How Long Does Planning Permission Take?

One of the most common questions at the start of a residential project is how long planning permission will take.

For many straightforward householder applications in England, the formal determination period is typically around 8 weeks from validation. More complex applications can take longer, particularly where additional information, consultation responses or design changes are required.

The important point is that the planning timetable usually starts after the application has been validated, not from the day the drawings are first sent to the council.

What happens before the 8-week period starts?

Before a planning application can be assessed, the local authority needs to confirm that it is valid.

That usually means the submission needs to include the correct:

• application form

• planning fee

• location plan

• site or block plan

• existing drawings

• proposed drawings

• supporting information required for the particular proposal

If information is missing, the application may be held as invalid until the outstanding items are provided.

This can add days or sometimes weeks before the formal planning period even begins.

How long does a householder planning application take?

For a typical extension or alteration to a house, the council will usually aim to determine the application within 8 weeks.

This commonly covers proposals such as:

• single-storey extensions

• two-storey extensions

• side extensions

• loft-related alterations requiring permission

• garages and outbuildings requiring planning permission

• residential alterations

That does not guarantee a decision exactly eight weeks after submission.

Some applications are decided sooner, while others take longer.

How long do applications for new homes take?

Applications for new dwellings can take longer than straightforward householder work.

Smaller residential developments are often subject to a statutory target of around 8 weeks, while major development applications generally have a longer determination period.

In practice, new-build proposals can involve additional matters such as:

• highways

• drainage

• ecology

• trees

• heritage

• design

• neighbouring amenity

• affordable housing

• planning obligations

• biodiversity requirements

The more issues that need to be resolved, the more likely the application is to extend beyond the initial target period.

What happens during the planning application?

Once validated, the council will normally:

• allocate a planning officer

• publicise or consult on the application where required

• notify neighbouring properties where appropriate

• consult relevant departments or organisations

• review local and national planning policy

• assess the drawings and supporting information

• carry out a site visit where necessary

• consider representations

• prepare a recommendation and decision

The planning officer may also contact the applicant or agent if they believe amendments could make the proposal more acceptable.

How long is the neighbour consultation period?

Neighbour and public consultation is usually carried out during the determination period rather than afterwards.

The council must allow the relevant consultation period to run before making a decision.

This is one reason an application is unlikely to be determined immediately after submission, even where the proposal appears relatively straightforward.

Can planning permission take longer than 8 weeks?

Yes.

The eight-week period is a target for many applications, not a guarantee that every decision will be made within that time.

Delays can occur because of:

• high workloads at the local authority

• missing or unclear information

• consultee responses

• objections

• requested design changes

• ecology or highways concerns

• heritage considerations

• committee referral

• additional reports being required

The council may ask the applicant to agree to an extension of time where additional time is needed to determine the application.

Should I agree to an extension of time?

Often, yes, particularly where the alternative may be a refusal simply because an issue has not yet been resolved.

For example, an officer may be broadly supportive of a proposal but request:

• revised drawings

• additional landscaping

• changes to windows

• amended parking arrangements

• further technical information

Allowing a little additional time can sometimes give the project a better chance of approval.

However, an extension should still have a clear purpose. It is reasonable to ask the planning officer what remains outstanding and when they expect to make a decision.

Can amendments slow the application down?

Yes, although they can also prevent refusal.

If a planning officer raises concerns and revised drawings are submitted, the authority may need time to assess the changes.

In some cases, further consultation may also be necessary.

This can extend the overall timetable, but making sensible amendments during the application can be preferable to receiving a refusal and having to submit again.

What if the application goes to planning committee?

Some applications are decided by a planning committee rather than being determined under delegated powers by planning officers.

This can happen for a number of reasons depending on the council's procedures.

Committee applications can take longer because the proposal needs to fit within the authority's meeting schedule.

There may also be additional reporting and administrative time before the meeting takes place.

Does a pre-application make the planning process faster?

Not necessarily in terms of the formal determination period.

A pre-application does not usually shorten an eight-week planning target.

However, it can help identify likely issues before the formal application is submitted.

That may reduce the risk of:

• major redesign during the application

• unexpected policy concerns

• missing reports

• unsuitable layouts

• avoidable refusal

So although the formal application may still take a similar amount of time, the overall project can sometimes move more efficiently.

How long should I allow before submitting the planning application?

The planning decision itself is only one part of the programme.

Before submission, time may also be needed for:

• measured survey

• concept design

• client amendments

• existing and proposed drawings

• specialist reports

• planning statements

• application preparation

A straightforward extension may be ready for planning relatively quickly.

A new-build or more constrained site may require several weeks or months of design and investigation before it is sensible to submit.

What specialist reports can affect the programme?

Depending on the site, you may need reports such as:

• ecological surveys

• tree surveys

• topographical surveys

• transport or highways information

• flood risk assessments

• drainage information

• heritage assessments

• contamination reports

• biodiversity information

Some surveys can only be undertaken at certain times of year, so identifying these requirements early can be important.

For some developments, the surveys take considerably longer than the planning application itself.

What happens after planning permission is granted?

Planning approval does not necessarily mean construction can start immediately.

The next steps may include:

• reviewing planning conditions

• discharging pre-commencement conditions

• preparing Building Regulations information

• structural design

• appointing consultants

• obtaining Building Control approval

• tendering or appointing a contractor

• dealing with Party Wall matters

• arranging construction finance

For a larger project, planning permission is often only the end of the first major stage.

How long does the whole process take for an extension?

For a relatively straightforward extension, a rough programme might include:

Initial survey and design - A few weeks depending on the project and level of design development.

Planning application - Around 8 weeks following validation for a typical householder application.

Technical design and Building Regulations - Several further weeks depending on complexity.

The overall period from first appointment to being ready for construction can therefore be considerably longer than the planning determination period alone.

Can I start work while planning is still being considered?

If planning permission is required, it is generally sensible to wait until permission has been granted and any relevant conditions have been understood before beginning the development.

Starting unauthorised work carries obvious planning and financial risk.

There may also be Building Regulations, Party Wall and other requirements to deal with before construction starts.

What if the council misses the target date?

If the decision has not been issued by the target date, the application does not automatically become approved.

Your agent can contact the planning officer to establish:

• what is causing the delay

• whether further information is needed

• whether an extension of time is requested

• when the authority expects to determine the application

Good communication with the case officer can be particularly useful at this stage.

How can I reduce the risk of planning delays?

You cannot control the council's workload, but you can reduce avoidable delays by submitting a well-prepared application.

That means:

• providing the correct drawings

• checking validation requirements

• addressing obvious planning constraints

• submitting relevant supporting information

• considering neighbour relationships

• responding promptly to officer requests

• commissioning necessary surveys early

A rushed or incomplete submission can easily cost more time than it saves.

So, how long does planning permission take?

For a typical residential householder application, you should generally allow around 8 weeks from validation for the planning decision.

However, the complete process can take longer once you include design work, validation, specialist surveys, amendments and any delays during determination.

For more complicated development, particularly new homes or constrained sites, it is sensible to build additional time into the programme from the outset.

CW Architectural Design provides architectural design and planning services for extensions, renovations, new homes and residential development across Staffordshire, Derbyshire, Leicestershire and Nottinghamshire.

If you are planning a project and want to understand the likely planning route, timescale and information required, we can review your proposal and guide you through the process.

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