Centreville is actively rewriting its ADU rules. See the July 2026 draft 75% size standard, parking waiver, owner occupancy, detached-unit rules, Critical Area issues and what to verify before designing.
Trappe has its own zoning, permits, rental licensing and utilities. Learn what homeowners should verify for an ADU under the Town’s 2025 zoning ordinance and Maryland’s 2026 HB 1466 transition.
Oxford has its own ADU, Critical Area and Historic District rules. Learn the published RCA 900-sq-ft/100-foot provision, sewer requirement, HB 1466 transition and parcel checks before designing.
St. Michaels has detailed ADU rules for size, owner occupancy, detached units, garage-related ADUs, setbacks, design and short-term rentals. See the 2026 HB 1466 issues to verify before designing.
Easton has its own ADU zoning rules and a major 2026 update underway through Ordinance 861. See what applies now, what is proposed, and what homeowners should verify before spending money.
Cambridge has existing ADU rules, but Maryland HB 1466 creates an important 2026 transition. Learn the old 40% size rule, the state’s 75% standard, parking, Board of Appeals review, owner occupancy and what to verify before designing an ADU.
Cheverly ADU projects can trigger both Town and Prince George’s County permits, annual Town rental licensing, local accessory-structure and lot-coverage rules, and an active 2026 Town Planning Board review of ADU regulations.
District Heights adds its own building-permit, rental-license and housing-inspection layer on top of Prince George’s County ADU zoning. This guide separates the City process from the County’s still-pending 2026 ADU legislation.
New Carrollton ADU projects can require both Prince George’s County and City building permits. The City also runs its own inspection process and annual rental licensing, making New Carrollton materially different from a county-only approval path.
Mount Rainier ADU projects require more than checking Prince George’s County zoning. The City adds its own permit and rental-license layer, while the Mount Rainier Neighborhood Conservation Overlay Zone and Design Review Board can affect design, height, accessory structures and variance review.
