sun room addition on the rear of a single family home

A permit is required if you extend the area, height or overall footprint of an existing one– or two-family dwelling or their existing accessory structures.

If your construction project includes both alteration and addition to the structure you will receive an Add/Alter permit.

If your project includes an accessory dwelling unit (ADU) such as accessory apartment, granny pod, backyard cottage or carriage house, among others, please read the applicable requirements. 

DPS is no longer accepting paper permit applications or plans. Information must be submitted using our eServices programs. For assistance with eServices please email DPS.eServices@montgomerycountymd.gov or contact Aaron Smith at 240.994.0335 or via email at aaron.smith@montgomerycountymd.gov.

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