Welcome to our agency

Gusdonevich and Associates Investigative Services is a full service licensed investigative agency primarily serving the Greater Pittsburgh area and western Pennsylvania, however our work has taken us across the United States and overseas. 


We provide a wide range of services to attorneys, corporations and the general public. Please take a few moments to review our site and see what we have to offer you.


John E. Gusdonevich, Jr.


How to reach us

Gusdonevich and Associates Investigative Services

603 Westchester Court

Carnegie, PA 15106-1539 (Near to Pittsburgh, PA)

Allegheny County

Owner:  John E. Gusdonevich, Jr.

Office:  412-276-1430

(Due to the volume of telemarketing calls to my office - calls from toll free area codes, along with blocked numbers will be automatically disconnected. I sincerely regret any inconvenience this may cause you).

Fax:  412-276-1432

Cell:  412-855-6714

Email:  gusinvestigates@verizon.net

Website:  www.gusinvestigates.com