Requires the Washington institute for public policy, in collaboration with the department of social and health services and other applicable entities, to undertake a search for a validated mental health assessment tool to be used by designated mental health professionals when undertaking assessments of individuals for detention, commitment, and revocation under the involuntary treatment act. This requirement expires June 30, 2011.

Authorizes designated mental health professionals, when making a determination for initial detainment, to consider information provided by family members, landlords, neighbors, or others with significant contact and history of involvement with the person.

Requires an evaluation and treatment facility or state hospital to provide notice of the discharge of a person subject to an involuntary commitment order to the designated mental health professional office responsible for the initial commitment and the office that serves the county in which the person is expected to reside.

Requires the department of social and health services to maintain and make available an updated list of contact information for designated mental health professional offices in the state.

Addresses payment of legal financial obligations, restitution, and the victim's penalty assessment.

Provides that certain sections of the act are null and void if appropriations are not approved.