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Private Investigator

Sun City, AZ

3.5/11 Reviews

Owner

Serving Sun City Area

Serving Sun City Area

What we believe... "We are in the business of helping good people overcome bad situations." David Reddell, Esteemed Criminal Defense Attorney "The credibility of witnesses and the verifiability of allegations are always at issue in litigation. That is not only our firm's particular expertise as investigators, but our legal and ethical due process obligation in the representation of our clients." Jack Palladino, Renowned San Francisco Private Investigator "Far too often, to be charged with a crime is to become something less than human." Jerome F. Buting, Illusion of Justice: Inside Making a Murderer and America's Broken System - Highly Distinguished Defense Attorney and Published Author

Additional Offices

CA Office

Brentwood, CA

+1(925)-813-2012

CA Office

Sebastopol, CA

+1(707)-634-3044

FL Office

Orlando, FL

+1(407)-250-5663

FL Office

Tampa Bay, FL

+1(813)-575-7300

FL Office

Tierra Verde, FL

+1(888)-824-4665

MD Office

Joppa, MD

+1(443)-563-1999

Languages

English
Member since May 2026
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Specialties & Services

Litigation SupportProcess ServingSecurity ConsultingSurveillance

Service Areas

Maricopa County, ArizonaContra Costa County, CaliforniaSonoma County, CaliforniaOrange County, FloridaPinellas County, Florida

About

We provide unarmed & armed security services, executive/close protection services, and we conduct private investigations.

Service Cities

Maricopa County, Arizona

Serves Phoenix, Mesa, Gilbert, Chandler, Glendale, Scottsdale, Peoria, and Tempe and 35 more nearby cities.

Contra Costa County, California

Serves Concord, Antioch, Richmond, San Ramon, Pittsburg, Walnut Creek, Brentwood, and Oakley and 42 more nearby cities.

Sonoma County, California

Serves Santa Rosa, Petaluma, Rohnert Park, Windsor, Healdsburg, Sonoma, Cloverdale, and Larkfield-Wikiup and 30 more nearby cities.

Reviews

3.5(11 reviews)
3.5

11 reviews

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4
M
Marysol R.

The guys that showed up were true professionals who handled an incident during o

The guys that showed up were true professionals who handled an incident during our event. Kind yet setting a tone to not let our event get out of hand. Management was quick to respond and fair priced our event. Will hire again.

This review was left on Yelp and was not independently verified by NearbySpy

via Yelp
G
Gail W.

We used Beresford Investigations on a couple of occasions to check into differen

We used Beresford Investigations on a couple of occasions to check into different matters for us. Robert is very reliable in getting back to you when you leave a message if he is not available--which is very important these days. Robert has a polite and professional manner and is patient and understanding when listening to your particular case and getting all the details. He is very conscientious about his work, and was prompt in investigating our case, and gave us excellent advice on how to proceed. We felt that Robert always had our best interest at heart.

This review was left on Yelp and was not independently verified by NearbySpy

via Yelp
O
Omar A.

The worst service ever , so unprofessional people and management, it was the fir

The worst service ever , so unprofessional people and management, it was the first time and last time to hire them for my concert

This review was left on Yelp and was not independently verified by NearbySpy

via Yelp
J
Jemina E.

zero communication, unreliable company. The staff has a bad attitude.. they will

zero communication, unreliable company. The staff has a bad attitude.. they will take your money and leave you hanging. Do not hire.. it's the worst company. Very unprofessional.

This review was left on Yelp and was not independently verified by NearbySpy

via Yelp
W
W A.

Unprofessional, zero communication. Not reliable.. bad customer service. Ripoff

Unprofessional, zero communication. Not reliable.. bad customer service. Ripoff company.

This review was left on Yelp and was not independently verified by NearbySpy

via Yelp
W
W A.

unprofessional. Unreliable. Miserable customer service.. do not hire. The worst

unprofessional. Unreliable. Miserable customer service.. do not hire. The worst company ever. zero communication.. they have no common sense. Terrible company.

This review was left on Yelp and was not independently verified by NearbySpy

via Yelp
G
Gabrielle D.

Beresford is honest, reliable, and takes the time to review his client's situati

Beresford is honest, reliable, and takes the time to review his client's situations and requests. I had a free consultation with him on the phone for 30 minutes and he gave me helpful websites to refer me to a PI that is specialized in the job that I was looking for. He's not out to take your money, rather he always has the best interest for those who need help. Thank you so much Beresford! If I need a PI for criminal defense, I now know where to go.

This review was left on Yelp and was not independently verified by NearbySpy

via Yelp
J
John L.

I have used this company in years past for a undercover operation that involved

I have used this company in years past for a undercover operation that involved a discrimination case against our handicapped son with the city services. Is undercover work and audio recordings along with knowledge of how to properly gather information led to a win for us. Thank you Robert Beresford.

This review was left on Yelp and was not independently verified by NearbySpy

via Yelp
C
Cross L.

Robert is very experienced! After talking to him for 5 minutes you can tell this

Robert is very experienced! After talking to him for 5 minutes you can tell this is your guy. Over 22 years experience. Very knowledgeable and honest! I can't say enough about him. If you are looking for a criminal defense investigator look no further. You can thank me later. I can't say enough good things about him. He took the time to answer all my questions and even answered questions I never thought to ask.

This review was left on Yelp and was not independently verified by NearbySpy

via Yelp
R
Richard B.

Very professional, conscientious, knowledgeable and effective for my trivial-but

Very professional, conscientious, knowledgeable and effective for my trivial-but-sensitive personal matter. Also, Robert's policy is to hold off on collecting fees unless&until he knows he can get the job done! Robert's a good egg!

This review was left on Yelp and was not independently verified by NearbySpy

via Yelp