Jeff Fenske has been in the construction industry for more than 37 years and has been constructing quality custom homes throughout the Madison area and greater Dane County and Sauk County areas during those years. When you build with Fenske Homes LLC, you are truly building with Jeff Fenske. Jeff is a general contractor who participates in the day to day process to assure that each component of every home/project meets his and your high level of quality. ASSOCIATION Madison Area Builders Association, WI Builders Association and National.