Smaller houses are relatively old. Nowadays the land is so expensive in CV, greedy builders tries to put as much house as possible on a given land. People who like spaces would rather buy a smaller old house vs a mini-mansion that you can shake hands with your neighbour on the second floor.
The other day I went to a new fill-in development Verona. It sits in the Pines neighbourhood where zero-lot houses are around 1800sf on over 5000sf lots and sells for 670K right now. The new houses in Verona sits on less land, around 4000sf and much bigger, around 2500sf and sells for over 900K. This is an extremely example even in Carmel Valley. No wonder nobody moved in yet. Do not believe the sold signs. Go over there at night and knock at your potential new neighbour’s door to find the real scoop.