Architekturbüro Ratschko is an architecture firm based in Hamburg, Germany, specializing in high-rise construction and interior architecture. Founded in 2011, the firm focuses on new builds, renovations, extensions, and attic conversions, with a particular emphasis on "Bauen im Bestand"—construction within existing structures. This approach treats adaptation of historic or existing buildings as a core philosophy rather than a trend, prioritizing detailed analysis from initial concepts through execution.
The firm's activities span project development, needs assessment, design planning, execution planning, site supervision, and project management. Key project types include single- and two-family homes, hotels, restaurants, and commercial spaces. Notable completed works encompass the British American Tobacco headquarters (2008 and 2024 updates), Meininger Hotels in Hamburg, Bremen, Heidelberg, and Budapest, NH Hotel Köln (Altstadt), the International School of Hamburg Aula, and the AUDI Pavilion in Shanghai. These projects demonstrate expertise in hospitality (6 projects), commercial buildings (4), special structures (6), and residential conversions (6 total residential).
While the firm serves private clients and businesses, tailoring designs to individual lifestyles or corporate identities, its portfolio shows limited direct engagement with affordable housing. Sustainability connections appear implicitly through renovation work, which preserves existing structures and reduces new construction demands, though no explicit affordable or cooperative housing initiatives are documented. With 5-9 employees, operations remain Hamburg-centered but extend to national (Germany) and select international sites.