Slow build out
Slow build out is described by the government as 'where sites have full planning permission, are being built, but the pace of building is slower than it could be under different development models and incentives. Multiple market studies have found that most large housing sites are built at the pace the homes can be sold at current second-hand market prices, rather than the pace at which they could be constructed if pre-sold (i.e. to an institutional landlord). The rate of building consistent with selling at local second-hand market prices is known within the industry as the ‘absorption rate’. The Letwin Review concluded that local absorption rates were a “binding constraint” on build out rates. The CMA observed, that “the private market will not, on its own initiative, produce sufficient housing to meet overall housing need, even if it is highly competitive”.' From the government policy paper "Planning Reform Working Paper: Speeding Up Build Out" published 25 May 2025.
[edit] Related articles on Designing Buildings
- Brownfield Passport.
- Consultation on proposed reforms to NPPF and other changes to the planning system.
- Delayed Homes Penalty.
- Design Council Homes Taskforce launched to support 1.5 million homes target within UK climate commitments.
- Detailed planning permission.
- Get on and Build, Deputy Prime Minister urges housebuilders.
- Golden rules for the release of land.
- Grey belt.
- How long does it take to get planning permission.
- How long does planning permission last.
- IHBC response to revised NPPF.
- Killian Pretty Review.
- Local plan.
- Localism Act.
- National Planning Framework.
- National Planning Practice Guidance.
- Neighbourhood development order.
- Neighbourhood planning.
- New Homes Accelerator programme.
- New Towns Taskforce.
- NPPF consultation briefing notes on terms.
- NPPF inquiry.
- Outline planning permission.
- Planning approvals increased by 20% in June ahead of Labour’s new drive for housebuilding.
- Planning legislation.
- Planning overhaul to reach 1.5 million new homes.
- Planning permission.
- Planning policy replaced by the NPPF.
- The grey, the brown and the golden rules of housing.
- What do the political party manifestos say on housebuilding and building safety.
Featured articles and news
Change of use legislation breaths new life into buildings
A run down on Class MA of the General Permitted Development Order.
Solar generation in the historic environment
Success requires understanding each site in detail.
Level 6 Design, Construction and Management BSc
CIOB launches first-ever degree programme to develop the next generation of construction leaders.
Open for business as of April, with its 2026 prospectus and new pipeline of housing schemes.
The operational value of workforce health
Keeping projects moving. Incorporating unplanned absence and the importance of health, in operations.
A carbon case for indigenous slate
UK slate can offer clear embodied carbon advantages.
Costs and insolvencies mount for SMEs, despite growth
Construction sector under insolvency and wage bill pressure in part linked to National Insurance, says report.
The place for vitrified clay pipes in modern infrastructure
Why vitrified clay pipes are reclaiming their role in built projects.
Research by construction PR consultancy LMC published.
Roles and responsibilities of domestic clients
ACA Safety in Construction guide for domestic clients.
Fire door compliance in UK commercial buildings
Architect and manufacturer gives their low down.
The new towns and strategic environmental assessments
12 locations of the New Towns Taskforce reduced to 7 within the new towns draft programme and open consultation.
Buildings that changed the future of architecture. Book review.