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
ECA, JIB and JTL back Fabian Society call to invest in skills for a stronger built environment workforce.
Women's Contributions to the Built Environment.
Calls for the delayed Circular Economy Strategy
Over 50 leading businesses, trade associations and professional bodies, including CIAT, and UKGBC sign open letter.
The future workforce: culture change and skill
Under the spotlight at UK Construction Week London.
A landmark moment for postmodern heritage.
A safe energy transition – ECA launches a new Charter
Practical policy actions to speed up low carbon adoption while maintaining installation safety and competency.
Frank Duffy: Researcher and Practitioner
Reflections on achievements and relevance to the wider research and practice communities.
The 2026 Compliance Landscape: Fire doors
Why 'Business as Usual' is a Liability.
Cutting construction carbon footprint by caring for soil
Is construction neglecting one of the planet’s most powerful carbon stores and one of our greatest natural climate allies.
ARCHITECTURE: How's it progressing?
Archiblogger posing questions of a historical and contextual nature.
The roofscape of Hampstead Garden Suburb
Residents, architects and roofers need to understand detailing.
Homes, landlords. tenants and the new housing standards
What will it all mean?
The Architectural Technology podcast: Where it's AT
Catch-up on the latest episodes.
Edmundson Apprentice of the Year award 2026
Entries now open for this Electrical Contractors' Association award.
Traditional blue-grey slate from one of the oldest and largest UK slate quarries down in Cornwall.
There are plenty of sources with the potential to be redeveloped.