A 55-year-old building superintendent was found dead and wrapped in garbage bags under a bed in a Queens apartment Tuesday — after he allegedly went into the building to collect rent from tenants, reports and sources said.

The victim was the superintendent of the building on 70th Avenue in Kew Gardens and was known as a friendly man who would offer a helping hand, residents told The Post. 

“I’m shocked. The block is shocked. Everyone is shocked. The whole block knows him. The whole complex,” a neighbor said.

Surveillance footage shows the superintendent entering the apartment of a couple in the building — and never emerging, according to police sources.

That couple reportedly has a bad reputation in the apartment complex.

“They weren’t the nicest neighbors to have next to us,” a neighbor told The Post Wednesday. “The man was drinking a lot. The woman was sweet but they fought a lot.”

An upstairs neighbor said the couple would constantly fight.

“They drank and fought but we live upstairs so it wasn’t much of a problem for us,” the neighbor said.

Another neighbor said the superintendent actually secured the apartment for the couple a few years ago and that he knew them personally.

The superintendent’s manager had sent him to go collect back rent from the couple, according to an ABC7 report.

That manager then called for a welfare check on the superintendent and the cops made their gruesome discovery.

The body was discovered at the Kew Gardens Hills apartment building at 137-17 70th Avenue around 5 p.m., police and sources said.

The superintendent was unconscious and unresponsive underneath the bed and declared dead at the scene by EMS.

The city’s medical examiner’s office will determine his cause of death before authorities can determine if foul play is involved, according to the NYPD.

The NYPD has two people in custody but they have yet to be charged, according to police sources.

The man’s identity was not released pending family notification.