'Affordable housing' is an official planning term, not a description of a cheap flat — and that confuses a lot of people. It covers several different products, delivered mainly through the planning system, and 'affordable' has a specific meaning that doesn't always match what it sounds like. Here's the plain-English version.
The short answer
Affordable housing is housing provided to people whose needs aren't met by the open market, at a cost below full market price or rent. Crucially, it's a category defined by policy, not a synonym for 'low-cost' — an 'affordable rent' can still be a substantial sum in an expensive city.
| Type | How it works | Roughly who it suits |
|---|---|---|
| Social rent | Lowest rents, set by a national formula; let by councils and housing associations | Those in greatest housing need, via the council register |
| Affordable rent | Up to around 80% of local market rent | Households who can pay more than social rent but not market rates |
| Shared ownership | Buy a share (often 25–75%), pay rent on the rest, staircase up over time | Buyers priced out of full ownership |
| First Homes | New homes sold at a discount to market price for eligible local/first-time buyers | First-time buyers with a local connection |
A large share of affordable housing comes from private developments. Through planning obligations — chiefly Section 106 agreements — councils require developers to include a proportion of affordable homes (or a payment in lieu) as a condition of consent. Government grant funding and housing associations do the rest. It's also central to the Grey Belt 'golden rules'.
Eligibility depends on the product and the local authority. Social and affordable rent is usually allocated via council housing registers based on need; shared ownership and First Homes have income caps and often local-connection or first-time-buyer conditions. There's no single national rule — it's set locally within a national framework.
Shared ownership lets you buy a share of a home (commonly a quarter to three-quarters) and pay rent on the rest, with the option to buy more over time ('staircasing'). It lowers the deposit and income needed to get in, though you pay both a mortgage and rent — worth modelling in our calculators and reading alongside Can I Afford To Buy A House?
The word 'affordable' does a lot of heavy lifting. Where market prices are very high, even discounted homes can be out of reach for the people the label implies. It's a useful system, but the name oversells it — which is why understanding the specific product matters more than the headline word.
It's an official term for housing provided below market price or rent to people whose needs aren't met by the open market. It covers several products and does not simply mean 'cheap housing'.
The main types are social rent, affordable rent (up to around 80 per cent of market rent), shared ownership, and First Homes (discounted market sale for eligible buyers).
Largely through planning obligations on private developments — chiefly Section 106 agreements — alongside government grants and housing associations.
It's cheaper than the open market, but in high-price areas even discounted homes can be a stretch. The specific product and local prices matter far more than the label.