoning office has jurisdiction. Use the Maryland ADU Jurisdiction Finder as the starting point.

What Kent County homeowners should do now

1. Confirm jurisdiction. Determine whether County zoning or an incorporated town controls the parcel.
2. Confirm the zoning district. County ADUs are expressly listed in AZD, RCD, RC, CAR, CR and V under the current provision.
3. Confirm the proposed size. Ask how the County applies the “subordinate in size” standard to your specific design and Maryland’s 75% definition.
4. Check the parking requirement before paving. Ask the County to identify the applicable HB 1466 parking study and waiver process.
5. Confirm accessory-structure setbacks. Detached units must fit the parcel’s applicable accessory-structure standards.
6. Check well and septic capacity early. Health Department approval can determine whether another dwelling is feasible.
7. Check Critical Area constraints. Waterfront parcels may face buffer and lot-coverage rules.
8. Re-check before spending. Confirm the current rule with Planning, Housing & Zoning before paying for final plans or a prefab deposit.

Primary sources used for this Kent County guide

• Kent County Land Use Ordinance — Article III, Uses, effective July 25, 2025
• Kent County Chapter 222 Unified Development Ordinance, effective July 25, 2025
• Kent County — Building Permit Requirements
• Maryland Department of Planning — HB 1466 ADU FAQ

For statewide comparison, use the Maryland County ADU Rules Tracker. Maryland ADU Guide is maintained by Gijo John as an independent research publication.