The de Blasio administration is trying to pull a switcheroo on public housing tenants — floating a proposal to build a high-rise tower with market-rate apartments on a Hell’s Kitchen lot that was supposed to be reserved for affordable housing, elected officials said.

A deal hatched during the Bloomberg administration set aside a NYCHA parking lot at Harborview Terrace on West 55th Street for 226 affordable units in a 16-story building.

But the administration told elected officials Monday that it’s currently looking at four alternatives, including a mixed-unit tower with 753 units — 527 at market rate and 226 affordable.

The other three proposals would each lower the number of affordable units below 200, according to sources.

“After working together with the community for years to strike a deal for a 100 percent affordable development at Harborview, it was like a gut punch to learn that the city was considering a new deal with far fewer affordable housing units or a mega-tower of market-rate units at the site instead,” said Assembly member Linda Rosenthal, who attended the meeting.

“We are all infuriated that the administration would come up with such radically altered plans that run counter to the original mission and after so much work, without any input from the community or the elected officials who represent them.”

Manhattan Borough President Gale Brewer said she was a City Council member when the Bloomberg administration guaranteed the affordable housing units as a way to gain approval for the nearby Hudson Yards development project in 2005.

“That was what I was promised — and so was the community,” she said of the affordable housing. “This is all to compensate for Hudson Yards. Period.”

The city’s proposals resemble other housing deals the de Blasio administration has been trying to strike on NYCHA land to generate money for the cash-strapped authority.

A recent analysis found that NYCHA’s capital project needs top $32 billion.

NYCHA officials would not confirm details of the proposals.

“The administration hasn’t made a decision on which approach to adopt,” said agency spokeswoman Robin Levine.