Time on Market and Real Estate Illiquidity

A share of stock can be sold in seconds at a continuously observable price. A commercial building cannot: it has to be marketed, shown to prospective buyers, negotiated over, put through due diligence and financing, and closed — a process that typically takes anywhere from several months to well over a year, even in a healthy market. This gap is the core of what "illiquidity" means for real estate in practice, and time on market — how long a property sits for sale before finding a buyer at an agreed price — is one of the most direct ways to measure it.

Why time on market moves before price does

In a market with a continuous price, like stocks, a change in buyer demand shows up immediately as a change in price — the market clears instantly at whatever level balances buyers and sellers. In a market without a continuous price, like commercial property, a change in demand shows up first as a change in how long it takes to sell, because sellers are typically slow to cut their asking price and buyers are typically slow to raise their bids; the adjustment happens through negotiation and re-marketing rather than an instant price tick. This means time on market is often a leading indicator of where prices are actually headed, visible well before appraisals or transaction prices themselves reflect the shift.

A rising average time on market, across a market or property type, usually signals that sellers' asking prices have drifted above what buyers are actually willing to pay — a gap that eventually closes either through sellers cutting prices or through a further slowdown in transaction volume as sellers simply refuse to sell at the lower prices buyers are offering. This is also why transaction volume itself tends to collapse in a real estate downturn well before appraised values fall very much: sellers unwilling to accept the market-clearing price simply stop selling, leaving prices looking artificially stable purely because so few deals are actually happening to test them.

For example, if average time on market for office buildings in a city rises from 4 months to 14 months over a year while asking prices barely move, that's a strong signal the market has repriced downward even though few transactions have yet occurred to confirm it in the data — sellers are effectively waiting out a gap between what they want and what buyers will pay, and transaction volume in that market typically falls sharply during exactly this kind of standoff.