How old d’you have to be before a bungalow is acceptable?

So this is our house, taken a few weeks before we bought it. Looks a bit imposing from this photo as we’re on a bit of a hill and so the foundations at the front are actually head-height and the cellar entrance is only just below ground level. Still a bungalow though, as are most houses here, partly because during the snowy winter months any upstairs rooms would be too cold to live in, and also the big earthquake in 1986 brought most of them down anyway. Since then a few 2-storey houses have been built in the village, but they nearly all have the staircases on the outside. Our house is in fact quite unusual in that you can access all the rooms in the house without going outside.