The French startup has powered €600M in annualised sales and is now launching ZIA, an AI assistant for home buyers.
Paris-based real estate marketplace Zefir has raised €15 million in a Series B round led by FinTech Collective, bringing its total funding to €50 million. Existing backers Sequoia Capital, Zigg Capital, and Heartcore Capital joined the round, alongside new investors TX Ventures and FJ Labs.
Founded in 2020, Zefir uses AI to simplify and accelerate residential property transactions. The company says its platform has supported more than €600 million in annualized home sales by nearly halving transaction times and boosting agent revenues.
Until now, Zefir has focused on helping sellers. With the launch of its AI-powered home-search assistant, ZIA, the company is expanding to the buy side. ZIA functions as a digital buyer’s agent, helping users filter listings, compare options, and secure viewings more efficiently.
“Now we’re doing the same for buyers” said co-founder and CEO Rémy Fabre. “In a market where they have no agent on their side, our AI assistant gives them clarity, speed, and confidence.”
The company says homes sell nearly twice as fast on its platform, with agents earning up to €100,000 more annually. By qualifying buyers before they reach an agent, ZIA reduces wasted enquiries and helps professionals close deals more quickly. Over 4,500 agents are already using the platform.
“Zefir has already transformed the sell-side experience in France” said Toby Triebel, partner at FinTech Collective. “With ZIA, they’re now bringing that same innovation to buyers—delivering a rare trifecta of network effects, transactional velocity, and AI-driven utility.”
Fabre sees Zefir as a unifying infrastructure for European real estate, where AI can make transactions faster and more transparent. The new funding will support expansion into France’s 15 largest cities, continued product development, and team growth, with headcount set to double by 2026.