2026 Ranking

Best Security Companies in Upland

Ranking of the best private security companies in Upland, California. The order prioritizes verified state licensing, track record and verified reviews; profile views and recommendations only fine-tune the order.

Verified state license Real user views 50 companies in Upland

We're still gathering recommendations and verified customer reviews in Upland. In the meantime, the order is based on license status and profile views.

Top-ranked companies in Upland

1
AI
ADAMS INVESTIGATION SERVICES LLC
State Licensed
Upland
Private Investigation
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Licensed
2
AO
ALL OUT INVESTIGATIONS
State Licensed
Upland
Private Investigation
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Licensed
3
AA
AMERICAN-1 AIRTIGHT SECURITY COMPANY
State Licensed
Upland
Security GuardsEvent SecurityResidential & HOA Security+7
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Licensed
4
AI
ARCANE INVESTIGATIVE SERVICES, LLC
State Licensed
Upland
Private Investigation
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Licensed
5
AS
ASHLEY SILVER INVESTIGATIONS
State Licensed
Upland
Private Investigation
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Licensed
6
BS
BAKER SYSTEMS
State Licensed
Upland
Alarm MonitoringVideo Surveillance & CCTVAccess Control
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Licensed
7
BI
BEACHMASTER INVESTIGATIONS
State Licensed
Upland
Private Investigation
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Licensed
8
CL
CALVIN L BUTLER
State Licensed
Upland
Private Investigation
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Licensed
9
CP
CARR P.I.
State Licensed
Upland
Private Investigation
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Licensed
10
DE
DANIAN ENTERPRISES, LLC
State Licensed
Upland
Private Investigation
Get quotes in Upland
Licensed

All state licensed security companies in Upland

50 companies with a verified, active state license, ranked by track record and reputation. All checked against official license records.

Ranking methodology

The order reflects real, verifiable signals that are hard to manipulate. Companies with a verified state license appear first; within that group we prioritize the best-reviewed (verified reviews) and the most established according to official records. Profile views and community recommendations only fine-tune the order — a couple of votes can't move positions. For each company we show exactly which signals back its position.

State license — we verify each active license against state licensing boards like California BSIS and Illinois IDFPR. Licensed companies appear first.
Real profile views — how many people viewed the company's profile over the last 30 days.
Community recommendations — user votes with anti-fraud controls (fingerprint dedup).
Verified customer reviews — customer rating and review volume, when available.

Looking for more options in Upland?

Browse the complete directory with all 50 private security companies listed in Upland, filter by service type and compare pricing.

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Security services in Upland

Security Guards en Upland Armed Security Guards en Upland Mobile Patrol en Upland Event Security en Upland Fire Watch Services en Upland Executive Protection en Upland K9 Security en Upland Loss Prevention & Retail Security en Upland Corporate Security en Upland Warehouse & Industrial Security en Upland Residential & HOA Security en Upland Construction Site Security en Upland Alarm Monitoring en Upland Video Surveillance & CCTV en Upland Access Control en Upland Private Investigation en Upland Armored Transport & Cash-in-Transit en Upland Security Consulting en Upland

More about private security in Upland

Directory of UplandAll security companies, with search and pagination.State Licensed in UplandOnly companies with an active state license.

See all security companies in California

Frequently asked questions

What are the best private security companies in Upland?

Top companies in Upland include ADAMS INVESTIGATION SERVICES LLC, ALL OUT INVESTIGATIONS, AMERICAN-1 AIRTIGHT SECURITY COMPANY, ARCANE INVESTIGATIVE SERVICES, LLC, ASHLEY SILVER INVESTIGATIONS, based on their active state license and the volume of profile views and community recommendations on HireSecurityNow.com. The order updates continuously based on these signals.

How is the ranking of security companies in Upland determined?

Companies with a verified, active state license appear first, checked against official licensing board records like California BSIS and Illinois IDFPR. Within that group, the order reflects real profile views over the last 30 days, community recommendations (with anti-fraud controls) and verified customer reviews when available.

Are the ranked companies state licensed?

We verify each company's license status against official state licensing board records. Each company's profile shows its license number and status when it holds an active license.

How do I hire one of these companies in Upland?

You can get free quotes from any company in the ranking: open its profile, submit a quote request with your requirements and you'll receive proposals directly. All quotes are free and come with no obligation.

How many security companies are listed in Upland?

Our directory lists 50 companies in Upland, California. You can browse the complete list in the Upland security companies directory.

Best Security Companies in Upland

Top-ranked companies in Upland

ADAMS INVESTIGATION SERVICES LLC

ALL OUT INVESTIGATIONS

AMERICAN-1 AIRTIGHT SECURITY COMPANY

ARCANE INVESTIGATIVE SERVICES, LLC

ASHLEY SILVER INVESTIGATIONS

BAKER SYSTEMS

BEACHMASTER INVESTIGATIONS

CALVIN L BUTLER

CARR P.I.

DANIAN ENTERPRISES, LLC