To me, that wuold be one of the the worst things about buying a brand new home. It stinks living in a dirt lot and it’s expensive as heck to make nice.
Ask for the world, I say – some HOA fees, a few important upgrades inside, cash refunds in the contract, closing costs, major landscaping, a new car, a plasma TV.
Just let them show a nice high publicly available sales price and I think you’ll have good luck. Good idea to give them this pitch mid-quarter, let them reject it, then come back towards the end of the quarter and say “how bout now?”