Baltimore County building permits

Address

County Office Building, 111 West Chesapeake Avenue, Towson, Maryland 21204

Phone

410-887-3900

Hours

Monday through Friday, 8:30 a.m. to 4:30 p.m.

Online portal

www.baltimorecountymd.gov/departments/pai/application

Jurisdiction

County · Baltimore metro

Researched October 13, 2026 from the office's official website. Offices change hours and fees; confirm before you visit. See an error? Report it.

Permit types issued

• Building Permit - Addition, Alteration, Structural Modification
• Electrical Permit
• Mechanical HVAC System Permit
• New Residential Dwelling Building Permit
• Plumbing and Gasfitting Permit (including Gas Only)
• Razing (Demolition) Permit
• Roofing and Siding Alterations Permit

Fees, review times and which of these your project needs are in the Deep Permit Report.