Fire Protection permits · Maryland

Where Maryland installs fire protection, permit by permit.

Sprinkler and alarm filings are code-driven, scheduled work with a small, identifiable set of firms behind them. Tradewinds observes them in county permit records, tied to the property behind each filing.

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What the fire protection record shows.
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Residential sprinkler systems

New homes in sprinkler-mandate jurisdictions file a system permit, which makes the volume a function of new construction.

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Alarm and detection

Alarm filings follow occupancy changes and renovations, and they name the firm holding the license.

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Tied to new construction

Sprinkler work sits on the same parcels as new-build permits, in a predictable position in the sequence.

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A small field

Fewer firms file this trade than any other we cover, so the competitive picture in a county is legible at a glance.

28847
fire protection permits observed in Maryland, since January 2019

By county

Baltimore 11722
Baltimore City 8284
Frederick 5090
Carroll 1925
Anne Arundel 1199
Howard 577
Prince George's 50

By year

2019 1662
2020 1199
2021 3517
2022 4441
2023 4165
2024 4269
2025 4950
2026 4644
Contractors on record, by county

Every firm below filed permits we observed in that county. Counts are what we hold, so they reflect our coverage as much as the work happening there.

All Maryland fire protection contractors

Other trades in Maryland

Fire Protection in other states

See last week's activity, free

Every Monday we publish last week's fire protection permits for every county we cover. Browse this week's activity.

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Tell us your territory and we will bring the data to the first call. See the counties and trades we cover on the coverage page, or the firms doing this work in the contractor registry.

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Built from county permit filings. Not every filing names a trade cleanly, and counties differ in what they publish, so these counts reflect our coverage as much as the work happening on the ground.