ADU Rules in Waldorf, Maryland

Waldorf is an unincorporated community in Charles County, Maryland, approximately 25 miles southeast of Washington DC. There is no incorporated City of Waldorf — it is a Census-Designated Place, not a municipality. With a population of about 77,000, Waldorf is one of the largest unincorporated communities in Maryland. A predominantly suburban bedroom community for the Washington DC area, Waldorf has significant planned subdivision development. All zoning and permitting is handled by Charles County.

CRITICAL: No City of Waldorf Government

Waldorf is NOT an incorporated city. All ADU permits, zoning questions, and inspections go through:

• Charles County Department of Planning and Growth Management
• Charles County Department of Inspections and Permits

Charles County ADU Rules

Charles County's Zoning Ordinance governs ADUs in Waldorf. Verify current ADU requirements with the Charles County Department of Planning and Growth Management.

Permitted ADU Types

Per Charles County Zoning Ordinance (verify current standards):

• Accessory apartments: Within or attached to primary structure
• Detached ADUs: Subject to Charles County standards

Verify current provisions with Charles County Planning.

Size Limits

Per Charles County (verify current standards):

• Maximum floor area
• Lot coverage restrictions

Setbacks

Per Charles County residential zone:

• Rear: Minimum setback
• Side: Minimum setback

HOA Considerations

Waldorf has numerous planned subdivisions with active HOAs. Consult your HOA before applying for permits — HOA restrictions on ADUs may be more limiting than county zoning.

Chesapeake Bay Critical Area

Charles County borders the Potomac River and has Chesapeake Bay tributary watersheds. Properties within 1,000 feet of tidal waters or significant waterways may be in Maryland's Critical Area. Verify Critical Area status for waterfront properties.

Permit Process

1. Check HOA restrictions: If applicable
2. Verify zoning: Charles County Department of Planning and Growth Management
3. Check Critical Area status: If near the Potomac River or tidal waterways
4. Submit plans: Charles County Department of Inspections and Permits
5. Building permit and inspections
6. CO: Required before occupancy

Contact

Charles County Department of Planning and Growth Management 200 Baltimore Street, La Plata, MD 20646 Phone: (301) 645-0692 Website: charlescountymd.gov

Disclaimer: There is no City of Waldorf — Charles County governs. HOA restrictions may apply. ADU rules are evolving following Maryland's 2024 statewide legislation. Verify current standards with Charles County before starting any project.