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Private Investigators in Seattle, WA

We bring closure and peace of mind

Investigation Services You Can Trust

McDonald & Associates is a professional organization that provides cost-effective investigative services to clients who are combating fraudulent and exaggerated claims. We have served the Greater Seattle area for decades and we pride ourselves on being the largest private investigative firm in the Northwest. 

Each metropolitan area has complications that make private investigations a challenge and Seattle is no different. Seattle has been a center for rapid growth over the past several years, creating larger crowds and more construction. Our private investigators know these challenges and have the experience necessary to navigate them.

Common Seattle Private Investigations

Marital Issues

Marital issues are always sensitive matters. Infidelity, illegal drug use and other immoral behaviors might play a role in the disintegration of a marriage. If your spouse is participating in these behaviors, a private investigator can provide evidence that can be used in court or for other necessary actions.

Child Custody/Support

Our private investigations can help you determine if abuse is taking place while your child is in the care of another parent or caretaker. These custodial investigations can also ensure that the terms and conditions of your arrangements are being followed.


With McDonald & Associates, you can have a private investigator perform background checks on caretakers and conduct surveillance to make sure that your children, seniors or pets are being properly cared for. 


If you fear that you are being stalked by an ex-spouse, co-worker, ex-lover or anyone else, our private investigators in Seattle can confirm and provide evidence to share with the authorities.

Get the help you need today from our Seattle private investigators.
Free Consultation!

Have a question about our services in Seattle?
To learn how our Seattle private investigators can help you, or to discuss opening a case, call (206) 309-8737 or toll-free (888) 539-1535.
You can also inquire by filling out our Contact Page form.

Private Investigation Firm with 25 years Experience


Areas We Serve

Below are just a few of the neighborhoods we serve in the Seattle, WA area:


Services We Offer

Seattle Private Investigators Blog

Learn more about how our private investigators can help you!

Detective Agency in Seattle Helping With Investigations

Detective Agency in Seattle Helping With Investigations

Law enforcement has a great responsibility to manage resources used to handle pressing matters that affect public safety. With this being the case, you may often find that investigators at your local police department are slow to act on your inquiries. This may be for...

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We investigate child support cases

We investigate child support cases

We all know that as parents we should be responsible for our children. When people get divorced, they are still responsible for the children and in the case of a parent who loses custody of his or her children, it is required that they pay child support so that their...

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Seattle Private Investigator

Seattle Private Investigator

There are too many fraudulent insurance claims making the rounds these days and the only way to get them resolved in a timely manner is to hire a private investigator in Seattle. Our private investigators will look into your case and provide you with any evidence they...

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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