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Inter-State Investigative Service Inter-State Investigative Services specializes in delivering accurate information obtained from a huge range of sources in order for our customers to make important legal and business decisions. Our practice is limited to delivering services to attorneys, businesses and insurance firms, although we do consult with individuals on a case by case basis.
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Reviews (9)
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South Coast Shopper
Nov 04, 2021
Brandy and her team worked tirelessly to get the paperwork signed and notarized with the utmost professionalism. I would highly recommend them to anyone needing special services. They also had the best pricing for their work.
Michelle Sandoval
Jun 18, 2021
Randy and his team have always provided professional and accurate information with cases. They provided excellent information and communicate with me as soon as information becomes available. I appreciate all their hard work and dedication provided by Inter-State Investigative Services. This is an office that goes above and beyond for their clients. Thank you for always being in my corner :
Review Mail
May 31, 2021
We worked closely with Inter-State for a very difficult family matter a few years ago and the team did an absolutely incredible job. From start to finish, they did all the right things. We had the outcome we desired with a huge thanks to this amazing group of talented investigators.
Kenny S.
Nov 25, 2020
Inter-State helped me find my deadbeat ex wife in Houston in under a week. They set even arranged to have her served with court doc through a third party process server. Despite going over my retainer, Inter-state waived the remainder of the fees. I would recommend them to anyone that needs help.
Marla Barefield-Pazzi
Jan 12, 2020
We highly recommend Inter-State Investigative services. Randy Downer and his team were attentive and prompt at identifying the problem. Not knowing what to do, they guided us expertly through a very difficult situation with a quick professional manner. Their surveillance was efficient, stealthy and successful in capturing the images we needed to present in court.

They obtained documents, conducted interviews, and summarized the findings. Randy and his staff eased our anxiousness with empathy and efficiency in responding to all of our calls and emails. The work and the evidence Randy's team produced made the difference in our case. We will be eternally grateful to Inter-State Investigative Services.
Daniel Child
Dec 23, 2019
These guys are great! I worked with the Tucson office and specifically with Randy and Lisa - both provided honest feedback and kept me up to date on the work I had requested. Though the situation was not pleasant, they were able to push through and find the information and details I needed from them. They were both always pleasant, professional and cost effective. If you need investigate work performed, I recommend Inter-State Investigative Service above all others I have had to use in the past! Especially Randy and Lisa!
Chris Chaffon
Oct 26, 2019
Real deal here. The team here is incredible, professional, caring and won't stop until the job is done. I have used them several times and they are the best you can get. I owe them a lot and highly recommend!
Michael Bloom
Dec 29, 2017
I am an attorney practicing criminal defense in Tucson. Having an outstanding private investigator is essential to my business. I could not run my practice without one. I have been working with Inter-State Investigative Services for over a decade. I use them to locate and interview witnesses, to do background checks on witnesses for the other side, photography work, and other services.

They perform everything that an outstanding investigative service should to achieve the quality of service I seek to provide my clients. There are several reasons why, for me, Inter-State Investigative Services is really the only choice. Foremost, is their reliability and professionalism. When they tell me that they have identified a witness, testimony, or other evidence that relates to my case, I know that I can count on it.

When I need an investigator from Inter-State Investigative Services to testify at trial to present their work, it will be done in a professional manner. Their work is always timely. If I give them a deadline, they will meet it. They provide information to me in memos that are well written and in exactly the format that I like. Inter-State's billing is fair and reasonable.

In those rare circumstances when I have had a question about a bill, they have been willing to discuss it with me and reach a reasonable resolution. If you need an investigator in Southern Arizona, Inter-State Investigative Services is the only choice. Michael J. Bloom
Lori Petersen
Jan 21, 2017
During the 30+ years that I practiced law, I used this investigative team exclusively. I used them for significant matters (such as surveillance, witness interviews, scene diagramming and photographing) as well as minor matters (such as finding a witness). This company is simply top notch. I was never tempted to try a different investigative company.

The work was always completed well in advance of my due date, the assigned investigator always followed up to make sure I had received all the information I needed, and their fees were always reasonable. This company truly understands customer service.