Extensions to time limits for implementing existing planning permissions
Generally, when a planning permission is granted, the development must commence within three years. The intention behind this time limit is to prevent the accumulation of planning permissions which are unimplemented, or ‘land banking’ by developers. It also allows councils to review the development’s suitability in the light of circumstances which may have altered over the three year period.
However, in 2009, the Labour government introduced new powers allowing the application for an extension of the planning permission if it was granted on or before 1 October 2009. This was a response to the recession that followed the 2008 credit crunch, allowing existing permissions to continue until economic conditions recovered.
In 2012, the coalition government extended the time period within which the existing permission must have been granted by one year. This meant that an application could be made to replace an existing planning permission as long as the original permission had been granted before 1 October 2010. This remained restricted to developments that had yet to be implemented.
In November 2013, the government announced that the measure would not be renewed.
The then-Planning Minister Nick Boles said scrapping the temporary measure would “increase the incentive for developers to start on site before permission expires”. The move was criticised by developers but welcomed by opponents of land banking.
Since this decision, developers with an unimplemented planning permission have had to carefully consider their strategy. While they can sometimes begin minimal works so as avoid the permission lapsing and having then to reapply, there can be pre-commencement conditions or the triggering of the community infrastructure levy (CIL) liability or section 106 agreements that could incur costs if works begin.
[edit] Related articles on Designing Buildings
Featured articles and news
Do you take the lead in a circular construction economy?
Help us develop and expand this wiki as a resource for academia and industry alike.
Warm Homes Plan Workforce Taskforce
Risks of undermining UK’s energy transition due to lack of electrotechnical industry representation, says ECA.
Cost Optimal Domestic Electrification CODE
Modelling retrofits only on costs that directly impact the consumer: upfront cost of equipment, energy costs and maintenance costs.
The Warm Homes Plan details released
What's new and what is not, with industry reactions.
Could AI and VR cause an increase the value of heritage?
The Orange book: 2026 Amendment 4 to BS 7671:2018
ECA welcomes IET and BSI content sign off.
How neural technologies could transform the design future
Enhancing legacy parametric engines, offering novel ways to explore solutions and generate geometry.
Key AI related terms to be aware of
With explanations from the UK government and other bodies.
From QS to further education teacher
Applying real world skills with the next generation.
A guide on how children can use LEGO to mirror real engineering processes.
Data infrastructure for next-generation materials science
Research Data Express to automate data processing and create AI-ready datasets for materials research.
Wired for the Future with ECA; powering skills and progress
ECA South Wales Business Day 2025, a day to remember.
AI for the conservation professional
A level of sophistication previously reserved for science fiction.
Biomass harvested in cycles of less than ten years.
An interview with the new CIAT President
Usman Yaqub BSc (Hons) PCIAT MFPWS.
Cost benefit model report of building safety regime in Wales
Proposed policy option costs for design and construction stage of the new building safety regime in Wales.
Do you receive our free biweekly newsletter?
If not you can sign up to receive it in your mailbox here.






















