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Maryland

Building Permits in Baltimore County, Maryland

PermitStack indexes 163,641 building permits issued in Baltimore County, Maryland, with 10,347 issued in the last 12 months alone. Search by address, contractor, category, and date via our free REST API.

163,641
Total permits
10,347
Last 12 months
358
Last 30 days
vs same period prior year
Jul 20, 2026
Latest permit

Permits by category (last 12 months)

Most common permit types issued in the last year.

New construction
1,434
Fence
1,270
Addition
803
Solar
759
Demolition
410
HVAC
405
Roofing
309
Signage
297
Interior remodel
196
Pool
176

Permit data by trade in Baltimore County

Drill into the most common permit categories in Baltimore County.

Most recent permits

The 10 most recent permits issued in Baltimore County, Maryland. Full dataset available via REST API.

IssuedPermit #AddressCategoryDescription
2026-07-20R26-020391753 MINERSWAYNew constructionConstruct 3-story single family townhome with finished lower level
2026-07-20R26-040799412 GERSTRDNew constructionConstruct 2-story single-family home with finished basement and elevator
2026-07-20R26-020661618 FORGEWAYNew constructionConstruct 3-story single family townhome with finished lower level
2026-07-20CS26-0015610113 REISTERSTOWNRDSignage1 wall sign (3' x 15')
2026-07-20R26-020821608 FORGEWAYNew constructionConstruct 3-story single-family townhome with finished lower level
2026-07-20R26-040789410 GERSTRDNew constructionConstruct 2-story single-family home with finished basement and elevator
2026-07-20R26-035407131 SOLLERS POINTRDNew constructionConstruct 4-story single family townhome with finished lower level
2026-07-20R26-043436303 BLENHEIMRDAdditionExterior alteration to construct openings, install windows infill openings. Interi...
2026-07-20C26-009259631 DEVEDENTEDRDemolitionEXTERIOR ALTERATIONS TO: DEMO EXISTING EXTERIOR STAIR TOWERS (1 ON EACH SIDE OF TH...
2026-07-20R25-090405318 HEARTLANDWAYNew constructionConstruct 2-story single family dwelling with finished basement

Access Baltimore County permit data via API

Query Baltimore County, Maryland permits with a single HTTP request. Returns JSON with address, category, status, dates, and full description.

# Search all Baltimore County permits issued this month
curl -H "X-API-Key: YOUR_KEY" \
  "https://api.permit-stack.com/v1/permits/search?city=Baltimore%20County&state=MD&issued_after=2026-04-01"

Other cities we cover

Related coverage in Maryland and nationwide.

FAQ

Where does PermitStack get Baltimore County permit data?

We ingest data directly from the official Baltimore County open data portal (the official city portal) daily. This is the same source used by the city's own public dashboards, normalized into a consistent JSON schema across our U.S. jurisdictions.

How current is the Baltimore County data?

Our automated ingestion runs daily at 03:00 UTC. The latest permit in our database for Baltimore County, Maryland was issued on July 20, 2026. Permit backlogs on the city side may mean some permits take a few days to appear.

Can I access Baltimore County permits without an API key?

Yes — our free tier includes 100 requests per day, enough to search and filter Baltimore County permits interactively. Sign up for a free API key to get started.

Can I export Baltimore County permit data?

Yes. CSV export is available on every plan, including free, with the row cap rising by tier. Real-time webhooks for changed permits are on the Developer plan and above.

How long does a Baltimore County building permit take to issue?

The median time from permit filing to issuance in Baltimore County, Maryland is 33 days, based on permits issued in the last 12 months. Smaller permit types (residential alteration, electrical) typically issue faster; new construction and large additions usually take longer.

Get Baltimore County permit data in your app today

Free tier covers 100 requests per day. No credit card required.

Get Free API Key