Washington State· 24/7 Response· Advanced Training
Professional Protection for the People who Run Western Washington
Diligence Security protects people first — through structured Mobile Patrols, On-site Officers, and Rapid Emergency Response across Pierce, King, Thurston, Kitsap, and Snohomish Counties and most of the Puget Sound.
What we do
Targeted security operations across Western Washington
From rapid emergency deployments to dedicated daily coverage, we protect commercial, industrial, and residential properties throughout the Puget Sound.
24/7 Mobile Patrols
GPS-tracked, randomized patrol routes that turn parking areas and perimeters into hard targets.
On-site Security Officers
De-escalation-trained, uniformed officers who hold access control and keep your site calm.
Emergency Fire Watch
Certified, documented fire watch that keeps you open and compliant when systems go down.
24/7 Rapid Response
Immediate deployment for alarms, breaches, and urgent threats — with local supervisors nearby.
Event Security
Professional coverage for private, corporate, and community events, built around access control.
Explore all services →The Diligence Security difference
A disciplined alternative to standard security firms
We combine local leadership with high-tech accountability for owners and managers who need documented results — not a name on a clipboard.
GPS-tracked & documented
Every patrol and inspection is GPS-verified, with digital reports and photos shared with your Team in real time.
Local, rapid deployment
Headquartered in Puyallup, our Supervisors are rarely more than 45 minutes from your site.
Advanced Officer training
Officers receive far more than the industry standard through our Officer Integration Program, emphasizing de-escalation and disciplined decision-making.
Compliance-ready
Documented protection that satisfies Fire Marshal, regulatory, and insurance requirements.
Specialized sectors
Protection built around your real-world risks
We tailor coverage to the specific threats your facility faces. Explore the Industries We Serve.
Industrial, Maritime & Logistics
Gate control, trailer seal verification, and perimeter oversight from the Port of Tacoma to the logistics hubs of Kent and Everett.
Commercial & Residential
Concierge-level, de-escalation-trained Officers for HOAs, high-rise developments, and regional retail centers.
Events & Compliance
Documented Fire Watch for construction sites and professional Event Officer coverage for corporate gatherings.
Where we work
Serving the greater Puget Sound region
High-visibility patrols and dedicated On-site Security across five counties — Pierce, King, Thurston, Kitsap, and Snohomish. Choose a region to see our local coverage.
Seattle · Bellevue · Redmond · Kirkland · Renton · Auburn · Federal Way · Tukwila · SeaTac · Shoreline
Tacoma · Puyallup · Lakewood · University Place · Gig Harbor · Edgewood · Spanaway · Parkland · Bonney Lake · DuPont
Everett · Lynnwood · Edmonds · Marysville · Mukilteo · Lake Stevens · Snohomish · Mill Creek · Monroe · Arlington
Bremerton · Bainbridge Island · Poulsbo · Silverdale · Port Orchard · Kingston · Manchester · Suquamish
Olympia · Lacey · Tumwater · Yelm · Centralia · Rainier · Rochester · Grand Mound · Nisqually · Tenino
Protect your people with a Team you can trust and verify.
Request a professional site evaluation or immediate emergency deployment. Local Supervisors respond fast across the Puget Sound.