London Housing: The Decisions That Will Define the Next Five Years

The number is stark. London needs roughly 66,000 new homes every year to keep pace with demand. Last year it built fewer than 30,000. That gap — accumulated across a decade of stalled schemes, viability disputes and planning appeals — is now the central problem facing both City Hall and Whitehall, and the decisions arriving this autumn will either start closing it or entrench it for another generation.

The urgency is real. Keir Starmer's government has staked a significant portion of its domestic credibility on planning reform, with the revised National Planning Policy Framework already forcing local authorities to update their housing targets by the end of 2025. London boroughs are now scrambling to revise Local Plans under pressure from a housing secretary who has repeatedly threatened to direct-grant planning permission over the heads of councils that miss their allocations. For London, that creates a peculiar political triangle: the Labour government in Westminster, Sadiq Khan at the Greater London Authority, and 32 borough councils — many of them Labour-run — who are quietly resistant to the density the policy demands.

The Sites That Matter Most

Three locations will act as bellwethers for the wider programme. Old Oak Common, a 650-acre regeneration zone straddling Ealing and Hammersmith & Fulham, is the largest development site in the capital and arguably the country. The Old Oak and Park Royal Development Corporation is supposed to deliver 25,500 homes there by 2040, alongside the HS2 and Elizabeth line interchange. Progress has been painfully slow — outline planning permission was granted in 2021, but housebuilders have been reluctant to commit at scale while HS2's western leg remains in limbo. A government decision on HS2 phasing, expected before the end of 2026, will either unlock or effectively mothball the site's commercial logic.

Further east, the Silvertown development in Newham — a 3,000-home mixed-use project on the north bank of the Royal Docks — is approaching a critical viability review this winter. Rising construction costs have led the developer, Lendlease, to renegotiate affordable housing contributions on similar Thames-side sites elsewhere. Campaigners from the Newham Housing Campaign argue that the 35 percent affordable housing threshold already agreed is the minimum acceptable. The GLA, which has part-funded infrastructure on the site through its Homes for Londoners programme, will have to decide how hard to push before a developer simply walks.

In Haringey, the Tottenham Hale masterplan — centred on the area around the bus station on Jarrow Road — has planning consent for around 5,000 homes but is moving through reserved matters applications at a pace that frustrates local councillors. A scheduled Section 106 renegotiation in September will test how much affordable provision survives contact with post-pandemic build-cost inflation.

What the Numbers Reveal

Average private rents in London hit £2,650 per month in the first quarter of 2026, according to Rightmove data — a 6.2 percent rise year-on-year that outstripped wage growth in the capital by a factor of roughly three. Social housing waiting lists now stand at over 330,000 households across London boroughs, with Tower Hamlets and Southwark each carrying lists of more than 20,000 applicants. Against that backdrop, the GLA's own target — 40,000 affordable homes started between 2021 and 2026 under the Affordable Homes Programme — looks likely to fall short by around 12,000 units, partly because rising interest rates made grant-funded schemes unviable for housing associations through 2023 and 2024.

The next 12 months will be defined by several concrete decision points. The government's Spending Review settlement for the Affordable Homes Programme beyond 2026 is due in late autumn, and housing associations are lobbying for grant rates of at least £175,000 per unit in London — up from the current £112,000 — to reflect actual build costs. Without that uplift, starts will continue to slide. Borough Local Plans for Lambeth, Brent, and Lewisham are all in examination before the Planning Inspectorate this year, and their outcomes will signal how much higher-density development in outer London town centres the system will actually accept. Anyone waiting to buy or rent in the capital had better watch those decisions closely. The cranes do not lie.