A coalition backed by the Real Estate Board of New York on Tuesday launched a last-minute advertising campaign for its preferred version of the 421a tax abatement extension.

The 30-second ad touts the push to expand affordable housing units under one version of the abatement’s re-approval, a push that’s supported by New York City Mayor Bill de Blasio and ostensibly opposed by Gov. Andrew Cuomo, who has spoken favorable of the union-led push for a prevailing wage.

“Everyone knows we need more affordable housing in New York City,” the ad’s narrator says. “But unless we reform state housing laws, we’ll never be able to build it. So tell Albany to stop ignoring the housing crisis, and pass a new 421-A plan – to finally build more apartments New Yorkers can afford.”

The extension of the tax abatement is one of several key issues that are due to expire this month, along with rent control regulations for New York City and mayoral control of New York City schools.

The debate over the abatement re-opened a rift between Cuomo and de Blasio, who have been at odds over how to extend the measure.

“If we ignore the housing crisis, we are ignoring every rent-burdened New Yorker, every working family stuck waiting on a housing lottery, and every homeless person hoping for safe, quality housing,” said New York State Association for Affordable Housing (NYSAFAH) President Jolie Milstein. “An improved 421-a program will maximize the creation of new affordable housing and allow us to take greater strides toward solving the housing crisis. The only option for Albany is to pass a new 421-a before it’s too late for the New Yorkers who need it most.”