City taxpayers shelled out a record $648,000 to house the homeless in hotels for just one night last year, according to an alarming new report obtained by The Post.

The staggering figure included a block of 10 rooms at a hotel near Times Square at a cost of $549 each, according to the city comptroller’s report.

Homeless people were put up for the night of Dec. 30 — when temperatures hit a high of 40 degrees and a low of 33.

“Hotel rooms are not only a Band-Aid solution to a complex problem, but they’re also very expensive,” Comptroller Scott Stringer notes in the audit.

“Homeless New Yorkers don’t belong in hotels,’’ he said. “This is a practice that has to end.”

Stringer’s office said that in just four recent months, the city’s overall homeless hotel tab spiked 32 percent, with the daily bill jumping from $400,000 on Oct. 31 — when temps dipped to 44 degrees — to $530,000 on Feb. 28, when the low temperature was 47.

The actual number of homeless people being placed in hotels during that time period increased by roughly the same amount, 33 percent, to 7,790 from 5,881.

The report, which Stringer plans to make public Monday, also revealed that the average daily cost for commercial hotel bookings for the city’s homeless skyrocketed a whopping 600 percent over 16 months — going from $82,214 per day in November 2015 to $576,203 in February 2017.

But while hotel rooms may sound lavish to some, they often lack such basic amenities as kitchens and easy access to social services, which are viewed as essential to helping homeless people.

Mayor de Blasio recently acknowledged the shortcomings himself, vowing in February that the city would be out of hotels and private apartment “cluster sites” completely within six years.

For the time being, the administration insisted it is moving to reduce hotel costs.

“The comptroller is behind the curve,” a de Blasio spokeswoman, Jaclyn Rothenberg, told The Post on Sunday. “We announced as part of our plan that we will be ending the use of hotels by opening a smaller number of better shelters across the five boroughs.”

The rep added that the days of $549-a-night hotels for the homeless are over and that “the average cost per night of a hotel is $175’’ now.

“We recently put into place a plan to further reduce costs and improve services,” Rothenberg said.

Stringer — who was considering a mayoral run this year but has since ruled it out — has consistently criticized fellow Democrat de Blasio for his handling of the sheltered homeless population, which has hovered at a record high of about 60,000 for months.

He has argued the city should transform 1,100 city-owned vacant lots into 50,000 units of affordable housing.