Author List: Hopper, Tom, Massachusetts Housing Partnership; Jankovic, Matija, Massachusetts Housing Partnership; Marya, Ellen, Massachusetts Housing Partnership. | Expertise Level: Mid-Level Residensity (residensity.mhp.net) is an AGOL-based tool that measures & visualizes housing density for any location in MA to guide local planning for multifamily housing—using R, ArcGIS Pro, and AGOL, we leveraged public data to build this tool.