I assume you already have checked out this builder and some of his previous ventures? As to building in winter, it's done all the time and the Pacific Northwest is no stranger to the "building boom"! It rains alot there but they have nice houses too! The only time I don't like building in winter is when I have to foot the bill to pay for a heater while the builder is building my house! But it sounds like you are buying from a builder that is selling you a house in a development?

Thanks for the info. The builder has good rep and its previous houses all look decent. I just dont know if there is any risk to buy a house built in winter. Definitely it wont crush in warranty but I dont know about 5 years later.
Yes, I plan to buy a pre-sale house so I dont need to worry about bills. :)