If you have been working with a buyers agent all along, he or she would have a pretty good idea of the market value of the homes that you like. Generally it is a range of values. Example: 4000 sq foot new or newer home might be worth between $480K and $580K depending on location, interior and exterior upgrades etc. The question to address then is this home at $549K one of the nicest, best located, best equipped homes? Or is it prettty basic without much in the way of upgrades and incentives. - If it is a 4000 square foot home at $549K it should be nice. Although there are 4000 square foot homes in Elk Grove for less than $480K they are often short sales or repos in poor or barely fair condition.
Price aside, be sure to do research into the builders reputation and do your best to find out if the developer is paying its sub-contractors before you do anything. Perhaps you heard on the news a few months back that new homeowners were stuck with liens after purchasing and closing escrow on new construction homes. The builder did not finish paying its sub-contractors, and the new owners got stuck with the bill despite having title insurance. Turns out the type of title insurance they obtained did not protect them against this. If you are working with an agent, he/she can advise you in this regard. Good luck to you.
I hope this helps. If you give me more info I could hopefully be of more assistance.
James Blaylock, REALTOR
Keller Williams Realty