Permits by Project
Do You Need a Permit for Water-damage repair?
Water-damage repair (drywall, insulation, flooring after a leak).
Of the 10 areas we checked, it depends on the scope in 10.
Washington, DC
Washington, DC
Depends- When it applies
- finish repairs exempt (non-historic); alterations/structural/plumbing/electrical = permits
- Permits
- Building, Plumbing, Electrical
- Faster route
- Instant Permits for qualifying scopes
Source: DOB How to Get a Permit, checked 2026-10-07
Maryland
Anne Arundel County, MD
Depends- When it applies
- cosmetic repair = no permit; 'Residential Alteration' (construction/renovation) = permit; waterproofing has its own permit
- Permits
- Building
Source: I&P Do I need a Permit?, checked 2026-10-07
Charles County, MD
Depends- When it applies
- finish work (paint/flooring) = no permit per adopted IRC R105.2; structural/MEP = permits
- Permits
- Building, Plumbing, Electrical
Source: Charles County Code Ch. 224, checked 2026-10-07
Montgomery County, MD
Depends- When it applies
- 'repair' = no permit; 'reconstruction or renovation... other than a repair' = permit
- Permits
- Building, Plumbing, Electrical
Source: DPS Residential Alterations Permit Process, checked 2026-10-07
Prince George's County, MD
Depends- When it applies
- finish repairs (paint, flooring, drywall patching) = no permit; structural repairs = building permit; plumbing/electrical = trade permits
- Permits
- Building, Plumbing, Electrical
- Notes
- Per DPIE guide tables; 'Foundation waterproofing B Y' (separate waterproofing permit).
Source: DPIE Homeowner's Guide to Permits, checked 2026-10-07
Northern Virginia
Arlington County, VA
Depends- When it applies
- ordinary repairs 108.2(14.7/14.8/14.10) = no; structural/MEP alterations = permits
- Permits
- Building, Plumbing, Electrical
Source: USBC 13VAC5-63-80 Section 108, checked 2026-10-07
City of Alexandria, VA
Depends- When it applies
- ordinary repairs = no; alterations = permits
- Permits
- Building, Plumbing, Electrical
Source: USBC 13VAC5-63-80 Section 108, checked 2026-10-07
Fairfax County, VA
Depends- When it applies
- ordinary repairs = no; alterations = permits
- Permits
- Building, Plumbing, Electrical
Source: USBC 13VAC5-63-80 Section 108, checked 2026-10-07
Loudoun County, VA
Depends- When it applies
- ordinary repairs = no; alterations = permits
- Permits
- Building, Plumbing, Electrical
Source: USBC 13VAC5-63-80 Section 108, checked 2026-10-07
Prince William County, VA
Depends- When it applies
- ordinary repair = no; structural/plumbing/electrical/mechanical alterations = permit always required
- Permits
- Building, Plumbing, Electrical
Source: PWC Do I Need a Permit?, checked 2026-10-07
Summarized from each area’s official permit pages and codes, as of October 2026. Some Maryland municipalities issue their own permits, rules change, and many answers depend on the exact scope, so confirm with the permit office before work starts. This is general information, not legal advice.
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