Free weekly building-permit insights for Baltimore County, MD, computed from official city permit portals, 482 permits filed in the latest period (through 2026-09-16), with the week-over-week trend and the busiest renovation, solar, pool, and remodel categories.
Baltimore County Department of Permits, Approvals and Inspections
Building permits in Baltimore County, Maryland are issued by the county's Department of Permits, Approvals and Inspections (PAI), which oversees development and the use of land across the county's more than 600 square miles. Applications for building, electrical, and plumbing permits are completed online, and issued permit records are public. Note that Baltimore County does not include the City of Baltimore, an independent city with its own permitting department.
Office: County Office Building, 111 West Chesapeake Avenue, Towson, MD 21204 · 410-887-3353 · baltimorecountymd.gov
How to search permits
Open the building permit list on the Baltimore County open data site, linked from the PAI Permit Processing page. Most records are available from 2009 onward and new records are added daily.
Filter by address, permit number, or issue date to find the records you need.
Call the department at 410-887-3353 if you cannot find a record online.
How often is Baltimore County building permit data updated?
Weekly. Permit Ledger pulls Baltimore County's building permits from official city permit portals every week, then recomputes the total filed, the week-over-week trend, and the busiest permit and trade categories.
Is Baltimore County building permit data free?
Yes. The weekly Baltimore County overview is free to browse, total permits filed, the trend, and the top permit and trade types. The $39/mo dashboard adds the top ZIP codes, the most-active contractors, and a Monday email.
What types of permits does Permit Ledger track in Baltimore County?
Renovation, remodel, addition, and repair permits, plus solar and pool/spa trade permits. Each permit is classified into a single clear category, so you can scan the residential and trade work most useful to contractors, suppliers, and investors.
Where does Baltimore County's permit data come from?
Official public records from official city permit portals, normalized into one consistent weekly format so every city reads the same way.
Need the raw permit records for Baltimore County? Permit data feeds.