Over 65 years, Doc’s All American has become a popular spot for burgers and ice cream in Delray Beach. But now the future looks uncertain.

The building at 10 N. Swinton Ave. has been listed for sale, said Cecelia Boone, a real estate agent representing the property’s owner, Cecilia Egan.

Egan would like to see a mixed-use project such as condos and retail take shape at the location, Boone said.

It’s not clear what that means for Doc’s.

A man who identified himself over the phone as Doc’s owner said rumors have flown for 2 1/2 years about the possible sale of the property. It’s not true, he said, declining to give his name or to comment further.

State records list Silver Cup Inc. as Doc’s owner.

Boone, with Southdale Properties in Lake Worth, has the property listed on the online commercial real estate marketplace LoopNet.com. The listing says the Dunkin’ Donuts building next door at 37 W. Atlantic Ave. and a parking lot in between also are for sale. In all, it’s about .77 acres, Boone said.

She said she could disclose the price.

“They don’t have to be out at this time,” Boone said of Doc’s. “The property has just come back on the market.”

She said the property had been for sale before but the transaction fell through.

Boone says she’s been a fan of Doc’s ever since she moved to the area 18 years ago. The landmark restaurant, opened in 1951, lures in families hungry for fries, burgers and foot-long hot dogs. It’s an institution that’s become a popular stop for generations, she said.

An unofficial Facebook page for the restaurant has posts from customers raving about its food and saying that Doc’s is where they go to celebrate accomplishments. Comments from July, August and December of last year also question whether the restaurant is closing.

“All of us love Doc’s,” Boone said. “But sometimes it’s time for a change.”

mvalverde@tribune.com