Apartment over Commercial housing involves apartments located above commercial spaces in a mixed-use building. These buildings typically contain 25-100 units over 3-5 floors, with a net density of 26-84 units per acre. Careful design is needed to separate or integrate pedestrian access, parking, deliveries, and trash between the residential and commercial uses. High density allows for good access to neighborhood amenities, though active pedestrian areas and shared parks are also important for livability.