Ranking: Top 5 construction companies in Île-de-France

The Île-de-France region, which accounts for most of the country’s economic and urban activity, is home to leading construction companies. These companies, which play a key role in regional development, operate in a variety of sectors, including infrastructure, civil engineering, residential and commercial construction, and public works. Their expertise is a key factor in transforming the urban landscape of the Île-de-France region in response to growing needs in terms of mobility, housing and public facilities. Through large-scale projects, these companies play a strategic role in the modernisation and sustainability of the region.

Colas, one of the most successful companies in the Île-de-France region, stands out for its undisputed leadership in the construction and maintenance of transport infrastructure worldwide. Its expertise is unanimously recognised in sectors as diverse as road and motorway construction, airport runway construction, urban development and civil engineering. In 2024, the company generated revenue of €15.9 billion, the vast majority of which came from its core road construction business. Colas, which operates in more than 50 countries, employs approximately 64,000 people and manages nearly 50,000 projects of varying sizes each year. Among its recent achievements is the new coastal road on Reunion Island, a major project with an estimated cost of around €850 million.

List of the 5 largest construction companies in Île-de-France

Here is a list of the most important construction companies in Île-de-France: