Madison and Milwauikee home builder Tim O'Brien Homes focuses on delivering extraordinary building experiences. Founded in 2007, Tim O'Brien Homes is committed to energy efficiency, innovative designs, green building practices and renewable technologies. We offer home and lot packages in the Milwaukee and Madison, Wisconsin areas featuring a 5-Year Energy Savings Guarantee, 10-Year Limited Warranty and green saving benefits that ensure value, longevity, and comfort in our homes.