What mobile patrol costs.
Hourly patrol rates from Washington's statewide guard contract, area by area, next to a camera vehicle that records every pass.
How much does mobile patrol security cost?
A guard with a patrol vehicle in Seattle costs about $12,750 a month for 8 hours a night on Washington's state guard contract: a median $38.55 an hour for the guard plus $13.85 for the vehicle. Contract mobile patrol runs $43.18 to $49.35 an hour. 911 Sentinel's camera-vehicle patrol starts at $1,500 a month drive-by, $2,200 on site.
Patrol that records every pass
A guard with a patrol vehicle costs about $12,750 a month for 8 hours a night at the Seattle contract medians. 911 Sentinel drive-by vehicle patrol starts at $1,500 a month: our camera vehicle runs your lots, gates and fence lines on a schedule set at the site walk, its four-camera roof rig watched live by AI and our team. For repeat overnight trouble, on-site vehicle patrol keeps the vehicle on the property from $2,200 a month. Anything it finds goes to your team, then the police.
What does a guard with a patrol vehicle cost by area?
Most guard companies on Washington's statewide contract bill a patrol vehicle as an add-on to the guard's hourly rate. This is what the two cost together at each area's median.
| Area | Guard per hour | Vehicle per hour | Together | 8 hours a night |
|---|---|---|---|---|
| Seattle (city limits) | $38.55 | $13.85 | $52.40 | $12,750 |
| King County | $38.59 | $13.88 | $52.47 | $12,770 |
| Snohomish County | $37.06 | $15.65 | $52.71 | $12,830 |
| Pierce County | $36.53 | $12.29 | $48.82 | $11,880 |
| Tacoma (city limits) | $36.53 | $12.29 | $48.82 | $11,880 |
| Kitsap County | $36.53 | $10.47 | $47.00 | $11,440 |
| Thurston County | $35.57 | $10.70 | $46.27 | $11,260 |
Medians across the companies that price each line by the hour in that area (9 to 16 companies). Monthly figures are the hourly rate times the hours, times 365 days, divided by 12, rounded to the nearest $10.
Other patrol lines on the contract
- Mobile patrol and alarm response: ALK Global Security lists a marked vehicle with an unarmed guard at $43.18–$49.35 an hour in Seattle, about $10,510–$12,010 a month for 8 hours a night.
- Alarm response only: ALK lists a flat $56.55–$87.40 per response.
- The vehicle by the month: companies that bill the vehicle monthly charge a median of $1,539 a month in Seattle, on top of the guard's hours.
- Short notice: the contract's rapid-response rate for an unarmed guard in Seattle has a median of $54.26 an hour.
911 Sentinel prices
| Service | What it is | From | Set at the site walk |
|---|---|---|---|
| Camera monitoring | Leased cameras watched live, with a recorded warning, siren and spotlights | $900/mo | Cameras and hours |
| Drive-by vehicle patrol | A camera vehicle with a four-camera roof rig passing your lots, gates and fence lines on a set schedule | $1,500/mo | Route, passes per night, access points |
| On-site vehicle patrol | The camera vehicle stationed on your property, with periodic loops | $2,200/mo | Hours on site, layout, loops per night |
No per-call fee. A 30-day free trial, then month to month with one month's notice.
What does a camera vehicle add?
- Four cameras on the roof rig record every pass in every direction, so the record covers the whole route.
- AI and our team watch the rig's cameras live and make every call.
- Findings go to your team first, then the police if no one answers; 911 right away in an emergency.
- Every pass is recorded and logged, so you can see what the property looked like each night.
- Nobody from 911 Sentinel approaches or confronts anyone.
Common questions
How much does mobile patrol cost per month?
911 Sentinel drive-by vehicle patrol starts at $1,500 a month and on-site vehicle patrol at $2,200. On Washington's statewide guard contract, an unarmed guard with a patrol vehicle in Seattle comes to about $12,750 a month for 8 hours a night at the median rates.
Is mobile patrol cheaper than a security guard?
Yes. 911 Sentinel drive-by vehicle patrol starts at $1,500 a month, against about $9,380 a month for one unarmed guard on post 8 hours a night at the median Seattle state contract rate.
What is the difference between drive-by and on-site vehicle patrol?
Drive-by vehicle patrol passes the property on a set schedule; on-site vehicle patrol keeps the camera vehicle stationed on the property for the hours you set, with periodic loops of the lots, gates and fence lines. Both record on a four-camera roof rig watched live by AI and our team.
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