Investigative Fees

Fees for services vary depending on the nature of the investigation. Some investigative fees are billed hourly and others are billed on a flat rate basis.

If we take your case, we work within your budget and you are always in control of how much is spent. Our office works against a retainer based on the estimate for services to be performed. When we come in under budget, the excess retainer is refunded.

For services such as general investigations and surveillance, an hourly rate usually applies. For other services such as locate and background investigations, most offten a flat rate fee applies.

If you have any questions, please feel free to contact us. Most consultations are done in a few minutes by phone.

(503) 575-2836

What we can do for you:

If we take your case, we will begin with a review of your objectives and then recommend an investigative plan to meet your needs. As the case progresses, we continually evaluate the information as it develops and reassess as is necessary. We keep you apprised of the developments as they occur by telephone, email or text.

We cannot make guarantees regarding the ultimate outcome of any investigation, nor do we makes any warranties, assurances or guarantees with regard to the work performed. Furthermore, fees paid to our office are not in any way contingent upon or related to the results of the services performed during the course of an investigation.

Investigation length:

The length of time it takes to conduct any given investigation varies by case. Typically, when we begin an investigation, it takes several days to begin receiving preliminary information. In cases such as locating individuals, turnaround time is usually a few days. However, more complex, detailed investigations can take longer. We will advise you of the anticipated time required to complete any investigation.


Our office works off of a retainer based on the estimated time, expense and complexity of any give case. When we deliver results under the retainer amount, the client is issued a refund for any balance.

Consultations are always

To speak directly with an investigator please call (503) 575-2836. We offer a FREE discreet consultations.


Our staff of licensed, experienced private investigators will handle all of your legal and personal investigative needs in the most professional, skilled, and cost effective manner.


Cornerstone Investigative Services, Inc. – Portland Private Investigators
One World Trade Center
121 SW Salmon St. Suite 1100
Portland, OR 97204

(503) 575-2836


Oregon State Lic. 69507

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