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Land·Gap

How much land each council still has to find for new homes

London

Hounslow must find land for 80 more homes

Hounslow has to plan for 2,086 new homes a year, 10,430 over 5 years. Its brownfield register holds land for about 10,352 of them.

Brownfield with permission: 10,108 Other brownfield on the register: 244 Still to find: 80

Brownfield cover

99%

of 5 years' need, calculated. How

Still to find

80

homes over 5 years

Housing Delivery Test

76%

of required homes built, 2025 measurement

Delivery

Over the three years to March 2025, Hounslow delivered 4,083 of the 5,346 homes it was required to: 76%. The government's published consequence: the council must add a 20% buffer to its land supply.

What is on the brownfield register

173 live sites covering 64 hectares, of which 37 have no planning permission yet.

A council short of land has to find more, and the 17 August 2026 planning framework widened what counts as grey belt. This page describes the council's position. It does not say whether any particular piece of land would get permission.

Housing Delivery Test 2025 measurement, published 17 August 2026.