Creates the state affordable housing for all program in the department of community, trade, and economic development to achieve the goal of a decent, appropriate, and affordable home in a healthy, safe environment for every very low-income household in the state by 2020.

Requires the department of community, trade, and economic development, in consultation with the affordable housing advisory board created in RCW 43.185B.020 as recodified by this act, to prepare and annually update a state affordable housing for all plan, which must incorporate the strategies, objectives, goals, and performance measures of all other housing-related state plans, including the state homeless housing strategic plan required under RCW 43.185C.040 and all state housing programs.

Requires each county to convene a county affordable housing task force to prepare and recommend to the county legislative authority a county affordable housing for all plan and also to recommend appropriate expenditures of the affordable housing for all program funds provided for in RCW 36.22.178 (as recodified by this act) and any other sources directed to the county program.

Authorizes any county to decline to participate in the affordable housing for all program authorized in this act by forwarding to the department of community, trade, and economic development a resolution adopted by the county legislative authority stating the intention not to participate. If a county declines to participate in the affordable housing for all program a city or formally organized collaborative of cities within that county may forward a resolution to the department stating its intention and willingness to operate an affordable housing for all program within its jurisdictional limits.

Requires the department of community, trade, and economic development to contract with the employment security department to annually establish two self-sufficiency income standards based upon the cost of living, including housing costs, which include mortgage or rent payments and utilities other than telephone, for each county in the state.