Gijo John Millington’s July 2025 zoning amendment allows internal, attached, detached and accessory-building ADUs, but its 60% / 1,000-sq-ft maximum is more restrictive than Maryland’s 2026 75% standard. See what applies now and what homeowners should verify.
Galena has posted Proposed Unsigned Ordinance 2026-09 for accessory dwelling units, while its existing zoning ordinance already includes an accessory-apartment category. See what is confirmed now, what remains proposed, and what homeowners should verify before planning an ADU.
Burkittsville announced passage of a new ADU ordinance on September 15, 2026. See what is confirmed, what the public ordinance viewer does not yet make easy to verify, and the septic, historic and permit checks homeowners should complete before planning an ADU.
Port Deposit already regulates ADUs in ST, RM and CCD districts, but its 30% legacy size cap conflicts with Maryland’s 2026 ADU standard. See the Town rules, historic review, Critical Area limits and permit path to verify before building.
Perryville’s current zoning ordinance still defines an accessory apartment at 25% of the primary building or 750 sq ft, while Maryland’s 2026 ADU framework requires a less restrictive size standard. See what homeowners should verify before applying.
Charlestown’s 2025 Comprehensive Plan calls for a zoning update to allow ADUs, while its Critical Area code already contains a 900-sq-ft RCA accessory-dwelling standard. See what homeowners should verify before applying.
Rising Sun already allows accessory apartments by special exception, but its legacy 30% internal-unit size cap is tighter than Maryland’s 2026 ADU standard. See what homeowners should verify before planning an ADU.
Plan ADU privacy before construction with practical guidance on entrances, windows, shared walls, floor/ceiling sound control, plumbing noise, landscaping and mechanical equipment.
Learn how a legal ADU may affect appraisal, comparable sales, market rent, financing and resale in Maryland—and why there is no fixed value-add percentage.
Break a Maryland ADU budget into design, site work, foundation, structure, MEP, interiors, kitchen/bath, utilities and closeout with an editable bid-anatomy calculator.
