Class-A protection that never makes a scene.
Empty lobbies, plazas, and parking structures after hours, watched live and warned off through the camera, because in a Class-A building a confrontation is its own liability.
From $900/mo · 30-day free trial · Same-day reply
What you’re up against
After-hours lobbies, plazas, and garages sit empty for sixteen hours a day. Trespass and vandalism threaten occupancy — and a scene in your lobby damages the building's brand.
What we put on your property
- AI camera monitoring of lobbies, plazas, and garage levels
- An operator acting within 3 minutes of every alert
- A recorded warning instead of a confrontation
- Drive-by vehicle patrol or drone sweeps where the site needs them
- Timestamped records for ownership review
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
Will anyone confront people in the lobby or garage?
No. No one from 911 Sentinel approaches or confronts anyone. An operator plays a recorded voice warning through the camera, then calls your building team, then police if your team doesn't answer in the time you set. In an emergency we call 911 right away.
What does after-hours monitoring cost for an office building?
Camera monitoring starts at $900/mo for one leased camera with an 8-hour daily window, and added cameras start at $250/mo. You get a firm price in writing after a free site walk, with no per-call fees.
Can you use the building's existing cameras?
Often, yes. Your own cameras are eligible if they give a live feed we can access. If not, we lease, install, and maintain eligible models such as the Reolink RLC-811A or Reolink Duo 3 PoE.
An example night
Office tower · plaza level
Loitering at the plaza, warned off by camera
A camera flags two people loitering at plaza level after hours. The alert reaches our team in seconds; the operator confirms they aren't on the authorized list and plays a recorded warning with the spotlights. They leave, and the incident closes with a timestamped report.
- Two people at plaza level, after hours
- Automated alert received
- Operator confirms: not on the authorized list
- Recorded warning, siren, and spotlights
- Both leave the plaza
- Timestamped report delivered
Plaza clear. No one confronted, no damage.
An example of how a typical night plays out, not a specific client's incident.
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