Final Phase of Howell Oaks! Full Exposure lot on corner of Madison Street and Oakmont Trail with tree line to the west. Beautiful setting to build your forever home. Howell Oaks is nestled around the jewel of the Waukesha County Parks system, the Retzer Nature Center. Nearly 75 acres is estimated to be permanently preserved in its natural unspoiled environment which will augment the Waukesha County park system.