The new owner bought the house in Sammamish in January for half the price paid in 2006, but KOMO-TV reported she hasn't been able to move in because Swift has not left the property.
A woman contacted by the television station said Swift couldn't talk because he was sleeping off some pills he had taken.
KOMO reported that Swift has gone past the grace period to move out. He has one last deadline before the new owner can request authorities to get involved.
Standing at more than 7 feet, Swift was drafted out of high school in 2004 by the Sonics. His tenure was plagued with injuries. He played with the Oklahoma City Thunder when the team moved, but was later dropped. He attempted to play in a lower basketball league before a stint in Japan.
In 2006, he bought the four-bedroom, 6,200-square foot home valued at $1.3 million. Swift had been drafted 12th overall by the Sonics in 2004 and signed a $4.4 million three-year contract.
Swift owed a balance of $1 million on the house last July, according to a foreclosure notice.
Phone numbers associated with Swift were disconnected. An email inquiry from The Associated Press was not immediately answered.
Information from: KOMO-TV, http://www.komotv.com/
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