Check out Flanders & Co in Meredith.
http://www.flandersandco.com/
They have built three houses for me (ranging from a $150k budget to a $1mil budget) and I have been very happy with all of them. The owner Mark Flanders is also a home designer and has desgined all of the houses. Although I have worked with architects in the past I found it was a lot easier for me to work directly with the builder/designer. Nothing against architects - they design beautiful homes - but I find that when the designer knows what it takes to build the house they can be better about sticking to a budget. Not to be too simplistic but if roof rafters come in standard sizes of 22 and 24 feet you don't design a room to be 23 feet wide and custom order the rafters.
Don't hesitate to PM me if you want. 3 houses built in the area in 6 years means I have made every possible mistake you can me!!