Welcome to Elert Realty For All Your Real Estate & Construction Needs 517 W. North St., Suite 101 Deforest, WI 53532 With over 25 years experience in home building and construction, Elert Realty offers affordable housing with fine details. We ll strive to meet your housing needs with quality, stick built homes at an affordable price. Visit our latest community on Madison s east side, Parkway ...