How many new houses are built each year?

About 1.5m per year, however, this has declined due the economy.

In 2005 1.6 million housing units where built. This includes single and multifamily units. In 2010 around 330,000 housing units where built. That is a decline of more than 300%. This is why it will take years before the housing market will be back to contribute to economical growth.