Which city enacted special requirements in the late 19th century to regulate tenement housing for immigrants?

New York City is known for enacting special requirements to regulate tenement housing for immigrants in the late 19th century. This was a critical response to the rapid influx of immigrants during that period, leading to overcrowded and unsanitary living conditions in tenement buildings. The New York State Tenement House Law of 1901 was particularly significant, aiming to improve living standards by requiring better ventilation, light, and sanitary facilities in tenement housing. This law represented a major shift toward recognizing the need for governmental oversight to protect public health and welfare in densely populated urban areas.

In contrast, while cities like Chicago, San Francisco, and Boston faced their own issues with housing and immigration, New York's legislative actions specifically addressed the dire conditions within tenements that were a result of its unique demographic changes during that era.