Multifamily Fire Protection
Sprinklers, standpipes, alarms + suppression on apartment and condo buildings.
93K permits classified across 6 metros
Browse multifamily fire protection permits in New York City →What it covers
Multifamily fire protection permits cover life-safety systems filed against apartment and condominium stock — sprinkler retrofits into existing buildings, standpipe and riser replacement, building-wide fire alarm upgrades, and suppression work in common areas and mechanical rooms. Split out of Multifamily Alteration on classifier reclassification; segments are overlap-free. Sprinkler retrofit is often mandated by local ordinance on a deadline, so volume here tends to move in regulatory steps rather than with the construction cycle. Published for 9 jurisdictions — the narrowest coverage of the three fire segments, because separating multifamily fire work needs the source to publish both a fire filing type and enough building detail to tell apartments from houses. At least 69 jurisdictions in the index publish fire-shaped permits, so an empty metro here reflects what we have mapped, not an absence of sprinkler retrofits. Read this cohort as a floor, not a census.
How a permit lands in Multifamily Fire Protection.
Every silver permit flows through a two-stage classifier. The deterministic stage maps the structured signals — work_class, the normalized permit type, and the building sub-type — into the segment vocabulary where the mapping is unambiguous. The machine-learning stage handles the cases that aren't direct lookups: multi-vocab permit-type strings, ambiguous occupancy spans, and jurisdictions that bundle categories. The segment is the classifier's output, the same axis across every metro — so multifamily_fire_protection means the same thing in NYC as in LA even though the upstream jurisdictions emit completely different raw permit-type strings.
When the signal genuinely isn't there, we say so. A row with no assignable segment degrades honestly — to its work-nature, then to its raw source type, and only to “Unclassified” when truly nothing is known. We never guess a segment to fill a gap; an honest Unclassified is the floor, and field-level data-quality flags surface when the classifier had low confidence. That restraint is the point — the classification is only worth selling on if the “don't know” is honest.
Multifamily Fire Protection by metro — where it’s moving
Where multifamily fire protection permits are classified today, ranked by volume — with each metro’s momentum (the last 90 days vs the prior 90) so you can see where the segment is heating up in your territory. Momentum shows only where we have enough filings to stand behind it. Metros with recent activity link straight into the live browse.
-10% vs prior 90d
- New York City →-10%88K
- Orlando →+13%2,424
- Cincinnati →+90%1,596
- Norfolk-12%218
- Miami5
- Austin3
Recent multifamily fire protection permits
Real permits classified into Multifamily Fire Protection in the last 30 days.
- 143 Avenue OAlteration / Commercial—2026-08-26New York City
- 55 Tehama StreetAlteration / Commercial—2026-08-26New York City
- 143 Avenue OAlteration / Commercial—2026-08-26New York City
- 1074 Kelly StreetAlteration / Commercial$245K2026-08-26New York City
- 555 Pacific StreetAlteration / Commercial$30K2026-08-26New York City
- 1745 BroadwayAlteration / Commercial$7K2026-08-25New York City
Who tracks Multifamily Fire Protection.
Multifamily Fire Protection is a sales-intelligence segment for suppliers and reps targeting multifamily developers and general contractors. Filter it by metro, rank the contractors pulling these permits, and see the projects worth selling into — the same way across every covered market.