Over the last several years, the Citizens Housing & Planning Council (CHPC) has been researching and analyzing how and where New York City’s residents live, and what housing is available to them. Their findings have revealed the many ways in which current housing regulations and standards constrain the range of choices the market can offer, particularly for single-person households, shared dwellings, and multi-generational households, through restrictions on unit size, subdivisions of existing units, and definitions of who may jointly occupy units.