The market

How a local housing market works

National housing figures describe something nobody ever buys. What a household actually faces is a market of a few streets, a few dozen suitable homes, and a handful of sales a year.

Stock is large, trade is tiny

Every area holds a fixed quantity of housing: the stock. In any given year only a small fraction of it changes hands. That gap between what exists and what trades is the single most important fact about housing markets, and it explains most of their odd behaviour.

Because trade is thin, prices are not set by the stock as a whole. They are set by whichever few homes happen to be for sale, and by whichever few buyers happen to be looking in the same month. Two similar houses can sell months apart at noticeably different figures without anything in the wider economy having changed. One met three interested buyers; the other met one.

This is why a single unusual sale can shift what an entire street believes it is worth. In a market with thousands of daily trades, an outlier is noise. In a market with four trades a season, an outlier becomes the reference point in every conversation that follows.

Turnover and why it varies

Turnover — the share of homes sold in a year — is not uniform. Streets of small flats near a station turn over quickly, because the people who buy them are at a stage of life that changes fast. Streets of large family houses turn over slowly, because the people who buy them intend to stay for a decade or more.

Low turnover makes a market harder to read. There is less recent evidence, so estimates lean on older sales and on comparisons with nearby streets that may not be genuinely comparable. It also makes prices stickier: when demand falls, owners who do not have to move simply do not move, so fewer sales happen rather than cheaper ones.

Chains, and the mechanics of everyone moving at once

Most buyers of an ordinary home are also sellers of one. Their purchase cannot complete until their own sale does, and their buyer is in the same position. The result is a chain: a sequence of linked transactions that must all complete on the same day.

A chain is only as reliable as its least certain link. This is why the position of a buyer matters as much as the figure they offer. Someone with nothing to sell can complete on their own timetable. Someone at the top of a four-household chain cannot, however much they want to.

Chains also explain why housing markets seize up rather than gently slow. When confidence falls, the marginal link breaks, and a broken link takes several otherwise sound transactions down with it.

Reference prices and how they form

Nobody knows what a particular home is worth. What people have instead is a set of reference points: what the house across the road achieved, what a similar house two streets away is asking, what the current owners paid. Negotiation is largely an argument about which of those reference points is the right comparison.

This is why the presentation of comparable sales carries so much weight, and why the definition of the local area is itself contested. Draw the boundary one street wider and a different set of comparisons becomes admissible. Both sides in a negotiation are usually drawing that boundary to suit themselves, quite sincerely.

Reading a market without data you do not have

A useful picture of a local market can be built from things anyone can observe: how many homes are for sale relative to the usual number, how long boards stay up, how often asking prices are revised downwards, and whether sales are agreeing quickly or drifting.

None of this is precise. It does not need to be. The purpose is to know whether the market you are entering is one where buyers or sellers are currently short of options, because that single fact shapes every subsequent decision more than any refinement of the figures.