How does this work with regard to more expensive homes?
If you come across a new development of large, expensive homes, you've gone a bit too far.
The most expensive homes, particularly those along the coast, have held up better than the rest of the market.
Various authors have suggested reasons for the building of expensive new homes.
Some of the world's most expensive homes go on the market here.
"It's typical to find an expensive home next to one which is much less," she said.
There is a California flavor to some of the more expensive homes as well.
But so far, the most expensive homes have cost around $4 million, she said.
"This means that any new construction is going to be a large, expensive home."
"Building has been concentrated in expensive homes, as you might expect."