Seattle · King County · Puget Sound
Licensed commercial fire sprinkler inspection, testing, and repair across Seattle · King County · Puget Sound. NFPA-compliant, AHJ-ready reports, same-day emergency response. Downtown high-rises and SLU tech campuses need NFPA 25 at scale — we solve for that.
Free Seattle audit
We review your current coverage, flag gaps, and quote only what you actually need.
Services
Full wet, dry, and pre-action system inspection. Main drain test, alarm valve trip test, digital reporting to your AHJ.
Required by NFPA 25 — we open representative fittings, document internal condition, and report obstructions or MIC before they fail.
Supervisory signal verification, gauge comparison, and water flow checks on your schedule.
Annual DCDA/RPZ testing by certified cross-connection specialists. Report filed with the water authority for you.
Weekly/monthly/annual pump testing with flow data logged. Churn test, full flow at rated capacity, 150% flow test.
Pipe repair, sprinkler head replacement, antifreeze system servicing, and dry-pipe air compressor service — self-performed, no subs.
Serving Seattle and all of Seattle · King County · Puget Sound
Free Seattle fire sprinkler audit · No obligation · Quote in 24 hours
Why FSNW
Our inspectors do the inspection. Our repair techs do the repair. No handoff delays, no markup, no finger-pointing.
Not carbon copies. Not next week. PDF + online portal with photos, deficiency list, and carrier-ready documentation.
We handle the AHJ portal filing for you. You get a confirmation. You don't do the paperwork.
Seattle Fire Sprinkler Guides
Field-tested knowledge from thousands of commercial inspections. Property manager tools, not sales brochures.
2026-11-07
Common fire sprinkler mistakes our inspectors see in Seattle commercial properties — and exactly how to fix each before your next inspection.
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2026-11-07
Fire sprinkler deficiencies our techs find over and over in Seattle commercial inspections — and honest cost to correct each one.
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2026-11-07
Red tag from Seattle Fire Department on your commercial fire sprinkler system? Here's exactly how to get back to green fast without racking up fire watch cost.
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2026-11-07
Honest 2026 pricing for fire sprinkler inspection, testing, and repair in Seattle commercial buildings — what to expect and what to question.
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2026-11-07
What the NFPA 25 5-year internal pipe inspection actually involves, what it costs in Seattle, and why your insurance carrier is about to ask about it.
Read guide →
Free audit. No obligation. Quote in 24 hours. We serve Seattle · King County · Puget Sound.