Empty buildings, watched every night.
Vacant building monitoring with cameras on the doors, windows and roof line, a recorded warning when someone tries to get in, and drive-by vehicle patrol past the building on a set schedule.
From $900/mo · 30-day free trial · Same-day reply
What you’re up against
An empty building draws people in: break-ins, copper stripped from the walls, graffiti, dumping and fires. Nobody is there to notice a pried door until the damage is done, and Seattle requires owners to keep a vacant building secured from unauthorized entry. Boards keep most people out. Our cameras watch for the ones who try.
Seattle's vacant building rules, in plain words→What we put on your property
- Cameras on the entries, the ground-floor windows and the roof line
- A recorded voice warning, siren and spotlights within 3 minutes of an alert
- Drive-by vehicle patrol past the doors, the loading area and the lot
- A call to your team, then police if no one answers in the time you set
- A timestamped record of every night, with 90 days of video
We cover western Washington, from Olympia to Marysville and Bremerton to Monroe.
What it costs
- Camera monitoringfrom $900/mo
- Drive-by vehicle patrolfrom $1,500/mo
- On-site vehicle patrolfrom $2,200/mo
- Drone surveillancefrom $6,000/mo
For comparison, one unarmed guard in Seattle, 8 hours a night: about $9,380/mo.
Firm price in writing after a free site walk. No per-call fees.
See full pricing →Common questions
How does vacant building monitoring work?
Cameras watch the doors, windows and roof line during your monitoring window. When AI flags someone, an alert reaches our team within 30 seconds, and within 3 minutes an operator plays a recorded voice warning with the siren and spotlights. If they stay, we call your team, then police. In an emergency such as a fire, we call 911 right away.
The power and internet are off. Can you still watch it?
We set up Starlink where a building has no internet, and backup power is an optional add-on. Each camera needs power, and the free site walk checks both before you commit.
Will anyone go inside or confront people?
We act through the camera: a recorded warning, the siren and spotlights, then a call to your team and the police. No one from 911 Sentinel enters the building, approaches or confronts anyone.
What does it cost to monitor a vacant building?
Camera monitoring starts at $900/mo for one leased camera with an 8-hour daily window, and added cameras start at $250/mo. Drive-by vehicle patrol starts at $1,500/mo. It starts with a 30-day free trial, then runs month to month with one month's notice. You get a firm price in writing after a free site walk, with no per-call fees.
Get a free site assessment
We reply the same day, walk your property with you, and send a written plan with a firm price after the walk.
Business calls 8am–8pm every day · our monitoring team works around the clock