Tolerant thinking, coupled with an unconditional desire to expand its own horizons, have always been guiding principles for sieger design. Company founder, architect and general contractor Dieter Sieger, designed and built customised detached homes, entire settlements and exclusive villas, not to mention furnishing several sailing and motor yachts, before embarking on a third career and becoming one of the world’s most innovative and successful bathroom designers. When his sons Christian and Michael Sieger joined the family business, the range offered by their design company was extended once again: marketing, communication design, design management and public relations complemented industrial design, architecture and trade fair stand construction. In 2005, the brothers launched their own premium brand, SIEGER.


A timeless icon, the TARA fitting, turns 30. Subtle refinements to the design, new finishes and alternative handles have kept the classic constantly up to date.


With its iconographic C spout, the CYO fitting extends Dornbracht’s design range in 2021 with a new sculptural quality.


For Trilux, sieger design developed the premium lighting solutions ArimoFit and Creavo LED. These flexible, modular systems are intended for use in public and commercial spaces.


For Duravit, the complete bathroom series Viu/XViu is being developed with a distinctive, multifaceted design aesthetic. From a technical perspective, too, it breaks new ground. Furthermore, for the 20th anniversary of the bath series Happy D., a new edition is presented.


Bestseller with an eclectic look – over 20 years after the modern classic TRIC first stunned the world with its innovative designs, sieger design creates the new decor Vivid Bloom for the multifunctional dinner service from Arzberg.


One of the most successful design projects is being given a contemporary update. For the brand’s 25th anniversary, sieger design has conceptualised the Ritzenhoff relaunch – with the “The Next 25 Years“ collection.


Small Size Premium Spa, SSPS® for short, is being presented for the first time on occasion of ISH. The architectural concept integrates a variety of functions into an area of just 6.2 sqm, allowing it to meet the increased expectations resulting from social trends like urbanisation. More information: www.small-size-premium-spa.com


Eleven years after the launch of the successful MEM series, it now features a refined form and outstanding shine – with the new Cyprum finish.


sieger design and its trendsetting products have been a feature of ISH for 30 years now. Here, Duravit, Dornbracht and Alape present their news.


Launch of the LAMY scala writing instruments and presentation of the archetypical fitting SELV from Dornbracht.


The new Dornbracht fitting Deque and the Duravit program Darling New are presented at the fair ISH. Michael Sieger develops the visual concept for the Wiesmann Roadster MF3 final edition by SIEGER.


Ambiance Tuning Technique (ATT), a system/shower concept with digital control system which has been developed for Dornbracht, is showcased.


In cooperation with the fashion agency Allenbach the SIEGER showroom is opened in Zurich. The SIEGER by Theresienthal collections serve to broaden the range of the premium brand with their high-quality fine glassware.


The interior of Münster’s “Am Aasee” restaurant receives a makeover.


sieger design produces a concept for redesigning Shanghai’s Nanjing Road.


The Polaron lighting system is developed for Trilux.


SIEGER – the brothers use this name to showcase their own brand: fine-quality porcelain in cooperation with the porcelain manufacturer FÜRSTENBERG, a ties selection and not to mention a small innovative furniture range and a collection of art postcards.


Planning and developing of the "Private Heaven – from bathroom to living space" architectural study.


Generational shift – the company’s founder, Dieter Sieger, steps down from the senior management team. sieger design GbR and sieger design Consulting GmbH are merged into sieger design GmbH & Co. KG, with Christian and Michael Sieger at the helm as managing directors.


The establishment and expansion of the brand management division, launched in 1992, begins to bear fruit: a multitude of exhibitions follow and design prizes are awarded for the brand identities for Blome, Ritzenhoff, Duravit and Dornbracht.


A Point of sale system developed for WestLotto.


A collection of wood-burning stoves is designed for Skantherm.


Following on from a coffee machine used in catering, the Materia cutlery collection is developed for WMF.


The hit TRIC porcelain dinner service is designed for Arzberg – and is still one of the best-selling mid-range collections.


Beyond the sanitary products, tableware becomes a central focus. The CULT range is designed for Arzberg and further developments continue to ensue in the sanitaryware sector, especially as regards Dornbracht and Duravit.


Dornbracht launches the fitting Tara, designed by sieger design. Work starts on the development of numerous glassware collections, including the successful Milk range for Ritzenhoff.


sieger design Consulting GmbH established to provide clients with PR and marketing consultancy. The company is gradually taken over by Christian and Michael Sieger and grows into a holistic service provider. The first contracts are concluded in the areas of brand management and corporate culture.


Lamp designs for GKS and Peill & Putzler. For the first time, product photography becomes part of the range of services.


sieger design headquarters relocates to Harkotten Castle. Extensive restoration work ensues ahead of the move.


Design, planning and interior construction of now more than thirty luxury yachts and further villa projects. Numerous awards and prizes received for the development of the Domani fitting for Dornbracht. The company grows to a total of ten employees.


First awards and prizes received for the Lavarlo and Lavarset sanitaryware ranges by Alape. Dieter Sieger discovers that the bathroom, hitherto overlooked, is a highly promising sector for innovative ideas and products.


First dealings with the sanitation industry; sanitaryware developed for Goslar-based enamel manufacturer, Alape.


Design and expansion of a 42-foot-long sailing yacht for the renowned Anne Meyer dockyard in the Dutch municipality of ’s-Hertogenbosch. This is followed by further contracts for large sailing and motor yachts on behalf of international clients.


Planning and construction of large-scale villa projects, both in the Münsterland region and internationally.


A firm of property developers is founded to oversee the development, planning, turnkey construction and marketing of entire residential areas in the Münsterland region. Garden court buildings come into being.


Dieter Sieger establishes an architecture firm and fashions his own home into a prototype for transparent and functional residential architecture. He wins awards for his designs for family terraced houses.