What does your Realtor say??? Hopefully you're working with one. No one on here can advise you on what to offer. It depends on the property (which we haven't seen), and what similar properties have sold for in that area recently. Your best bet is to work with a Realtor as a Buyer's Agent. The builder wants to sell it for the highest amount possible. Your Realtor can help with the negotiations, not just purchase price, but seller paid closing costs, inclusions, etc.