If you signed a warranty with your contractor, any problems will be taken care of by them without any additional charges.
What is even better is that you live in a dwelling according to your specifications. If you don't like it or you want to add something, you can make changes and no one will oppose your decision.
Since your house is new, it is more energy efficient compared to older homes thanks to new technology and you are compliant with new environmental regulations.
A decline in home building has not stopped other people from having their own house constructed. In fact, most people you ask will probable tell you that they prefer to live in their own home rather than paying rent. With that, you have a land title under your own name and no one can take that away from you unless you decide to sell and move somewhere else.
This will enable you to establish good credit with the bank when you need to apply for a loan. That may not happen right now because of the financial crisis but when it is over, you will soon realize that this was very handy.
You will also get tax cuts which will never happen if you are renting. You will be happy about this when it is time once again to pay your income tax for both federal and state since these are usually fully deductible.
There is no better time to own a home or face its challenges than during a decline in home building because both labor and materials are cheap. If you have the money to pay for it, you shouldn't have a problem paying for taxes and mortgage.