Tim O'Brien Homes - Madison Real Estate Services Visit Website Request Info 408 Limerick Drive Cottage Grove , WI 53527 (608) 347-6837 About Map About Building Quality, Value-Driven, Energy Efficient Green Homes. At Tim O’Brien Homes, we truly are a family. And when you choose to build with us, you’ll be welcomed into our family with open arms. What's Nearby? Distance: 5 10 15 20 25 50 mi.