Commercial planning permission doesn’t last for ever. A typical commercial scheme may involve significant scale, longer lead-in times or complex planning conditions. Any lengthy delay in commencing development after planning permission is granted could lead to a planning permission expiry risk that needs to be actively managed.
This guide explains how long planning permission lasts for commercial development in the UK, what can affect its validity, and the options available to commercial developers if permission is close to expiry or has already lapsed.
Understanding Commercial Planning Permission Duration
In most cases, planning permission for commercial developments lasts three years from the date it is granted. This is the same standard time-limit that applies to homeowner development, despite the considerable difference in typical scale between an average commercial and homeowner project. This time limit is set out under Section 91 of the Town and Country Planning Act 1990 and applies to the majority of full grants of planning permission.
To maintain the validity of your commercial planning permission, your commercial development must be lawfully commenced within that period. This requires that a ‘material operation’ is undertaken at your site, such as excavating foundations, construction works or demolition. It’s important to note that any pre-commencement conditions attached to the planning permission must already have been formally discharged before works begin, otherwise your commencement may not be considered lawful. Our guide on homeowner planning conditions provides general information on pre-commencement conditions that may be useful.
Commercial developments are more likely than homeowner schemes to involve outline planning permission, particularly on development land. In these cases, the initial outline approval establishes the principle of development, but further “reserved matters” applications must be approved before work can start. Each stage has its own statutory time limits, which are covered in more detail below.
When Other Expiry Time Limits May Apply
While three years is the standard deadline for most full planning permission grants, commercial developments are more likely to be subject to alternative or staged time limits. When this happens, it is usually due to the scale of development, the use of outline permissions, or phased delivery across development land.
Outline Planning Permission and Reserved Matters
A large commercial development may be approved at outline stage, particularly on large sites or development land. An outline planning permission establishes the principle of development, but can include matters of detail (such as, access). Detailed matters such as layout, scale, appearance, access and landscaping are reserved for later approval by the Local Planning Authority (LPA). These details must be approved through one or more reserved matters applications before development can lawfully begin.
Because of these structural differences from a standard application, statutory time limits differ for outline planning permission grants. Reserved matters applications must be submitted within three years of the outline permission being granted, and lawful commencement must take place within two years of the final reserved matters approval. If either of these deadlines is missed, the original outline permission will lapse.
Multiple Reserved Matters Submissions
On larger commercial sites, reserved matters may be approved in stages rather than as a single submission. Each reserved matters approval may carry its own conditions, including pre-commencement requirements that must be discharged before work starts.
Until all required reserved matters are approved and relevant conditions discharged, development cannot be lawfully commenced. This layered process can take a significant amount of time, particularly if the relevant LPA has a significant backlog of applications. When a significant number of contingent stages are required expiry risk may arise and need to be managed.
Phased and Hybrid Permissions
Larger commercial schemes may be approved with phased implementation conditions, allowing different parts of a site to be developed at different times. “Hybrid permissions” may also be granted, meaning a development has been granted full planning permission for one part of a site with outline permission for the remainder.
In both of these cases, different elements of the same commercial development may be subject to different commencement deadlines.
LPA Varies the Standard Three-Year Period
LPAs have the power to impose shorter or longer time limits where justified. This may occur where development is time-limited, linked to wider regeneration or infrastructure programmes etc.
What Factors Increase the Risk of Commercial Planning Permission Expiring?
A small number of factors can combine and lead to a planning permission expiry risk that needs to be actively managed.
Extensive Pre-Commencement Conditions
Large or mixed-use schemes commonly include conditions relating to drainage, highways, contamination, ecology or phasing. Until these conditions are discharged, development cannot lawfully begin.
Phasing and Infrastructure Dependencies
A commercial development may rely on financing, tenant agreements or off-site infrastructure works. Delays outside the planning system can push projects beyond the standard three-year commencement window.
Policy Changes and Site Context
Local planning policy can change significantly over a three-year period, particularly where new Local Plans or town centre strategies are adopted. Even where permission is still live, changes to surrounding development or highways arrangements can affect the viability of commencement.
Consequences of Expired Commercial Planning Permission
If commercial planning permission expires before lawful commencement, it ceases to have legal effect and development cannot proceed. For commercial developers, this can have serious consequences:
- A fresh planning application is required, with no guarantee of approval
- Planning policy may now be more restrictive
- Viability assumptions may no longer hold
- Professional reports may need updating or replacing
On development land, an expired permission can materially affect site value, particularly where the land was acquired based on an approved scheme. In turn, this may affect the viability or conditions attached to development financing.
Renewing and Extending Commercial Planning Permission
Because there is no mechanism to renew planning permission once it has expired, it’s extremely important to take action to mitigate expiry risk prior to the deadline.
Lawful Commencement
Commencing development before expiry is generally the simplest way to mitigate expiry risk. Expediting fulfilment of pre-commencement conditions may be necessary to ensure lawfulness.
Section 73 Applications
Where changes are required to approved conditions, a Section 73 application may be used to vary or remove those conditions, resulting in a new standalone planning permission with its own time limit. This route cannot revive an expired permission but can be used strategically before expiry. Whilst targeted at homeowners, our guide on Changing Planning Permission has generally applicable information that explains this process in more detail.
A Fresh Application
If expiry is unavoidable, a new application will be required. While previous approvals are a material consideration, Local Planning Authorities are entitled to reassess proposals against current policy and circumstances.
What to Do if Commercial Planning Permission Has Expired
If you are dealing with expired planning permission on development land or a commercial scheme, the first step is to establish whether development was in fact ever lawfully commenced. Assessing available evidence and appropriate liaison with your LPA may find that some form of lawful commencement actually took place.
If the scheme was not lawfully commenced, a fresh planning strategy is required. An updated strategy should consider the following:
- Whether the original scheme remains policy-compliant
- Whether changes to design or use are now advisable given current local policy
- How to minimise risk and delay in a fresh application
Where works may already have taken place, enforcement risk should also be assessed and managed if required. Our article on Planning Enforcement Time Limits: What Homeowners Need to Know has useful general information on immunity periods and enforcement powers operate.
How a Planning Consultant Can Help
Planning permission expiry risk can jeopardise the financial viability and ROI of a commercial development. When planning permission has expired or expiry risk needs to be actively managed, a planning consultant can help by:
- Reviewing approvals and confirming whether lawful commencement has occurred
- Advising on condition discharge strategy and sequencing
- Preparing Section 73 or fresh planning applications where required
- Liaising with the relevant LPA to manage risk and delay
Holland Lloyd is a trusted advisor for major commercial developers in England and Wales. Our extensive experience of working on high-profile commercial projects gives us the experience you need to advise on mitigating planning expiry risk. Whether you are safeguarding an existing approval or reassessing a site with lapsed permission, our Developer and Landowner Service can help you move forward with clarity and confidence.
FAQs
How long does planning permission last for commercial development?
In most cases, three years from the date of approval, unless a different timeframe is specified in the decision notice.
Can outline planning permission expire?
Outline planning permission is subject to different statutory deadlines. Outline permissions have their own time limits, and reserved matters must be approved before development can lawfully begin.
Can expired planning permission on development land be reinstated?
Once expired, a new planning permission must be obtained.
Does starting minor works keep permission alive?
Only if works amount to lawful commencement and all pre-commencement conditions have been discharged.
Should I seek advice before expiry?
Early advice can help avoid expiry, reduce enforcement risk and protect the value of a commercial site. If you have a permission expiry risk you are seeking to manage we recommend contacting us as soon as possible for assistance.