Washington Letters of Guardianship is a legal document that is used to provide legal guardianship of a minor or incapacitated adult in the state of Washington. The document is signed by a judge and grants a guardian full authority to make medical, financial, educational, and other decisions on behalf of the individual. There are three types of Washington Letters of Guardianship: Guardianship of a Minor, Guardianship of an Incapacitated Adult, and Guardianship of a Minor with Property. Guardianship of a Minor is used when a minor needs a guardian to provide care and protection. Guardianship of an Incapacitated Adult is used when an adult is mentally or physically unable to make decisions for themselves. Guardianship of a Minor with Property is used when a minor has inheritance or other assets that must be managed.