In 2002, there were an estimated 2,530,215 housing units in Washington, 2,358,892 of which were occupied; 64.3% were owner-occupied. About 61.2% of all units were single-family, detached homes. Electricity was the most common energy source for heating. It was estimated that 50,854 units lacked telephone service, 8,654 lacked complete plumbing, and 14,433 lacked complete kitchen facilities. The average household size was 2.51 people.
In 2002, 40,200 new privately owned housing units were authorized for construction. The median home value was $189,148. The median monthly cost for mortgage owners was $1,405. Renters paid a median of $710 per month. During 2002, Washington received more than $102 million in community planning and development aid from the US Department of Housing and Urban Development.