Our research revolves around the dynamics of Accessory Dwelling Units (ADUs), AirBnB properties, and their interplay with the concept of the “Missing Middle” in housing. ADUs and AirBnBs, while both epitomize low-density housing options, cater to distinct needs within the urban housing spectrum. ADUs emerge as long-term rental solutions, seamlessly integrating into the fabric of residential neighborhoods and fostering a sense of community continuity. They offer a stabilizing force, potentially increasing the availability of affordable housing and diversifying the range of housing options beyond single-family homes, thus directly contributing to the “Missing Middle.” AirBnBs primarily serves the short-term rental market, providing flexible accommodations that cater to transient populations. While not traditionally aligned with the “Missing Middle” housing concept, the prevalence of AirBnB rentals can indirectly influence this segment by impacting rental prices and housing availability. In neighborhoods where short-term rentals are abundant, they may affect the character and density of the area, possibly leading to a scarcity of long-term housing options.

In essence, ADUs align more closely with the goals of expanding the “Missing Middle” by providing permanent homes to those seeking affordable options in well-established neighborhoods. Meanwhile, AirBnB properties represent an adaptive, albeit more transient, use of urban space, which must be carefully managed to maintain a balance with long-term residential needs.

Our study aims to dissect the spatial patterns that might emerge between potential ADUs locations and existing AirBnB properties in New York City’s Kings & Queens counties, and how these patterns can be harmonized to support and enhance the “Missing Middle” housing sector.