Before it collapsed into a pile of rubble — killing at least eight and injuring 18 others — 1321 Flatbush Ave. was the building that several Brooklyn families called home.

The property, at the intersection of Bedford Avenue, stood three stories and housed five units, according to StreetEasy. Archival Google Maps images show ground-level commercial space, though its most recent use wasn’t immediately clear.

At least one of the homes inside, meanwhile, appears to have been renovated in recent years.

The listings portal only shows records for that one unit having been rented — a $3,550-per-month dwelling with three bedrooms and two bathrooms — in 2022. It spent one day on the market, according to StreetEasy.

Filled with sunlight and accented with exposed brick walls, the marketing images show an open kitchen with modern appliances, bathrooms dressed with subway tiles and a washer/dryer unit tucked inside a closet. It was all connected by wide-plank wood floors.

“Just became vacant and ready for new tenants,” reads the former listing, from Michael Levin and Artem Ermashov, of Yup Realty LLC.

Reached by phone, a Yup Realty representative denied that listing was from the building in question — telling The Post that previous rules allowed local landlords to list various addresses for available units. That claim could not immediately be verified.

Isolag Realty Corp owned the Flatbush Avenue building, according to city Department of Finance records. Isolag, which could not be reached for comment, purchased it from Femi Realty Corp. in October 2024 for an undisclosed sum. Femi also could not be reached for comment.