In mid-July at the construction site at 1 Java Street in Brooklyn, New York, the outside temperatures can reach sweltering highs in the 90s. But 500-feet underground, it’s 55 degrees all year round.

A new four-story, seven-unit building is being developed at the site of a former two-family residence in Greenpoint, BuzzBuzzHome reported. The new building, located at 69 Java Street between West and ...