In a statement late Monday night, Mr. Cuomo said “there will be no short-term emergency” caused by the expiration.

“While the Legislature needs to act immediately,” he said, “New York tenants should know that this state government will have zero tolerance for landlords that seek to exploit those who live in rent regulated units.”

The atmosphere in the Capitol has been tense in recent days, as politicians blamed each other for the lack of action. On Monday, lawmakers and aides shuttled between meetings hoping to reach deals on some of the more substantial subjects. While no one emerged from these discussions with a deal, the parties seemed to be moving toward agreement on some issues late Monday, according to one person involved in the talks who was unwilling to speak on the record because of the sensitive nature of the discussions.

Adding to the political consternation was that Mr. Cuomo, a Democrat, has sought to link the passage of rent legislation with the approval of the education tax credit. But the Assembly, controlled by Democrats, has steadfastly opposed the tax credit, and has insisted that rent regulations be considered separately.

A prime example of Albany’s intransigence was the maneuvering around rent regulations. The Assembly passed an extension bill that would give lawmakers two more days to reach an agreement.