EliseAI raises $350M at $4B for housing and health AI

EliseAI, a New York company that sells AI software to landlords and doctors' offices, has raised $350 million at a $4 billion valuation, it announced on September 29, 2026. That nearly doubles the $2.2 billion it was worth a year earlier. The round shows investors paying up for AI that does routine office work in industries far from the tech spotlight.

Andreessen Horowitz and Bessemer Venture Partners led the Series F round, according to EliseAI's announcement. Ontario Teachers' Pension Plan, Sapphire Ventures and Navitas Capital also took part.

How fast EliseAI has grown

EliseAI's price has climbed with each round. Tech Funding News lists the last three:

Round	Date	Amount	Valuation	Lead
Series D	August 2024	$75 million	$1 billion	Sapphire Ventures
Series E	August 2025	$250 million	$2.2 billion	Andreessen Horowitz
Series F	September 2026	$350 million	$4 billion	Andreessen Horowitz, Bessemer

Revenue has kept pace, the company says. Annual recurring revenue, the yearly value of its subscription contracts, passed $200 million in June 2026. EliseAI says that figure has doubled every year for five years in a row.

Its reach is wide. EliseAI says its software runs in one in six U.S. apartments, and more than 30 million Americans have used it. Tech Funding News reports that it handles about 5 million calls a month.

"The industries where AI matters most are still not the ones getting the most attention," said Minna Song, EliseAI's chief executive and co-founder. Tony Stoyanov is the other co-founder and chief technology officer.

What EliseAI's software does

In housing, EliseAI handles the work of a leasing office. It answers prospective renters, books tours, takes maintenance requests, runs lease renewals and chases payments.

Much of that now runs through Apollo, an AI agent the company launched on September 3, 2026. An AI agent is software that completes tasks on its own instead of only answering questions. Apollo works inside property management systems, the software landlords use to track units, leases and rent. It carries a task from start to finish and records when it is done, Tech Funding News reports.

In healthcare, EliseAI sells to specialty physician groups. It answers inbound calls, handles referrals and scheduling, checks insurance, prepares patient charts and follows up after visits.

Bessemer's Sameer Dholakia pointed to that mix of skills. He praised EliseAI's "AI research and engineering with a detailed understanding of how properties operate," according to CRE Daily's report on Yahoo Finance.

Where the money goes

EliseAI will spend the round on automating more of its customers' work and on hiring. It plans to grow its engineering, deployment and sales teams. San Francisco will become a second engineering hub next to its New York headquarters.

That headquarters fills 109,000 square feet in the former Tiffany & Co. building on Fifth Avenue, Tech Funding News reports. The company also has offices in Boston, Chicago, Austin and Toronto.

What this means for developers

Expect more AI agents to work inside other companies' software. Apollo does its job inside property management systems rather than in a separate app. Teams that build those systems should plan for agents as users, with clear APIs, audit logs and rate limits.

Measure the work, not the demo. Property managers and clinics weighing EliseAI or a rival should track concrete numbers in a pilot. Count tours booked, maintenance tickets closed and calls resolved without a human, and compare them with staff handling the same volume.

Check what the agent may change. An agent that renews leases or verifies insurance edits real records. Before switching one on, decide which actions need a person's sign-off, and confirm you can see and undo what it did.

Treat patient data with extra care. In healthcare deployments, ask where call recordings and chart data are stored and who can access them. Get those answers in writing before any patient data flows through the system.