Building an estate of bungalows costs no more than one of houses, but you may find that the gardens are smaller. That is no problem for the elderly, who are not likely to want to manage a bigger garden. In this village we are aiming to build all bungalows near the village shops and post office, to minimise the inconvenience to old people. But it's a high value area; a typical house or bungalow fetches £600,000 +. Since we are aiming for downsizing, this price will not affect buyers. And that is true of all areas; the local price is the local price, whatever it is. Nobody is building ghettoes for the old, many miles from anyone else.