An elderly man was found alive in his Washington, DC, apartment nearly a week after the building — which officials assumed was vacant — was ravaged by a fire.

Building inspectors who were combing through the wreckage of the Arthur Capper Senior Apartments on Monday were stunned to discover 74-year-old Raymond Holton.

“I wasn’t scared. I be here by myself anyway,” Holton told the Washington Post in a call from George Washington University Hospital, where he is recovering. “I didn’t know about no fire.”

Last Wednesday’s two-alarm blaze tore through much of the sprawling, four-story senior housing complex near the Navy Yard neighborhood. Authorities had conducted rescues and district officials announced that all building residents had been accounted for.

No one died in the fire, which displaced 100 people — save for Holton, who was stranded in a second-floor apartment.

“There was no way for him, in my opinion, to get out” without the help of the rescuers, Allyn Kilsheimer, the structural engineer who found Holton, said at a Monday news conference.

Authorities had been searching the upper floors, which were considered more dangerous, extensively, and done a “quick walk-through” in Holton’s area, which was not near the main part of the fire.

A crew from K.C.E. Structural Engineers was searching unit by unit when suddenly Holton heard them at his door — and called out.

The door was somehow swollen shut, so workers had to use a crowbar to open it.

“I’m not going anyplace,” Holton joked to them during the rescue.

Holton, who did not have any serious injuries, was carried out on a chair — though he’d insisted, in good spirits, that rescuers should let him walk out on his own, Kilsheimer said.

The day of the fire, he’d heard someone banging on his door and trying to get in — as authorities were in the building to get residents out.

But the old-timer said he had no idea who was at his door — and that it was stuck. His phone died and by Saturday night, the electricity was turned off.

Still, he never panicked. He had his medication and bottled water during the ordeal — but is “still hungry,” he added with a laugh.

Edgewood Management, which runs the housing facility, inaccurately told officials that Holton was on their tenant list and accounted for, Mayor Muriel Bowser said.

“We didn’t know he was in the building,” Bowser said.

A more extensive search was only conducted days after the fire because of safety conditions, officials said.

“The building was considered unstable and we weren’t missing anybody,” said Fire Chief Gregory Dean.

A representative for the building’s owners said the management company is looking into issues raised by the city.