Fond du Lac’s housing stock is old by Wisconsin standards, with more than 28 percent of homes built before 1940. Houses that old are often rewired in pieces over the decades, which can leave a mix of old and new circuits behind the walls. Mr. Holland’s licensed electricians help Fond du Lac homeowners, landlords, and businesses with electrical repair, panel upgrades, rewiring, GFCI outlets, lighting, EV chargers, Generac standby generators, and 24/7 emergency service. Call (262) 223-3786.