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Baltimore building permits

Baltimore's commercial permit activity is led by residential mep — 60% of the 186,403 permits PermitCore classifies across 10 commercial segments there. Reliable permit valuations total ≈$16.8B (across the 78% of filings with a valuation we can stand behind). Filing activity is down 7% over the last 90 days versus the prior 90. 22 IBC segment tags. Field-level data-quality flags. Older history available via free signup or API; the recency module on this page surfaces the last 10 days.

186,403 segment-eligible permits classified · field-DQ-cleared · refreshed nightly

203,304 segment-eligible permits in Baltimore. Use Explore the data below for the filterable view.

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Where the value concentratesBaltimore

Permit mix by segment

Reliable value by segment

Filing momentum

Prior 90d3,581

Last 90d3,345

-7% vs prior 90d

MAPPEDLast 10 days of permits · parcel-joined · 22 IBC segments · field-level DQ flags

8 of 9 segments currentsee per-segment freshness →

index rebuilt today

Why this data is real

We classify permits into real segments — and label what we don't know.

Classified, not scraped

We read each permit's work-type, scope, and occupancy fields to place it in a real segment — so “commercial HVAC in Baltimore” means real HVAC work, not a keyword match.

Parcel-joined + enriched

Every permit is joined to its tax lot and geocoded, with roof & HVAC sized — you see the building, not just the address.

— and we flag what we don't know

Coverage is labeled, missing fields show —, and where there are too few reliable filings to stand behind a value we publish —, never a fabricated number.

Baltimore by segment

Sourced from the segment-distribution artifact · Each links to that segment in Baltimore

Residential MEP111,453 Residential Alteration41,173 Residential Demolition17,431 Commercial MEP6,673 Commercial Alteration5,139 Residential New (Single-Family)2,119 Commercial Demolition1,859 Commercial New Construction308 Multifamily Alteration221 Multifamily New Construction27

12 segments: no permits in window.

Classification scopeA meaningful share of Baltimore's permits — classified by work type but without a targeted segment (general alterations, repairs, and similar) — are queryable as raw data via the API but are not shown in the segment breakdown above, which covers Baltimore's segment-routed permits.

Coverage: MAPPED · refreshed nightlyDevelopers — query the permit API →Get Baltimore permits delivered to your CRM →