The Big Apple building workers union narrowly avoided a threatened doorman strike on Tuesday by cutting a tentative deal with building management.

The union, 32BJ of the Service Employees International Union, which represents 32,000 residential building workers, was set to walk off the job on Wednesday — until coming to terms with the Realty Advisory Board.

“VICTORY!!!” the union said on its Twitter page.

“32BJ SEIU building workers & the [Realty Advisory Board] have reached a Tentative Agreement that achieves historic wins for the union’s membership in what will be the first post-pandemic contract between the two sides.”

The potential walkout would have been the first building worker’s strike since 1991.

The tentative agreement calls for 12.6 percent raises over the next four years, the highest pay bumps in union history, ABC-News reported.

The deal also calls for a $3,000 bonus for essential workers, protection for paid sick leave and vacation time, and ensures no premium share and maintenance of employer-paid healthcare, the outlet said.

The union represents more than just doormen and women. The organization also covers porters, superintendents, maintenance workers and concierges at residential buildings in Manhattan, Brooklyn, Queens and Staten Island.

A work stoppage would have affected more than 3,000 buildings and 555,000 apartments — including luxury units throughout the city.

Residents in some of those buildings had begun to bemoan the prospects that they would have to open their own doors, hail their own cabs, and take out their own trash if workers walked off the job.

The contract still has to be ratified by union members before becoming official.