A recent spate of 99-unit buildings does not sit well with affordable housing developers.

A group of affordable housing executives slammed the new state tax break that has given rise to this recent trend at a legal panel hosted by the New York City Bar Association. The developers gathered at the bar association’s Midtown headquarters Tuesday to discuss challenges in their sector — regulatory hurdles key among them.

New York City has seen a surge in developers proposing buildings with exactly 99 units due to the new tax program known as 485-x, a replacement for a popular policy called 421-a, which requires a $40 hourly construction worker wage for buildings with 100 or more apartments.

“It's decimating affordable housing where it's probably most needed,” said John Valladares, an executiv

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