Why Planning Delays Are Holding Back Affordable Housing Delivery

The UK affordable housing sector is increasingly affected by one of the most persistent barriers in housebuilding today: planning delays. According to the Resolution Foundation, planning approvals in England fell to their lowest levels in recent decades during Q4 2024, with only 7,356 housing development approvals in that quarter – the lowest since 1979. [Resolution Foundation]

This drop is not just a statistical outlier. In the 12 months to mid‑2024, only 230,000 new homes had planning approval – the lowest figure since the early 2010s. [Homebuilding Resolution Foundation] Particularly troubling is how this affects the affordable housing pipeline, where delays strain funding cycles, push up costs, and reduce the predictability that Housing Associations, SME developers, and investors rely on. [Resolution Foundation]

Key Impacts on Affordable Housing

• Delays in decision-making reduce the effective time available for construction, increasing cost risks for smaller developers.
• Funding and grant schedules (for affordable rent / supported housing) often depend on projected delivery dates; delays make these harder to meet.
• Uncertainty in policy / local authority expectations creates design / cost changes mid‑process – which again disproportionately impacts smaller, leaner teams.

What Needs to Change

• Local authorities need more resources and staffing to process planning applications faster.
• Clear, consistent policy signals from government to reduce post‑application revisions and avoid frequent changes in requirements.
• Improved collaboration between developers, housing associations, and LPAs earlier in the process to avoid delays and rework.

Why It Matters

The delay in planning doesn’t just slow down housing delivery – it has real human consequences. With over 1.2 million households on local authority waiting lists for social or affordable housing in England alone, slow approvals mean people stay in unsuitable, overcrowded, or unsafe housing for longer. [Resolution Foundation]

For developers like Alderley Group and our partners, navigating this regulatory bottleneck is part of our operational focus. We continue to engage with LPAs, focus on design clarity, and seek to mitigate these delays proactively.

❓ What was your experience of the planning system in 2024? Which reform would make the biggest impact where you operate? Let us know in the comments.