Vestack raises over €10M to become a leader in low-carbon construction

Vestack, a tech company specializing in the design and construction of low-carbon buildings, announces raising over €10M with impact funds and historical investors. The PropTech is now looking to accelerate its growth, increase its production capacity, and finance research and development projects.

“A tech revolution is necessary to reconcile sustainable construction with affordable housing”, said Sylvain Bogeat, Nicolas Guinebretière, and Jean-Christophe Pierron, Vestack’s co-founders.

This latest round of more than €10M was led by the first Impact Private Equity fund of Mirova, an affiliate of Natixis Investment Managers dedicated to impact investing, supported by Ring Capital’s VC Impact fund Ring Mission, and Karista. It will allow the company to accelerate:

●     The development of new features in its digital design software,

●     R&D on the construction system and commercialization of new products,

●     Increase in production capacity, by financing new assembly sites and establishing new sub-contracting partnerships.

Karista via the Paris Region Venture Fund supported Vestack in a previous round in 2020, which enabled the business to develop its design and build solution and open a first assembly site East of Paris. The company has constructed its first projects and signed around 20 contracts in a booming market, supported by France’s new environmental regulations.

Vestack uses a digital design technology and a modular construction system to transform how our cities are built. The business allows its clients, real estate developers, to construct buildings with a three times lower carbon footprint, twice as fast, and without any extra cost compared to traditional construction. The Greentech constructs residential, accommodation, and tertiary buildings (e.g.offices, nurseries) of up to five floors. Incorporated in 2019, the company has around 40 employees across different sites in the Paris region.


The solution developed by Vestack relies on two innovations. On the one hand, the business has developed a software that facilitates the design of a building’s digital twin (i.e. a Building Information Model) which is then turned into production instructions. This design for manufacturing approach allows the specifics of modular construction to be anticipated from the first draft of the building design. On the other hand, the group assembles the modules off-site in the form of floor and wall panels made of bio-sourced materials.

The productivity gains from digitization, industrialization and robotization absorb any extra costs related to the use of more environmentally-friendly materials. Modular construction also aids the eco-conception of buildings by optimizing the use of resources and reducing supply chain flows, as proven by the solution’s many awards and certifications. Off-site construction also reduces the nuisances associated with a building site and cuts construction time by half.

Joanna Parent, Investment Director of Mirova’s Private Equity Impact, “The goal of Mirova’s environmental impact capital investment strategy is to accelerate the scaling of innovative environmental solutions with positive impact. A quarter of global greenhouse gas emissions and 75% of waste are linked to the construction sector.The issues Vestack is dealing with are vital to control our carbon emissions in the years to come and we are particularly happy to support it”.

Charlotte Lafont, Principal, Ring Mission, “Vestack's mission is to democratize low carbon construction. Their buildings, while respecting the environment, remain affordable and competitive. Beyond having an environmental impact, they have a social impact and provide an answer to the housing crisis. The solution fits perfectly with Ring Mission's aims. We are delighted to partner with Karista and Mirova to support Vestack in this ambition.”

Benjamin Zerbib, Investment Director, and Yvan-Michel Ehkirch, Managing Partner, Karista : “Since 2020, we've been proud to support Vestack with the Paris Region in its mission to become a leader in low-carbon construction. These new resources should increase production capacity and confirm Vestack’s position as a key player in the sector. We are delighted to welcome Mirova and Ring for this new phase.

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