£9bn in unspent developer contributions: delivery risks for UK project teams
Reviewed by Tom Sullivan
First reported on The Construction Index
30 Second Briefing
Local authorities in England and Wales are holding more than £9bn in unspent developer contributions intended for infrastructure linked to new housing, including £6.6bn from Section 106 agreements and over £2.2bn from the Community Infrastructure Levy. Freedom of Information data from 243 councils show around £3bn has been idle for more than five years, with the average authority retaining £19m in Section 106 and £13.9m in CIL, and Tower Hamlets alone sitting on over £260m. The Home Builders Federation also identifies £320m earmarked for healthcare facilities, including £128m with 17 NHS integrated care boards, signalling coordination and delivery bottlenecks for schools, transport, utilities and community assets.
Technical Brief
- Many Section 106 agreements specify use within five years, yet funds remain beyond that trigger.
- Government’s annual affordable housing grant budget of £2.5bn–£3bn is comparable to the idle pot.
- FOI responses were obtained from 243 local authorities across England and Wales, not the full cohort.
- Concentration risk is high: a small number of councils skew the national average holdings materially.
- Around £320m is ringfenced for healthcare infrastructure, indicating potential for new clinics, expansions and fit-outs.
- Of this, £128m is already transferred to 17 NHS integrated care boards but remains uncommitted.
- Some ICB requests for release of earmarked healthcare funds have reportedly been refused or ignored by councils.
Our Take
Within our 737-item Infrastructure corpus, England-focused pieces are usually dominated by funding gaps rather than surplus capital, so £9bn of unspent obligations signals a delivery and governance bottleneck rather than a lack of finance for projects on the ground.
Average unspent Section 106 and CIL balances of roughly £19m and £13.9m per council in England and Wales are large enough to fully fund mid-scale transport, school, or utilities schemes, meaning contractors may see more work unlocked by process reforms than by new central government programmes.
The £320m in unspent healthcare-related contributions held by local authorities and NHS integrated care boards suggests that health estate upgrades in growth areas could be accelerated without waiting for Treasury allocations, provided planning teams and ICBs can align project pipelines and approvals.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.
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