London's Draft London Plan sets a capacity-based target for 558,451 new homes between 2027/28 and 2036/37, equivalent to about 55,845 homes a year. The Government's standard-method assessment puts London's housing need at 84,884 homes a year, commonly rounded to about 850,000 over the same decade.
That leaves roughly 290,000 homes between assessed need and the number City Hall currently believes can realistically be planned for during the first ten years. But neither figure is a construction commitment. The 558,451 is a planning capacity target; the 850,000 is an assessment of housing need. Whether either converts into completed homes depends on viable schemes moving through planning, funding, detailed design, Building Safety Regulator approval where required, procurement and physical construction.
Modern residential development in Woolwich, south-east London, illustrating the scale and density of new housing delivery required across the capital. Original Photo: London Construction Magazine.
What Has the Draft London Plan Actually Set?
The Draft London Plan was published for consultation on 16 July 2026 and remains a draft policy document. Consultation runs until 5pm on 15 October, with an Examination in Public scheduled for 2027 and adoption currently planned for early 2028.
Under Policy HN1 and Table 3.1, borough and development-corporation targets total 502,351 homes on brownfield land and 56,100 on greenfield land. Barnet carries the largest overall allocation at 32,730 homes, followed by Ealing at 32,054, Greenwich at 27,850 and Southwark at 27,799.
The distinction between policy capacity and construction workload matters. London Construction Magazine's review of London's 2027–2030 planning pipeline found that planning permission alone is a weak indicator of when work will reach contractors. Section 106 agreements, detailed design, funding, utilities, Gateway 2, demolition and procurement can all sit between a planning decision and main construction.
City Hall Corrects Affordable Housing Need Figures
City Hall also issued an official correction on 1 September to the affordable housing need figures in Policy HN3. The corrected assessment is 238,430 low-cost rent homes and 129,020 intermediate homes by 2037, giving a combined figure of 367,450 homes.
The previous draft had incorrectly stated 219,940 low-cost rent homes and 119,940 intermediate homes. The corresponding share of overall supply was corrected from 60% to 66%. Importantly, City Hall states explicitly that these are statements of need derived from the Strategic Housing Market Assessment, not individual or collective delivery targets for planning authorities. The correction does not change the substantive policy requirement.
The Bigger Problem Is Converting Capacity Into Construction
City Hall's own Draft Plan acknowledges that land allocation alone cannot produce the required delivery rate. It identifies weak market demand, difficult viability, high build costs, interest rates and infrastructure requirements as constraints on shorter-term delivery.
For higher-risk residential schemes, regulatory clearance is another separate stage. Gateway 2 is a mandatory pre-construction approval and cannot be treated as equivalent to planning consent. London Construction Magazine has previously examined how Gateway 2 has become a programme risk for London housing. Approval performance has improved during 2026, but the process still requires mature structural, fire and design information before controlled building work can begin.
Infrastructure is equally important. The Draft Plan identifies longer-term housing capacity associated with projects including the West London Orbital and Bakerloo Line Extension, alongside additional utilities, flood infrastructure and social infrastructure. Those projects cannot simply be assumed to exist because housing capacity has been allocated around them; funding, statutory approvals, procurement and delivery remain separate requirements.
LCM Analysis: The 558,451 Homes Are a Pipeline, Not an Order Book
For contractors and suppliers, the useful question is therefore not whether London has identified enough theoretical sites. It is how many schemes can become financeable, regulation-ready construction projects during the next two to five years.
Private-market conditions remain part of that equation. LCM's recent analysis of London's new-build housing pipeline reported 5,606 new-build sales in the first half of 2026, 4,629 completed unsold homes worth around £3.5 billion and 56 paused developments containing 3,913 homes mid-completion. Those figures measure a different stage of the housing cycle from planning capacity, but they illustrate why developers may delay replacement schemes even when sites already have permission.
This is the central delivery gap behind the Draft London Plan. Policy can allocate land for 558,451 homes, but the construction market only sees work when individual developments secure the remaining approvals, finance, infrastructure, sales assumptions and contractor commitments required to start.
What Happens Next?
The London Assembly has already begun scrutinising whether the proposed housing targets can be achieved in current market conditions, while the formal Draft Plan consultation remains open until 15 October. City Hall will then review representations before the Plan moves towards examination in 2027.
For construction, the more meaningful evidence will come project by project: infrastructure funding, viable planning consents, completed legal agreements, Gateway 2 approvals, contractor appointments and sites progressing into substantive construction. Until those signals accelerate, London's 558,451-home target remains a planning ambition rather than 558,451 homes of secured construction workload.
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Expert Verification & Authorship: Mihai Chelmus
Founder, London Construction Magazine | Construction Testing & Investigation Specialist |
