No, the single-dwelling base zones will remain with established lot size requirements. In single-dwelling zones, the Additional Housing Options Overlay Zone (the ‘a’ overlay) provides an option for buildings (no larger than what would be allowed for a single house) to contain two units, or three units if located on a corner lot. As an alternative to duplexes or corner lot triplexes, the overlay would permit one Accessory Dwelling Unit (ADU) inside a house and one outside of the house, whereas a house is allowed one ADU today. Another way to think of these proposed changes is that they essentially allow one additional unit to what is already allowed under today’s rules, but within a smaller building “envelope.”
Two key differences between a single-dwelling zone within the RIP overlay and multi-dwelling zones are:
- Multiple units are allowed but not required, as they are in multi-dwelling zones.
- Multi-dwelling residential zones allow taller building heights and greater lot coverages, and they allow land to be consolidated into larger sites for multi-story apartments. Buildings in single-dwelling areas of the overlay will be limited to the same size as a house.