Problem

Commercial office search remains slow, opaque, and poorly aligned with how modern teams work. Companies often see only the inventory available through an individual broker’s network, must contend with unverified pricing and availability, and spend weeks coordinating fragmented tours. The underlying economics favor large, long-term leases: a smaller office or shorter term can require nearly as much brokerage work while generating far less commission, leaving much of the market under-photographed, under-listed, and underserved.

The core use case is a startup or growing company that needs to relocate, expand, renew, or return to the office without committing to an unsuitable long-term lease. Tandem is designed to give that team a broader view of available space, a faster path to touring, and better information for negotiating a fair deal.

Product / Service

Tandem is an AI-native office-leasing platform delivered through a brokerage model. Tenants can browse a consolidated view of landlord listings, broker inventory, and off-market opportunities, compare spaces, schedule tours, and receive support from local experts. Its AI copilot monitors market availability, comparable rents, landlord flexibility, and other building details, while the human agent provides the white-glove guidance needed through shortlisting, negotiation, signing, and move-in.

The tenant experience is free: Tandem is paid by the landlord when a lease is signed, like a traditional broker. The service covers shared offices for roughly two-to-ten-person teams, with month-to-month terms and move-in-ready amenities, as well as private offices for larger teams with six-to-24-month leases. The intended benefit is a faster, more transparent search with fewer tours and less administrative work; Tandem claims clients see 30% or more additional spaces and complete the process about six times faster than in a traditional search.

Market

Tandem competes in commercial real estate technology, specifically AI-assisted office leasing, tenant representation, and flexible-office marketplaces. Its competitive set includes traditional office brokerages, flexible workspace operators such as WeWork and Industrious, and digital office-search alternatives including TheSquareFoot, Commery, and LeaseLeads. Tandem’s differentiation is not simply listing inventory: it combines brokerage representation and landlord-paid economics with a software layer intended to make the fragmented market searchable and actionable at startup speed.

The company is operating well beyond a pre-launch or purely pre-revenue stage. Y Combinator lists Tandem as an active Summer 2024 real-estate B2B proptech company serving New York, San Francisco, and Boston; the company reports having helped more than 500 companies, with double-digit month-over-month growth, and cites customers including Cursor, Upwork, and Apollo GraphQL. It also reports an average of 27 days from first tour to signed lease versus an industry average of roughly 180 days, and announced $6.1 million in seed funding in February 2025. The available evidence demonstrates meaningful operating traction, though it does not disclose revenue figures.