Fees & Services

Forensic Document Examination

  • Forgery Detection: A single item (e.g. one signature on a Will) is $550.00, and includes a written letter of opinion. Additional questioned items for the same case will be included for $150.00 each.
  • Anonymous letters: The fee will depend on the amount of questioned material (e.g. words or pages), and number of suspects.
  • Deciphering obliterated or illegible handwriting: The fee will depend on the amount of questioned material.

Expert Witness Testimony

  • Depositions: $900.00/day.
  • Court Appearances: $1,500.00/day.
  • (Travel expenses will apply, if outside the Portland, Oregon area.)

Trial Consulting

  • Trial Consulting is available for an hourly rate.


Brenda Anderson teaches the following class:

    Topics include: Conducting a Forgery Investigation, Anonymous Letter Solving, & Deciphering Crime Scene evidence.
  • Class length: 8 Hours.
  • $150.00 per student, includes course materials and case study testing.


Please call or email with the following information:

  1. Your name, phone number, and state or country.
  2. The number of questioned documents.
  3. The type of documents (example: questioned Will, anonymous letter, deciphering, etc.)
  4. The number of comparison samples that are available to you.
    (If the original documents are unavailable, good quality copies are acceptable.)
  5. Note: Please do not attach your documents with the initial e-mail inquiry.

Sending and Payment

  • Send the documents via e-mail, FedEx, UPS, or U.S. Mail.
  • Payment methods: PayPal, VISA, MasterCard, Discover, American Express, Cashier’s Checks, Bank Money Orders, and Postal Money Orders. Personal checks, and Western Union Money Orders are not accepted.
  • The PayPal links are not included on this website. A link for payment will be e-mailed to you.
  • All payments for document examinations are required in advance.
  • After the documents and payment has been received, the average turnaround time is 2-4 business days.

Letter of Opinion

  • The letter of opinion will be e-mailed upon completion, and a signed hard copy will follow in the mail, upon request. All original documents will be returned to you promptly.
  • The letter of Opinion will include a list of the documents submitted, the opinion, enlargements of the questioned and known handwriting samples, Brenda Anderson’s CV, and the ASTM Standard Guidelines.