Excavation work at a Bedford-Stuyvesant townhouse seems to have undermined attached buildings on either side, causing parts of three buildings to collapse, and forcing people to evacuate the two that are occupied. Firefighters responded to 97 Quincy Street, one of four pre-Civil War townhouses between Classon and Franklin avenues, at 1:05 yesterday afternoon and found that a wall collapsed between it and the house under construction next door.

One person suffered minor injuries in the collapse, but refused medical attention, according to an FDNY spokesman. The two residents of 97 Quincy were forced to leave immediately.

"They can't go back into their homes," block resident Kris Wong said. "One of them is a screenwriter and all his stuff is just sitting in there on his desk, handwritten so he couldn't save to computer."

"He has been living there for 10 years," Wong added. "I'm going to try and help him find a place to rent but I doubt it would be anywhere near affordable as his place."

Building inspectors also demanded that work stop at the building on the other side of the excavation site, where owner Sinclair Smith was renovating in preparation for moving in. Smith has been working to retrofit the historic house with a sturdier frame since last fall and said he had nearly moved on to interior work when he got the harrowing phone call yesterday.

"We have, in preparation for development, rebuilt our shared wall," he said, adding, "We did not do our carpentry in anticipation of a collapse."

Building records indicate that the owners of 95 Quincy Street, a group of investors from the North Shore of Long Island, planned to add a floor to the 2 1/2-story townhouse and turn it into a four-family apartment building. Building inspectors slapped the owners with violations and $1,630 in fines back in July for beginning excavation without notifying the city, not being able to produce plans for the work, failing to monitor the adjoining structures for movement during the dig, and open holes and missing guardrails that endangered workers. Those fines have not yet been paid, according to the Buildings Department's database.

Smith said he told the owners last month he was nervous about how they were digging and they invited him to tour the excavation pit.

"They were cooperative—they showed us the pit, they showed us what they were doing—but they continued," he said.

Buildings Department reports show Sinclair's foundation was undermined by as much as six feet, and the house above the pit had its foundation collapse, one wall it shares with 97 Quincy undermined, and another deemed "defective." Sinclair is now waiting to hear from the city whether he has to tear his house down as a result. Numbers 95 and 97 will have to be demolished by hand, from above, and 99 has also been evacuated, he said, though he doesn't know how many people live there (there is not a vacate order at that address, according to online DOB records).

Wong reached out to Gothamist to shine a light on the allegedly shoddy construction, saying, "The whole neighborhood is upset."

"I just hope that this isn't a common occurrence," he added.

Whether it's "common" is debatable, but recent examples of similar snafus abound, particularly in Bedford-Stuyvesant, where real estate speculation has supposedly "topped out." In June, a townhouse collapsed on a block of Tompkins Avenue that is almost entirely a construction site. The following month, a four-story building bought with a neighboring one for $11 million collapsed on Fulton Street. And last month, a construction worker was killed and two were injured in a building collapse on Myrtle Avenue near Franklin.

The owners of 95 Quincy St. did not respond to calls and emails requesting comment, nor did their financier Bayport Funding or their contractor Sando Building Contractor. A Buildings Department spokesman was not immediately available.