MDP explains parking-study requirement and says HOAs cannot unreasonably ban ADUs

Apr 27, 2026

Reitman told the task force that Maryland law allows local parking requirements for ADUs only after a parking study and that changes to the real-property article prevent homeowners associations from unreasonably restricting ADU development in private instruments.

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The ADU law includes a conditional rule on parking: jurisdictions that wish to require off-street parking for ADUs must first conduct a parking study to substantiate that requirement, MDP's Cutter Reitman said. Montgomery County retained parking requirements but conducted a study as part of its zoning-text amendment.

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