Construction site security in Seattle.
Leased AI cameras that move with the job, a camera vehicle along the fence line, and drones over big sites, watched live by our team. From $900/mo.
30-day free trial · No per-call fees · Same-day reply
Who protects Seattle construction sites after hours?
911 Sentinel watches Seattle job sites through leased AI cameras that move with the job. An alert reaches our team within 30 seconds, and within 3 minutes an operator warns the intruder off through the camera, then calls your site team and the police. Camera monitoring starts at $900/mo, with vehicle patrol and drone surveillance for larger sites.
Why Seattle owners choose 911 Sentinel
A fraction of a guard
One unarmed guard inside Seattle runs about $9,380 a month for 8 hours a night at the median state contract rate. Our camera monitoring covers the same hours from $900.
Acting while it's happening
An alert reaches our team within 30 seconds, and an operator warns the intruder off through the camera within 3 minutes, then calls your team and the police.
A local team
Based in Lynnwood, working across western Washington: a free site walk, a firm written price, a 30-day free trial, then month to month.
Building in Seattle
Seattle job sites run from tower builds in South Lake Union and Downtown, where the laydown area is a slice of the street, to mid-rise multifamily in Ballard and the Rainier Valley and industrial work in SODO, Georgetown, and Interbay. The plan follows the site: cameras on the gate, the laydown area, and the hoist on a tight urban lot, and a camera vehicle along the fence line on a wide industrial one.
Copper wire, tools, fuel, and staged materials are what go missing, mostly at night and on weekends. Seattle also lets owners authorize the police to enforce trespass through SPD's Trespass Warning Program, and our cameras keep a timestamped record of who came onto the site and when.
What we put on your property
- Leased AI cameras that move as the job changes
- An alert in 30 seconds and an operator within 3 minutes
- A recorded warning, siren, and spotlights
- A camera vehicle along the fence line, or parked on site overnight
- Drone surveillance for large, open sites
- Timestamped records for the GC and the owner
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
One unarmed guard inside Seattle, 8 hours a night: about $9,380/mo.
Firm price in writing after a free site walk. No per-call fees.
See all pricing →How it works
A free site walk sets camera placement, hours, and the written plan
AI flags a person and an operator warns them off within 3 minutes
Your site team, then police, are called, and every incident is recorded
Common questions
How much does construction site security cost in Seattle?
Camera monitoring starts at $900/mo for one leased camera with an 8-hour nightly window, and added cameras start at $250/mo, so a three-camera site starts at $1,400/mo. One unarmed guard inside Seattle costs about $9,380 a month for 8 hours a night at the median state contract rate. You get a firm price in writing after a free site walk, with no per-call fees.
Does camera monitoring work with SPD's trespass program?
Yes. Once you enroll in SPD's Trespass Warning Program and post its signs, police can warn people on your behalf and arrest anyone who comes back. Our operator warns intruders through the camera, calls your team, then the police, and the video shows who was on the site and when.
Can the cameras move as a Seattle build changes?
Yes. The cameras are leased, so they move with the work, from ground-break to close-out, and the written site plan is updated as phases change.
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