The question to ask yourself is where did the problem lie. There are typically four reasons why a house didn't sell.
Communication, Price, Condition and Marketing.
The first three can be the fault of the agent or yourself or a combination of both. If you want to get your house sold you need to objectively sit back and see where the problem lies. Just about every home is saleable in 45-90 days. Period.
Below is a link to a series of articles about re-listing your home.
Ill leave you with one thought...
Doing the same thing will obtain the same results!
If you want to sell your house something needs to change.... more
If your not comfortable with your Realtor you should change. If they are representing you and they are your buyer agent they work for you and should advise you. You have the right to do a home inspection even on new construction. Anybody can make a mistake, I have seen new homes that the homes inspector found a few electrical issue that shouldn't have happened. But they did and the home inspector caught them. New doesn't mean perfect, If it doesn't seem right it probably isn't. Make sure your Realtor keep you informed of your rights, other wise you have the wrong Realtor. Good Luck!... more