In the heart of Vienna's vibrant 16th district, "Otto & Klaus" is a residential project that combines Viennese Altbau charm with modern living comfort. "Otto & Klaus" honors the legacy of the past while investing in the needs of the future. What was once built with craftsmanship pride is today undergoing a careful, future-oriented renewal.

A historic turn-of-the-century apartment house is being transformed into a sustainable home with modern technology, energy-efficient systems, and aesthetic sensibility — a project that breathes history and lives the future. The entire building will be comprehensively renovated, architecturally upgraded, and brought up to the latest technical standards.

In total, 19 condominiums between 29 m² and 124 m² offer space for diverse living needs — from compact city apartments to spacious family residences. Heat supply is provided by a central air-source heat pump, ensuring a comfortable indoor climate and especially energy-efficient heat generation with low operating costs. Underfloor heating, outdoor spaces such as balconies or terraces, and a modern passenger elevator round out the comfort.

The apartments combine stylish restraint with high-quality finishes. From elegant herringbone oak parquet to refined sanitary fixtures and carefully chosen tile patterns in the bathrooms — every detail was selected with quality and longevity in mind. The classical room heights bestow generosity on the living spaces while preserving the characterful charm of a traditional Viennese Altbau.

Ottakring — authentic, diverse, and full of character. Few locations combine urban dynamism so harmoniously with relaxed quality of life as Klausgasse 23. The Wilhelminenberg and Kongresspark are right nearby for walks and green recreation. At the same time, the area enjoys excellent infrastructure: shops, local suppliers, cafés, pharmacies, schools, and kindergartens are all within easy walking distance. The nearby Ottakringer Brewery and the lively Brunnenmarkt add culinary and urban flair. Public transport (U3 metro, tram lines 2, 10, 44, 46) rounds out the location.