The affordable housing design guidelines have been prepared to complement the provisions of the Affordable Housing Zoning Overlay. They articulate the City’s goals with regard to the form and character desirable for affordable housing developed under the AHO. In several of the city’s zoning districts, the AHO allows buildings in which all residential units are made permanently affordable to be built at a scale larger and taller than other buildings allowed by the district’s base zoning. However, it is expected that affordable housing projects will be designed in a way that is compatible with their existing neighborhood contexts. The Affordable Housing Zoning Overlay is a city-wide effort and its zoning requirements apply to all land use districts: residential, office, business, and industrial.