The sheriff's office says Byron Barton and his wife and adult son were arrested about 8 a.m. Friday on trespassing charges but not held. Barton was taken by ambulance to the Seattle VA Hospital because of his health condition.
A moving crew arrived later and began removing the Bartons' furniture and other belongings.
The family also was evicted last month but moved back in with the help of supporters.
Sheriff King County Sheriff John Urquhart says, "There are no winners in this situation."
He says the lawful owner of the home has been the "victim of bureaucratic inaction" and he "won't let politics ride roughshod over the rule of law."
The home, previously owned by Byron Barton's mother, has been in the family for more than 60 years. Byron Barton grew up there and was married there.
Court records show the Bartons mortgaged their home in 2007, then subsequently refinanced the loan and took out a home equity line of credit, with loans totaling over $650,000.
The Bartons stopped making payments, apparently in 2011, and they defaulted on those loans. The Bartons filed two lawsuits in federal court to stop foreclosure actions, but both were dismissed.
After the trustee's sale of the property, the Bartons filed another lawsuit in state court, asking to void the foreclosure and for damages of $4.8 million and other miscellaneous amounts. That case is pending with a 2015 trial date expected.