Migration & Housing: The Evidence Is Genuinely Mixed

Basic economics suggests more people means more housing demand, means higher prices. The real UK evidence is more complicated than that — and depends heavily on what scale you're looking at.

How can both be true?

The UK's most-cited study on this (Filipa Sá, 2015, published in the Economic Journal) found that when immigration rises sharply in a specific local area, some existing higher-income residents move elsewhere — an outflow large enough, in the areas studied, to reduce local housing demand and pull prices down in that specific area, even as national demand and prices continue rising overall. The displaced residents' money and housing demand doesn't vanish — it typically shows up in whichever areas they move to instead, which is part of why the effect looks different depending on whether you're measuring one neighbourhood or the whole country.

Why the size of the effect varies so much

The 2018 Migration Advisory Committee study — broadly consistent with other UK government and OBR modelling — found that migration's effect on house prices was significantly larger in local authorities with more restrictive planning rules and higher rates of refusing new housing developments. This matches basic supply-and-demand logic: extra demand pushes prices up more sharply wherever new housing supply can't easily respond to meet it. Areas that build more freely tend to see a smaller price effect from the same increase in demand.

The overall, honest summary

A 2025 literature review commissioned for the Migration Advisory Committee concluded that migration is "unlikely to be a dominant driver of rising housing costs in the UK" — the effects found are real but generally modest compared to other pressures on the housing market, and the policy lever that most directly determines how much prices move is how responsive local housing supply is, not migration levels in isolation. One likely under-researched channel is the private rental market specifically, since recent migrants are disproportionately renters rather than owner-occupiers — data limitations mean this hasn't been studied as thoroughly as house prices generally.