If I can be of any assistance, please call on me. http://www.karenmordus.com
You can make an offer, but it's going to be more of a negotiation. Some things you can negotitate, e.g., if you are a 1st time homebuyer and the home will be built after the tax credit runs out, ask the builder to reimburse you that amount, what extras will they include, etc. etc. New home builders are very willing to work with buyers and negotiate the price since they know you can always go somewhere else.
If I can help with your purchase, please give me a call.