Location, proximity to transport, size, adaptability and level of equipment are basic criteria in the valuation of an office building. But new problems have arisen. Changes in the design of workspaces and modes of collaboration must change experts' approach to the valuation.

The flexibility and mixity of spaces, their attractiveness, their potential for well-being or the presence of collaborative spaces are, for example, increasingly significant data points. These criteria have real economic value. Indeed, their impact on employee efficiency is proven, and they play a key role in the image of the company occupying the premises. It is therefore essential to take this into account when carrying out a real estate valuation.

Occupier demand remains strong, particularly in the new economy sectors. In some regions, the market is in a situation of undersupply. This is the case in certain sectors of Île-de-France, the leading office market in continental Europe. Offices are regarded as a "king" product by investors for whom they are the preferred asset type. With 4.2 billion euros of quarterly investments on average over the last 5 years in commercial real estate, the office asset drives the real estate market. Primary investors are funds, with nearly 50% of investments, followed by real estate, SCPIs and insurers/mutualists. Foreign investors are increasingly present in France.

Investors' interest in office space is based on traditional financial criteria for real estate assets: rents, deductibles, rental arrangements, rates of return and the amount of charges or projected work budgets. These elements are closely linked to criteria such as location, legal status, services or surface area of the premises.

But beyond these elements, investors attach particular importance to the green value of offices and the introduction of energy labels, given their impact on the level of charges and rents on a property.