“One of the things this building will allow us to do even better is to treat those memories with even more of the respect they deserve,” Morris Vogel, the museum's president, told The Observer.

The new building is a triple front tenement from 1888 that was “badly constructed,” according to Mr. Vogel. The museum purchased the building in 2007, and after spending about 18 months restoring it, the new space will open in the next few weeks. Last year, 173,000 people visited the Tenement Museum.

The expansion is characteristic of the Lower East Side’s art and museum scene, which is quickly increasing in size and scope.

“The museum’s program is about how immigrants came to use this neighborhood and how they transformed it,” Mr. Vogel said of the ever-changing neighborhood. “So the story we tell is the story of a neighborhood that was continually evolving—from early farmland, to construction of single family homes, to the building of tenements in the mid 19th century, it’s been one change after another. We tell the story of those changes. So it’s a neighborhood where we’re going to assume these changes are going to continue to happen. It reinforces the importance in what we do in our mission.”

The gallery currently has one location on the Upper East Side. It was founded in 2007. They represent 11 artists including Bill Rice and Anne Harvey and have works by Elaine de Kooning, Fairfield Porter and, of all people, Robert De Niro.

The gallery has yet to break this news on their web site. No word on an opening date.