Josef Küpper Söhne GmbH is a family-run building services company based in Bonn, serving private and business customers across the Bonn/Rhein-Sieg region. With more than 100 years of experience, the company combines personal advice and dependable workmanship with modern technology and sustainable solutions. Its services cover heating, bathrooms and energy consulting, with customer service and maintenance available to support projects over time.

For heating projects, Küpper assesses household needs, estimates costs and installs suitable systems, while also providing servicing, customer support and advice on funding. The company’s bathroom specialists handle renovations and new bathrooms from planning to completion, offering a single point of contact, tailored proposals and optional 3D design. Projects can include accessible features, easy-clean surfaces and comfort upgrades such as shower toilets. Customers can also visit bathroom studios in Bonn-Bad Godesberg, Bonn-Beuel and Meckenheim.

Küpper’s energy advisers assess elements such as heating, insulation, windows and roofing, then develop renovation plans with cost and funding overviews.