Private Investigators Oregon

McDonald & Associates Services Oregon State

Mailing Address:
PO Box 44607
Tacoma, WA 98448

Phone: (971) 803-5904
Fax: (888) 789-8060

Business Hours:
Monday- Friday, 8AM to 5PM
Saturday – Sunday, Closed

private investigators oregon

Licensed and experienced

McDonald & Associates investigators pass all stringent state licensing requirements, and we have some of the longest employee retention in the business. This is an important detail to consider if there is a possibility of case contention. New techniques, problems, and solutions are discussed and shared amongst the agent group to broaden their knowledge. We do not out-source assignments to contract investigators or part-time entrepreneurs and use only our own licensed investigators. Our quality of service can only be maintained by using employees trained to our premier standards.

McDonald & Associates handle local investigative issues in Portland as well as Salem, Eugene, Gresham, Hillsboro, Beaverton, Bend, Vancouver, Washington and more.

Contact Us For a FREE Consultation

Give us your questions. We’ll find the answers.

If you need questions answered, we can help!

McDonald & Associates service private investigations in multiple states including Oregon, Washington, Idaho, Alaska, Arizona, Nevada, Texas, and California.

Get the help you need today. Free Consultation!

Have a question about our services?

To learn how our private investigators can help you, or to discuss opening a case, call our Oregon office at (971) 803-5904 or toll-free (888) 539-1535.

You can also inquire by filling out the form.

Our Customers’ Reviews

I use McDonald & Associates to investigate fraudulent insurance claims. They do a very good job and have been around forever. If you want investigators with a proven track record and lots of experience, these are the guys.

– Ben Gagne

He signed a settlement agreement for resignatio instead of termination only! That surveillance paid for itself!

– Molly

Commonly requested investigations and services

Marital Issues

Is your husband cheating? Do you need evidence?  A private investigator may be able to provide you with the evidence of infidelity, drug use, gambling, or other illegal/immoral activities. These findings can be utilized to help a court case or initiate action from police.

Child Custody/Support

Are you seeking information that can help with your custodial arrangement? Our private investigators perform surveillance to ensure that neglect or abuse is not taking place while the child is in the care of the other parent or caretaker. Custodial investigations may also involve ensuring that the terms and conditions of the arrangement are being strictly adhered to.


Concerned about your loved ones and how well they are being cared for? Our private investigators in Puyallup are able to perform thorough background checks and conduct surveillance on caregivers for children, seniors, and even pets.


Worried about being stalked by an ex-lover, ex-spouse, co-worker or another individual? McDonald & Associates can confirm your suspicions and gather evidence to share with the proper authorities.