I think one of the reasons you see some of them separate from the community is that to build a newer development you need land. Preferably land that is cheap. When we drive to visit one of our kids we pass on the highway a good number of signs for new housing developments. Some advertising as 55 plus others single family or townhomes or some communities with a mix of types of dwellings. What they all have in common is the need for a vehicle. At least in most areas there isn’t room within the downtown corridors for larger scale new housing.