The 1960's saw the founding of the SOCIÉTÉ PRIVÉE DE GÉRANCE (6 August 1960) and the development of its activities in the region of Geneva and Lake Geneva.

Throughout the 1970's business, and staff numbers, progressed gradually notably thanks to modern management methods, a strong local presence, managed diversification and the acquisition of property management companies. A strong emphasis was also placed on communication and marketing to prioritise the sale and lease of client assets during a difficult financial period (the oil crisis).

During the 1980's the SOCIÉTÉ PRIVÉE DE GÉRANCE consolidated its position in French-speaking Switzerland and the surrounding area by joining forces with Nyon-based RYTZ & Cie SA and by creating French subsidiary Agence IFA, which is active in the Haute-Savoie and the region of Gex.

In the 1990's the SOCIÉTÉ PRIVÉE DE GÉRANCE enjoyed a period of strong growth, becoming the sector benchmark in French speaking Switzerland for property promotion and management. It expanded its activities in all areas of the property sector (« An accumulation of expertise »). The company was the first property manager to have its own website (www.spg.ch) and to offer clients an optimum approach to their portfolio thanks to an electronic document management system (DMS). A pioneer in the field, the SOCIÉTÉ PRIVÉE DE GÉRANCE also developed the innovative concept of a multi-purpose unique manager ("a single contact person"). Operating as a central contact person, they make life easier for owners and tenants by avoiding the too partial interventions and visions that become fragmented in property management ("Staff who are available and who listen to the client").

For the SOCIÉTÉ PRIVÉE DE GÉRANCE, the dawn of the 21st century was synonymous with the expansion of its international networks. Partnerships with world leaders in commercial property and the luxury residential sector (Cushman & Wakefield / Christie's International Real Estate), enabled it to provide a global property consultancy service ("A global property consultancy") designed for both Swiss and international clients, companies and individuals. The company is now known as the SPG Group ("A skills network"). SPG Intercity is formed by SPG in French-speaking Switzerland and Intercity in German-speaking Switzerland. An independent specialist in commercial property consultancy, its activities cover the length and breadth of Switzerland.

In the last decade the SOCIÉTÉ PRIVÉE DE GÉRANCE has also stepped up its activities in the areas of training ("A learning company") and sustainable development, in particular by reducing the energy dependency of its managed properties ("Your sustainable property asset manager").