Modus aedificandi reimagines real-estate development by putting future residents at the center of the design and construction process, turning each purchase into a co-creation journey. Its flagship product, the “Immeuble Idéal,” offers on-demand architecture that can adapt to individual lifestyles while meeting stringent environmental standards. The company’s model emphasizes rebuilding the city on existing footprints, minimizing land artificialization and prioritizing durable, low-impact construction methods. A first demonstration project in Marseille’s 5th arrondissement has already been 60 % commercialized, validating market appetite for this approach. Founder and president Billy Guidoni asserts that today’s buildings must anticipate tomorrow’s climatic, social and economic challenges, driving the startup’s holistic overhaul of the real-estate value chain. Fresh capital will be used to scale the concept nationally, broadening access to tailor-made, eco-friendly housing. With €1.2 million newly raised, Modus aedificandi is moving from a local proof-of-concept toward a wider commercial rollout.

Total raised

$1M

Funding rounds

1

Latest round

Equity

Latest activity

Feb 2026