Washington State Petition to Modify Child Custody and/or Child Support - Paralegal Service

To have a paralegal modify only your Child Support, see: Child Support Modification

By Do It Yourself Documents,
Independent Paralegal Services

This service is available for all counties in Washington State and may be completed via the internet or at one of our offices.

Does not include court cost. Court costs are $260.00 in Washington State. If the children still live in the same county where the original plan or order originated, court cost is $56.00.

  • Washington State
  • By An Independent Paralegal
  • List Price: $169.95 - This service is exempt from sales tax.
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Service Agreement

Petition to Modify Child Custody or Modify Child Custody & Child Support

Do It Yourself Documents has helped hundreds of clients complete their documents for a Petition to Modify Custody/Residential Schedule/Parenting Plan and/or Child Support Order since its founding in 2001.

Simply download the questionnaire and return it to us via secure email and file transfer, drop it off or mail it to one of our offices, or return by fax.

Additional Costs
Download a Questionnaire

Quick Online Service

This is our quick online service. You will be directed to a secure form where your information is encrypted prior to leaving your browser. You do not need to log in and create an account. Your information is not kept in any database. Your information is disposed of as soon as you have received and reviewed your documents. No information received from you will ever be released to a third party.


Download a Questionnaire

While completing the questionnaire in the comfort of your home, help is just a click away for an instant chat with one of our paralegals standing by to assist you with any questions. See hours of chat beneath the "Click Here to Chat With US" command button located in the right column of each web page. Alternatively, you may call us toll free at (866) 946-0325.

Download a fillable questionnaire with no obligation or payment until you are ready to have us complete your documents.

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When you are ready for us to prepare your documents return your questionnaire using secure email or file  transfer. Or you may mail, fax, or drop it off at one of our offices. (888) 377-2397.

Once you return your questionnaire, we will call you with any questions and for payment or you may pay online using our secure cart-server. This option is available in the right column. When we call you we will schedule an appointment, usually within 24 hours or address emailing your documents to you for review. If you have any questions, please call us at (866) 946-0325.