Best Private Investigators near Upland, CA

2 of these agencies are based in Upland; the others serve Upland from towns including Rancho Cucamonga (5 mi), Riverside (20 mi) and Glendora (11 mi).

3 open 24/7 · 13 open weekends · 19 rated 4.5+ · 9 show a license

Data verified October 18, 2026

Clete Security Services, Esq.

Clete Security Services, Esq.

(12)
  • Patrols
  • Company
“Currently, Clete Security Services, provides our Church/Preschool with early morning and evening patrols, primarily to provide a safe environment for our staff & volunteers as they begin/end their day.”
Coupons & Offers
In Business Since 2020
154-A W Foothill Blvd #370, Upland, CA
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Fugitive Recovery Agent

Fugitive Recovery Agent

(1)
“No fuss”
Upland, CA
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Bosco Legal Services

Bosco Legal Services

(18)
  • Job
  • Asset
  • Company
“Not only did they go way above and beyond, they also were very understanding of my newbie and clueless status, very helpful and very accommodating to my communication needs.”
Licensed
Free Initial Consultation
In Business Since 2005
Family Business
4651 Brookhollow Cir Suite C, Riverside, CA
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Tag Force Security & Patrol Services

Tag Force Security & Patrol Services

(3)
“This company is so great the supervisor is someone who will do the most for you and asks for a tiny return just show up and do your job I am so greatful and so blessed to be there thank you Tagforce”
Licensed
Free Initial Consultation
In Business Since 2007
Serving Upland Area
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Pyrocop

Pyrocop

(1)
“Called for sprinkler products, which they don't sell, but unlike most other places I called, he used his expertise answering a few questions and helped me find them.”
In Business Since 2005
9431 Haven Ave suite 210, Rancho Cucamonga, CA
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A Pineda Polygraph Services

A Pineda Polygraph Services

(1)
“Even though I gave him a hard time due to stress was extremely helpful and he possibly saved my marriage of 8 years.”
Accepts All Major Credit Cards
Emergency Services
In Business Since 1985
345 W Foothill Blvd Suite D, Glendora, CA
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The 24 agencies on this page are the private investigators listed for Upland, CA. What each one states about its license, its specialties and the areas it covers comes from its own website; ratings and quotes come from public reviews.

Area overview: Upland, CA

22 of the 24 agencies on this page have a rating, from 3.9 to 5.0 across 266 reviews; 1 has 50 or more reviews and 19 are rated 4.5 or higher. 3 are open around the clock; 13 are open on Saturdays and 8 on Sundays. 9 show a license on their websites and 3 have a BBB rating of A or A+. 13 have ten or more years of experience, the longest 62 years. 3 offer urgent consultations; 1 offers remote or virtual consultations; 7 offer a free initial consultation; 2 are family- or locally-owned and 1 lists coupons or special offers. We have a website on file for 23 of the agencies on this page; 15 publish a contact page and 12 list a public email. We count these figures across the agencies on this page; distances are straight-line, and hours and prices change, so confirm the details with the agency before you book.

Why are investigation agencies outside Upland shown here?

2 of the 24 agencies have an address in Upland. The others come from other towns. Investigators travel to the subject, so an office one county over is rarely the issue. State licensing is the thing to check.

Stone Investigation Services

Stone Investigation Services

(2)
“Has made a big difference in our cases.”
Free Initial Consultation
Family Business
In Business Since 2023
16155 Sierra Lakes Pkwy #160-126, Fontana, CA
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Inland Professional Investigations

Inland Professional Investigations

(4)
“If you are seeking a private investigator don't hesitate contacting Inland Professional Investigations.”
Licensed
In Business Since 2023
Serving Upland Area
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PAX Investigations

PAX Investigations

(4)
  • Attention
  • Team
“I have utilized their services on multiple occasions and each time I have been throughly impressed with the professionalism and attention to detail their team has brought.”
Licensed
In Business Since 2022
Serving Upland Area
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Smarthire

Smarthire

(1)
“Back ground checks and private investigating”
In Business Since 1964
2250 Lindsay Way, Glendora, CA
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XPD Investigations

XPD Investigations

“XPD Investigations conducts background checks of applicants for the positions of Police Officer, Deputy Sheriff, Firefighter, Private Security, Dispatcher, as well as Civilian positions within Southern California.”
Licensed
In Business Since 2014
7349 Milliken Ave Ste. 140-111, Rancho Cucamonga, CA
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Joe Mar Polygraph & Investigation Services

Joe Mar Polygraph & Investigation Services

(4)
“This is the second time I had to do finger prints because the other place did something wrong.”
Licensed
In Business Since 2019
Serving Upland Area
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Cobalt Consulting and Investigations

Cobalt Consulting and Investigations

“Our Investigators expertise include; Anti-piracy, Computer Forensics, Corporate Investigations, Employment Backgrounds, Litigation Support Services & Strategies, Threat Assessment, Executive Protection, Work Place Violence, Workers Compensation Inves...”
Accepts Paypal
In Business Since 2014
Serving Upland Area
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Streamline Investigations

Streamline Investigations

“Find out how an insurance fraud investigation is conducted and learn about types of insurance fraud, including car, health, home, life, insurance company, and workers compensation fraud.”
In Business Since 2003
6649 Amethyst Ave #9094, Rancho Cucamonga, CA
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Peterson Investigations

Peterson Investigations

(50)
  • Team
  • Integrity
  • Feel
“With a track record that speaks volumes about their commitment to excellence, Peterson Investigations has earned a reputation as the go-to agency for individuals and businesses seeking trustworthy and effective investigative solutions.”
Free Initial Consultation
In Business Since 2015
Serving Upland Area
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Brapga Security Systems

Brapga Security Systems

(15)
  • Thanks to Them
  • Homeless
  • Company
“I called a few days ago and spoke with Santos, he gave me good information, he was interested in an event service, he explained its security structure very well and finally we reached an agreement, the day of the event arrived and I was satisfied.”
Emergency Services
In Business Since 2016
Serving Upland Area
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Lockjaw Legal Process Services

Lockjaw Legal Process Services

(5)
  • Company
“Now I understand "LOCKJAW" they wont stop until the job is done.”
BBB Rating: A
Free Initial Consultation
In Business Since 2021
Serving Upland Area
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Excaliber Investigations

Excaliber Investigations

(1)
“Reliable, trustworthy and highly recommended investigated service.”
BBB Rating: A+
In Business Since 1994
1440 W Hillandale Ave, La Habra, CA
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Schubert Investigations

Schubert Investigations

(24)
  • Expert
  • Know
  • Expectations
“I would like to thank him individually and the entire company for delivering such outstanding and professional service for their clients and know that this brief review cannot encompass the full experience of being helped when so many other people ha...”
Serving Upland Area
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Discreet Services

Discreet Services

(1)
“Very responsive, quality work product”
Licensed
Transparent Fees & Pricing
In Business Since 2018
Free Initial Consultation
Serving Upland Area
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LP Solutions Private Investigators

LP Solutions Private Investigators

(5)
“Court proceedings can be a very stressful and sometimes overwhelming, but adding Denise to your team can help alleviate your worries because she is such a great asset.”
Licensed
Accepts Check, Paypal, Cash, Debit
In Business Since 1986
Free Initial Consultation
Serving Upland Area
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California Recovery Investigations

California Recovery Investigations

(7)
  • Process Server
“I was having some questions about whether or not my significant other was stepping outside of our relationship, so I hired Kevin at California recovery investigations.”
Emergency Services
In Business Since 2019
302 N 1st Ave Suite 3, Arcadia, CA
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Elevate Investigations

Elevate Investigations

(6)
  • Background Check
  • Information
“She provided a professional, caring, and comfortable experience throughout the whole process.”
Licensed
In Business Since 2023
2271 W Malvern Ave #94, Fullerton, CA
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RJN Investigations

RJN Investigations

(1)
“Extremely knowledgeable, pointed me in the right direction.”
Remote Consultations Available
30+ Years Experience
Serving Upland Area
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Private Detective Services in Upland, CA Cost Estimates

Minimum cost
$337
Maximum cost
$10658
National Average
$1347
Avg Per Hour Rates
$141
$786
$2244
Average price range is based on 267 cost profiles
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Average Cost $1347
Minimum cost $337
Maximum cost $10658
Avg Per Hour Rates $141

Average range $786 to $2244 is based on 267 cost profiles.

Why these companies made our list

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