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An official website of the United States government

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Official websites use .gov

A .gov website belongs to an official government organization in the United States.

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A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites..

Two-Four (2 – 4) Family Building

A residential building, including an apartment building, containing two to four residential spaces and in which commercial uses are limited to less than 25% of the building's total floor area.

Last updated March 5, 2020