A Draft London Plan correction has moved 3,183 homes from Wandsworth’s ten-year housing target to Merton after City Hall identified an error in the GIS mapping used to allocate housing capacity from industrial-land release.
The London-wide target has not changed. It remains 558,451 homes for 2027/28 to 2036/37 and the GLA says the methodology used to determine borough targets is unchanged.
What has changed is the allocation between 10 local planning authorities where industrial sites crossed borough boundaries and capacity had been assigned to the wrong authority.
The Draft London Plan correction came from a GIS boundary error
City Hall says the error arose in mapping industrial land used to identify housing capacity by local planning authority from industrial-land release.
A limited number of industrial sites straddled two borough boundaries. The GIS process assigned the associated housing capacity to the wrong local planning authority, so the corrected table now attributes that capacity to the borough in which it should sit.
The GLA has stressed that this does not change the London-wide housing target or the methodology itself.
Wandsworth falls by 3,183 homes and Merton rises by the same amount
The largest change is between Wandsworth and Merton. Wandsworth’s total ten-year target falls from 26,609 to 23,426, while Merton rises from 14,272 to 17,455.
The other corrections are smaller but still material to the affected boroughs:
- Lewisham falls by 776, from 14,052 to 13,276, while Bromley rises by 776, from 7,507 to 8,283
- Haringey falls by 119, from 19,030 to 18,911, while Barnet rises by 119, from 32,730 to 32,849
- Ealing falls by 75, from 32,054 to 31,979, while Hammersmith and Fulham rises by 75, from 16,784 to 16,859
- Hackney falls by 2, from 10,584 to 10,582, while Waltham Forest rises by 2, from 19,070 to 19,072
Because every reduction is matched by an equivalent increase elsewhere, the London total remains 558,451 homes.
The main consultation still closes on 15th October 2026
The ordinary Draft London Plan consultation still closes at 5pm on 15th October 2026.
The 10 local planning authorities whose brownfield housing targets have been corrected have an additional period until 23rd October 2026 to make representations about the corrections and any consequential implications for their consultation response.
The extension is not limited to the boroughs. City Hall also says any other person who considers that they are affected by the corrections may make representations by 23rd October 2026, but representations made during that additional period should relate to the Table 3.1 correction or its implications.
This is now the fourth minor correction listed by City Hall
The GLA consultation resources page now says the online and PDF versions of the Draft London Plan include four minor corrections.
On 1st September 2026, City Hall corrected affordable-housing need figures in Policy HN3.
The low-cost rent need figure was changed from 219,940 to 238,430 homes and the intermediate-housing figure from 119,940 to 129,020 homes by 2037. The related percentage of overall supply in paragraph 3.7 was corrected from 60% to 66%.
The GLA said that earlier correction did not alter the substantive policy requirement or expectations placed on plan-making authorities.
Two smaller corrections dated 27th July 2026 concerned the illustrated location of the Upminster Rainham Brownfield Land Growth area and a place-name error in Figure 6.1.
Why the correction matters
A transfer of 3,183 homes is not a change to London’s overall growth ambition, but it is significant at borough level. The corrected figures alter the scale of housing that Wandsworth and Merton would be expected to plan for under Policy HN1 if the Draft Plan proceeds in this form.
Planning Geek’s London Plan guide explains how the strategic plan fits into planning decisions across Greater London.
Our guide to the Mayor of London’s planning powers covers the Mayor’s separate role in strategic applications, while the development plan guide explains how strategic and local policies fit together.
Read the GLA’s Draft London Plan consultation resources and correction notice.
Created: 14th September 2026
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