About This Fund
Launched in 2023, ISAI Build Venture is an €80 million venture capital fund created through a strategic partnership between ISAI, one of France's leading entrepreneurial venture capital firms, and Bouygues, the diversified French industrial group with operations spanning construction, real estate development, transport infrastructure, and energy services. The fund represents Bouygues' commitment to accelerating the digitization and decarbonization of the built environment by co-investing alongside innovative technology startups working on transformative solutions.
ISAI Build Venture invests as a minority stakeholder in 15 to 20 early- to growth-stage startups across funding rounds from Seed through Series C, deploying tickets between €500,000 and €5 million per investment. The fund targets technology companies — both software and hardware — whose products address the transformation and sustainability challenges facing Bouygues' four core business segments: construction, real estate development, transport infrastructure, and energy and services. Priority themes include construction robotics, materials innovation, low-carbon building technologies, digital twins, energy efficiency platforms, and PropTech solutions that can scale across Bouygues' global operations and supply chain.
The fund structure enables portfolio companies to benefit directly from Bouygues' operational footprint and commercial networks, providing access to pilot sites, procurement relationships, and revenue-generating deployments at significant scale — a differentiated value proposition compared to purely financial VC funds. ISAI's entrepreneurial investor community and advisory ecosystem complement Bouygues' industrial backing, creating a hybrid corporate-VC model designed to combine strategic relevance with venture-speed decision-making and founder-friendly governance.