By the 19th century, New York City had become a bustling metropolis, and its housing reflected this growth. Tenement buildings, which were large, multi-family dwellings, became common. These buildings were often overcrowded and unsanitary, but they provided affordable housing for the city's growing immigrant population.
In the early 20th century, the city began to build public housing projects, which provided safe and affordable housing for low-income families. Today, New York City's housing market is diverse, with a mix of private homes, apartments, and public housing.