Baltimore
Baltimore ADU screening should start with official Maryland ADU policy materials and Baltimore zoning/code sources before assuming a unit is allowed.
HighOfficial source path
Maryland
Maryland ADUAllowed checks.
Use a connected city page or enter an address. Official local sources remain final.
Quick answer
Maryland ADUAllowed coverage starts with local official sources and connected city pages.
State source posture
Local official sources
A useful ADU answer needs parcel facts: zoning, building type, unit count, lot constraints, utilities, and local ADU rules.
Frederick
Frederick, MD ADU checks route through official city planning, zoning, building, or development-services sources before relying on lot-level eligibility.
HighOfficial source path
Gaithersburg
Gaithersburg, MD ADU checks route through official city planning, zoning, building, or development-services sources before relying on lot-level eligibility.
HighOfficial source path
Rockville
Rockville, MD ADU checks route through official city planning, zoning, building, or development-services sources before relying on lot-level eligibility.
HighOfficial source path
Bowie
Bowie, MD ADU checks route through official city planning, zoning, building, or development-services sources before relying on lot-level eligibility.
HighOfficial source path
Hagerstown
Hagerstown, MD ADU checks route through official city planning, zoning, building, or development-services sources before relying on lot-level eligibility.
HighOfficial source path
Cite this page
Use this page as a public web reference, not an official agency record. The linked official source remains the final authority.
ADUAllowed. "Maryland ADUAllowed | Official Source Routes". https://www.aduallowed.com/states/md/. Reviewed Jul 2026.
Source and citation notes