Who actually lives in your new neighbourhood

A viewing tells you about a flat. The walk from the station tells you about the neighbourhood, and most people read it without being able to say what they read.

Usually it is two things: how old everybody is, and whether they own or rent. Both vary across London far more than people expect, and both are published.

Age

The spread on 18–29s is roughly threefold between the top and bottom of London. The City of London is an outlier for structural reasons — a very small resident population dominated by young professionals — but the pattern behind it is real: Tower Hamlets, Camden, Lambeth and Islington all sit far above the London middle.

Now the same measure at the other end of the age range:

Almost an exact inversion. Bromley, Havering and Bexley lead on over-65s and sit near the bottom on young adults. Tower Hamlets is last on over-65s and second on 18–29s.

This is the clearest single split in London demographics, and it maps closely onto inner and outer — which we went through in inner vs outer London.

Tenure

The ownership figure is close to a mirror of that. Bromley, Havering and Bexley are around two-thirds owner-occupied. Tower Hamlets, Hackney and Islington are closer to a quarter.

Social renting is distributed differently again, concentrated in Southwark, Islington, Hackney and Camden — inner boroughs with large post-war estates, which is a different story from the private-rental concentration in Westminster and Kensington and Chelsea.

What this actually predicts

Not much about quality of life directly. Quite a lot about texture.

Turnover. A high private-rented share means most of your neighbours will be different people in three years. That cuts both ways — easy to arrive and blend in, harder to build the kind of street where people take in each other's parcels.

What the high street sells. Areas with a high 18–29 share support different businesses from areas with a high over-65 share. This is the thing you are actually reading on that walk from the station.

How quiet it is. Not reliably, but there is a tendency, and it is one of the few things people can rarely change their mind about after moving.

Whether your life will be legible to your neighbours. Being the only household with a toddler on a street of young renters is a different experience from being one of many.

Why we show these and never score them

Every one of these figures appears on our borough pages and on the map. None of them contributes to the AreaScore.

That is deliberate, and it is the most important thing in this post. Crime, transport, schools and green space can be argued to be better or worse in a fairly uncontroversial way — more recorded crime is worse, more stations are better.

Age and tenure cannot. A high share of 25-year-old renters is exactly what one person is looking for and exactly what another is avoiding. Scoring it would mean deciding, on your behalf, that one kind of neighbourhood is better than another — which is not a judgement any dataset entitles us to make.

How to use them

Look them up for anywhere you are seriously considering, and ask one question: is this a place where my household would be unremarkable?

There is no right answer. But being the exception is a real, daily thing, and it is much easier to find out now than after a year's tenancy.

Every borough's age and tenure breakdown is on its own page alongside crime, transport, schools and green space, all ranked against the other 32.