Union members of the local 32BJ struck a historic tentative agreement last week for its more than 20,000 office cleaners, just narrowly avoiding a strike.

These are the people who take care of major commercial and public facilities around the city, including Grand Central Terminal, the Empire State Building, Rockefeller Center, New York University, all the city’s major museums and 1,300 office buildings.

The deal, struck with a committee of building landlords, will maintain health care benefits for cleaning crews, increase wages by more than $3 an hour by the end of the four-year contract and improve pensions by 10% — among a host of other things.

The agreement will now go to the members for a ratification vote.

Manny Pastreich, the president of the local 32BJ, joined NY1 political anchor Errol Louis on “Inside City Hall” Tuesday to talk more about how the deal came together.

“It’s always hard bargaining when you’re bargaining with the biggest real estate companies in the world, but this was especially bad,” Pastreich said. “We will concede that remote work, changes in the office market, really had an impact. So, in addition to the difficult bargaining we’ve always had, we’re facing a downturn in the real estate market that matched going back to 2009 or the late 1990s.”