Remodeling in Montgomery County
In Montgomery County, 25%1 of homes went up between 1950 and 1969: the postwar colonials and ramblers of Silver Spring, Wheaton and Bethesda, with a second wave of building in the 1980s farther up-county. Permits run through the county's Department of Permitting Services, except in the cities that issue their own.

Guides for Montgomery County
- Bathroom remodelingMidrange bathroom remodel: $25,9362
What a bathroom remodel costs in Montgomery County, how its postwar and 1980s houses and hard Potomac water shape the job, and who issues each permit.
- Kitchen remodelingMinor kitchen remodel: $27,3082
What a kitchen remodel costs in Montgomery County, how its postwar and 1980s houses shape the layout, and which permits cover the hood, wiring and gas range.
- Whole-home remodelingMajor kitchen remodel: $79,9882
What the rooms in a whole-house renovation cost in the Washington market, how the county's older, larger houses shape the plan, and how inspections are sequenced.
- Accessible bathroomsUniversal-design bathroom remodel: $41,8322
What a universal-design bath costs in the Washington market, how many older owners the county has, and the county tax credit and state loans that help pay for one.
- Basement finishingBasement remodel: $52,7572
What a finished basement costs in the Washington market, why radon testing comes first in Montgomery County, and how the county inspects framing and escape windows.
- Rental conversionsAccessory dwelling unit (new detached build): $164,6342
What an accessory apartment costs in the Washington market, what Montgomery County requires before one can be rented, and how rents and house types shape the decision.
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Sources
- U.S. Census Bureau, American Community Survey 2020–2024 5-year, table B25034. Released January 29, 2026. Montgomery County, MD.
- Zonda / Journal of Light Construction, Cost vs. Value 2025, Washington, DC. Released 2025. Washington, DC. Industry source.