Hyattsville ADU projects follow Prince George’s County zoning and building approval, while the City adds annual rental licensing and inspections, certain local site permits, and coordination with County historic-preservation review.
Greenbelt homeowners face a distinctive ADU approval stack: Prince George’s County zoning, a City building permit, annual City rental licensing, and for many historic-core properties the Greenbelt Neighborhood Conservation Overlay Zone.
Bowie homeowners face a two-layer approval system: Prince George’s County controls zoning and construction-code approval, while the City of Bowie adds its own building permit and rental-license requirements. This 2026 guide explains what applies now and what is still changing before Maryland’s October 1 ADU deadline.
College Park ADU planning requires more than checking Prince George’s County zoning. The City adds its own building permit, rental-occupancy rules and Old Town historic-district review, while County ADU legislation remains in motion in September 2026.
There is no single statewide ADU height limit in Maryland. This guide explains how local accessory-structure rules, detached ADU design, setbacks, lot coverage and 2026 law changes affect how tall an ADU can be.
Capitol Heights considered an ADU proposal in 2026, but we could not verify it as adopted law. See what the draft proposed and what homeowners should verify now.
Bel Air already recognizes accessory dwelling units, but some residential ADUs require special-development approval. Here is what homeowners should verify before Maryland’s October 1, 2026 deadline.
Hagerstown’s proposed ADU rules allow one attached, internal or detached unit up to 75% of the main house with no extra parking—but alley-only access may block a detached ADU.
Salisbury is replacing its restrictive 500-sq-ft accessory-apartment framework for Maryland’s October 1 deadline. See what applies now, what is proposed, and what homeowners must verify.
A Maryland ADU does not automatically receive a separate street address. Learn how local addressing rules, Unit B designations, USPS mail delivery and emergency/911 addressing can differ by jurisdiction.
