Builders of Custom Home, Additions & Renovations. We design & build custom homes, additions, & renovation in southern New Hampshire, the North Shore of Massachusetts, and the southern coast of Maine. Many of our projects can be seem on our web site: www.greatroom.com. · Proven record Many of our homes & additions - renovations have been featured in magazines & on TV. The media has recognized our Design–Build Process as producing unique & dramatic living spaces. · Design Building without thoughtful design leads to wasted potential & resources. Creative design adds livability & equity without necessarily adding cost. Our web site has hundreds of examples of customer driven designs. · Structural expertise Our in-house framing crews have years of experience in framing & structure. While this is important in home building it is essential in renovations & additions. We are a team of professional who are highly qualified in structural framing.