Nell Thorn is under new ownership. Seattle restaurateur Ted Furst and his wife Cathy Conner, with two partners, filed papers for the restaurant and property sale Monday. The restaurant, closed since Monday for staff training, reopens Friday.

The deal’s details were worked out by now former owners Casey and Susan Schanen and the new owners in March, but assigning Department of Natural Resources leases for the state-owned aquatic lands beneath the building took the entire spring, delaying the sale’s completion, Furst said Sunday.

“It is a rare opportunity to build on a business like this” Furst...