The R-9 Multi-Family Residential Zoning District is intended for those areas with significant green space surrounding development, particularly higher density housing and non-residential uses. The R-9 District contains a mix of higher density, but predominantly mid-rise, housing types. Permitted housing types include single-family homes, both detached and semi-detached, rowhouse developments, and multi-family developments, all with significant front yard open space. Characteristic of this district are multi-family developments sited with significant front yard open space and rowhouse developments with open space both along the perimeter of the site and within the development. Ord. 16-581