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London's Housing Pipeline Is Under Pressure — Could Today's Development Slowdown Become Tomorrow's Shortage?

By Philips Omaojo Sanni | September 10, 2026

London's housing market could be facing a problem that will not be fully visible in today's property statistics.

The concern is not simply how many homes are available now, but how many homes will be available several years from now.

John Mulryan, chief executive of developer Ballymore, has warned that London's housing difficulties could become considerably more severe because the volume of new private-sector development has fallen sharply.

Ballymore says it has a pipeline of around 16,000 planned homes but is currently building only about 1,000 homes a year. The company also points to higher construction costs and planning constraints as factors making large developments more difficult to deliver.

Why today's construction matters tomorrow

Housing development operates on a long timeline.

A large residential scheme can require:

  1. Land acquisition

  2. Planning approval

  3. Financing

  4. Design

  5. Construction

  6. Sales or letting

Consequently, a reduction in development activity today can affect housing availability several years later.

This creates a potential mismatch between immediate market conditions and future supply.

London's affordability problem is already significant

London remains one of Britain's most expensive property markets.

That makes new housing supply particularly important.

If construction slows while population and household demand continue to grow, competition for available properties could increase.

The effects could appear in different parts of the market.

Potential consequences include:

  • Higher rents

  • Greater competition between buyers

  • Longer waiting periods

  • Increased pressure on existing housing stock

  • Reduced housing affordability

However, these outcomes are not guaranteed. Economic conditions, planning reforms, construction costs and investment decisions will all influence the eventual result.

Why developers are concerned about costs

Construction projects need to remain financially viable.

If the cost of labour, materials, finance and land rises faster than the expected selling prices or rents, developers may delay or cancel schemes.

That is particularly important in London, where large projects require substantial capital.

Ballymore has said that projects such as Royal Wharf would be considerably more expensive to build under today's conditions than when the development originally began.

Planning is another part of the equation

Planning policy has a direct effect on how quickly housing can be delivered.

Even where demand exists, developers cannot simply begin constructing thousands of homes without obtaining the necessary permissions.

This makes planning reform an important part of the debate about London's housing supply.

Could fewer new homes eventually push prices higher?

Potentially.

If demand exceeds the number of homes available, prices and rents can come under upward pressure.

But the relationship is not immediate.

Higher mortgage rates, weak economic growth or falling household purchasing power could offset some of the effect of limited supply.

That is why London's future housing market will depend on both demand and supply.

What this means for buyers

People considering buying in London should pay attention to more than current asking prices.

The development pipeline can provide clues about how much new housing could enter a local market.

A neighbourhood with substantial future construction may experience a different supply environment from an area where very few new homes are being planned.

What it means for investors

Property investors should also consider the supply pipeline when assessing a location.

A market with strong rental demand but very limited future supply may have different long-term characteristics from one with thousands of new properties scheduled for completion.

However, investment decisions should not be based on supply alone.

Employment, transport, affordability, taxation, financing costs and tenant demand remain important.

The bigger picture

London's potential housing problem illustrates why property markets should be viewed over several years rather than several weeks.

Today's slowdown in development may not produce an immediate shortage.

But if fewer homes continue to enter the construction pipeline, the consequences could become more significant later in the decade.

For London policymakers, developers and residents, the question is therefore not only how many homes are available today, but whether enough homes are being planned and built for tomorrow.

Source: Recent reporting on Ballymore's London development pipeline and the challenges facing residential construction.