Hi, I'm looking at buying a new house and the site value was estimated at 200,000 by the developer. As this is more than 1/4 of the house price then the stamp duty would be zero up to 125,000 and 7% thereafter. That was a couple of months ago but now the contracts have arrived we were told that the site is valued at 450,000. There are 4 houses in total in the development. Anybody see why the developer would increase the value to this? If I were to get an actual valuation on the site it would be closer to 200,000 than 450,000. 450,000 would be way over the normal price for a small site in this area.