History of the business Sangiorgio Silvano e Marco SA, Architects was founded in 1972 by Silvano Sangiorgio. When his son Marco joined in 1995, the legal form of the business became a public limited company. Architect Marco Sangiorgio then became co-owner and sole CEO. Architect Marco Sangiorgio , who graduated from the Swiss Federal Institute of Technology under the guidance of Prof Luigi Snozzi, has been a member of the SIA 1995 and of OTIA since 1998. In 1997, this practice was awarded the approval of the Swiss Canton of Ticino to act as a real estate trustee; approval was based on the qualifications of architect Marco Sangiorgio. Organisation and personnel The complementary specialist areas covered by the joint owners, Silvano and Marco Sangiorgio, allow this architects' practice to achieve outstanding performance with regard to design decisions, technical materials, construction and IT support. At the same time, their work is based on decades of experience involving a wide variety of successful projects, which is of fundamental importance in the construction sector . The practice examines the Client's requirements in detail at each stage of the design and construction; it backs up its contemporary ideas with the experience required to ensure a successful execution .

Bien GmbH is an architectural office based in Zizers, Switzerland , with a strong focus on multi-family housing and the careful renovation of existing buildings . The firm's work emphasizes the integration of architecture and context, combining functionality, clear design language, and long-lasting, sustainable solutions. Founded by architect Niculin Bisaz , Bien GmbH is deeply rooted in the Grisons region. The firm supports clients from concept development through planning, approval procedures, execution, and handover. Respectful use of materials, historical structures, and surroundings is central to the company’s philosophy. In the field of new construction , Bien GmbH specializes in compact, energy-efficient residential buildings , often enhanced with shared outdoor spaces such as gardens. Especially in village contexts, the office succeeds in creating harmonious ensembles through clarity and precise interventions. Each project meets high standards of comfort, design, and technology. The second pillar of the firm is the renovation of historic buildings . These are not simply restored, but transformed for contemporary use — with respect for materials, structure, and function. The results are spaces with character, depth, and long-term viability. Bien GmbH offers full services according to SIA standards : feasibility studies, preliminary designs, building permit applications, cost planning, tendering, technical planning, site supervision, and quality assurance. All projects are developed in close collaboration with local planners, engineers, and craftsmen. Projects are primarily located in the Grisons region — including Zizers, Chur, Landquart, Arosa, Davos, and the Engadine — but Bien GmbH also undertakes selected projects across German-speaking Switzerland. Clients include private homeowners, public bodies, real estate developers, and housing cooperatives. The promise is simple: to create architecture that is durable, responsible, and rooted in place.

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The architectural firm Angelo Vitali Sagl was established in 2001, operating in the field of architecture in both the private and public sectors, dealing with - Outline and executive planning; - Feasibility analysis, drafting of construction applications, preparation of executive plans and cost estimates; - Construction management and site accounting; - Work schedules, settlements and cost control. Given the good cooperation with clients in 2003, the firm extends its activities in the following areas: - Real estate appraisals; - Determination of commercial value, for private individuals, banking institutions; - Construction appraisals; - Energy calculations, verification of details; - Insurance appraisals; - Damage determination, liability assessment, for private individuals, insurance companies, public bodies; - General contractor; - Legal advice in construction matters. Since March 2008, the firm has moved its offices to Via Tratto di mezzo 29 in Gordola, further improving its logistics. Since 2009, the firm has been collaborating with various public bodies (municipalities, etc.), providing the necessary support such as technical office, analysis of the municipal property situation, investment evaluation. In order to remain at the cutting edge, computer systems are updated every year, and employees attend refresher courses. Our team is currently composed as follows Angelo Vitali STS/SAT Owner Cosetta Salvadè-Carina arch. dipl. SUP/SIA/OTIA Owner Monica Vitali Administration Fabrizio Bombelli arch. dipl. SUP/OTIA Design Architect Melissa Boverio Apprentice 3rd year SPAI Serenity Malvetta Trainee I year SPAI