The Numbers Tell a Story
London is supposed to build 88,000 new homes every year. Last year, it managed 33,989. That's less than 39% of the target, and it's a gap that compounds year after year.
For anyone buying, selling, or investing in London property, this matters more than headline figures suggest. A persistent shortfall between supply and demand shapes everything from mortgage availability to neighbourhood development to long-term value appreciation.
Why This Gap Exists
The shortfall isn't down to a single cause. Instead, it's the result of stacked pressures hitting developers simultaneously. Construction costs have risen sharply. Finance costs have tightened, with the Bank of England base rate sitting at 3.75% and two-year fixed mortgage rates averaging 6.6%. Property values haven't kept pace with these cost increases, squeezing the economics of new builds.
Planning decisions take longer than they should. Thousands of schemes that have received permission sit in limbo. Developers are caught in a squeeze: the projects don't work financially as currently structured, so they pause or repriormatise. Meanwhile, the pipeline of future completions shrinks.
Affordable housing requirements add another layer of complexity. Developers must include affordable units, which is right from a social perspective, but the way these are funded and managed can make entire schemes unviable. There's little point mandating affordable housing if it means fewer total homes get built.
What This Means for Buyers and Sellers
A genuine housing shortage has real economic consequences. In an undersupplied market, houses tend to hold value better during downturns. The UK average house price sits at £268,132 with annual change at a flat 0.0%, which reflects a stalled rather than crashing market. Scarcity provides a buffer.
For buyers, however, scarcity also means higher prices, fiercer competition, and homes that sit on the market longer in some areas whilst vanishing within days in others. Sellers benefit from strong underlying demand, but finding a property to buy can be genuinely difficult, especially if you need something specific or at a lower price point.
Mortgage rates remain elevated compared to the pandemic era. A five-year fixed sits at 5.14% average. In a shortage market, first-time buyers face a double bind: prices don't fall much, but rates are higher than they were, making monthly payments more expensive. Saving a deposit becomes harder whilst buying power shrinks.
The Ripple Effects Beyond the Numbers
Housing shortage isn't just an abstract policy problem. It drives real symptoms: overcrowded homes, longer commutes, recruitment difficulties for businesses, and swelling temporary accommodation bills. These problems make London less attractive for some workers and families, which affects property demand in outer boroughs and commuter towns.
If London's undersupply persists, we might expect to see movement towards secondary cities and satellite towns where new housing is delivered more reliably. That could actually ease some buyer and seller pressure in London itself, but it won't solve the underlying problem of a capital city that doesn't have enough homes for the people who want to live there.
What Needs to Change
Targets are useful for setting direction, but they're not delivery mechanisms. Making progress means addressing three obstacles simultaneously. First, developers need schemes that work financially. That might mean accepting lower profit margins, simplifying requirements, or public funding support for genuinely affordable homes rather than expecting developers to subsidise them indefinitely.
Second, the planning process needs to move faster. There's no point having targets if decisions take years to finalise. Streamlined approval for sites with consent could unlock stalled schemes quickly.
Third, affordable housing needs sustainable funding that doesn't make every project marginal. This is where central and local government funding becomes essential, not optional.
Your Role in This
As a buyer or seller, you can't solve London's housing shortage, but you can understand the structural forces shaping your local market. When you see new developments approved or stalled, know that the pause often reflects financial viability rather than bureaucratic indifference. When you negotiate a sale or purchase, recognise that scarcity is real and likely to persist.
If you're considering property investment in London, account for the fact that strong underlying demand is partly sustained by undersupply. That's good for value retention, but it also means affordability challenges that could eventually drive policy changes. Stay informed, move decisively when opportunities appear, and remember that housing shortage is a London reality likely to shape the market for years to come.