The City of Portland initiated the Residential Infill Project (RIP) to enable the development of Accessory Dwelling Units (ADUs) and Air B-and-B type units on properties zoned “exclusively” for single-family homes. The logic was that this zoning was intentionally discriminatory. Although it does prevent the development of duplexes and other multi-unit buildings, it is arguable that it was specifically to discriminate against residents without the means to own or rent a single-family home on a single lot.
Previous editions of the Eliot News have discussed Portland’s new, and novel, Residential Infill Project (RIP). On paper, it changes the zoning code to allow “higher” density development on what we normally consider single-family lots and associated neighborhoods. The objective is to address the “missing middle” of housing options between single-family homes and large apartment blocks by mixing other multi-family dwelling types amongst single-family homes. Two of the obvious examples of this are Accessory Dwelling Units (ADUs) and “flag” lots, both of which incorporate new dwelling units on a single lot.