The core activity of Isenring Hauswartungen encompasses the provision of services in the areas of property management, cleaning, gardening, and winter maintenance for real estate properties. Specifically, this includes: cleaning of objects, including maintenance cleaning, window cleaning, garage cleaning, moving cleaning, and construction cleaning; gardening services, including lawn maintenance, hedge trimming, leaf removal, garden maintenance and irrigation, weed removal, and replanting; winter services, including snow removal, salting, and gritting; technical maintenance, including monitoring and control of technical systems such as heating systems, air conditioning systems, and ventilation systems, water treatment plants, as well as repairs as needed; and property management services, including painting, repairs of all kinds, and caretaker services.