The cost of a planning application

Topics: planning

Hackney House: an architect designed rear extension in East London

Planning application costs can vary substantially depending on the nature of the consent sought. This article explains the costs of each type of application and also outlines project-specific consultant fees.


Architecture for London is an RIBA Chartered Practice. Contact us on 020 3637 4236 or view our portfolio of recent residential projects.


How much does a planning application cost in the UK?

The cost of a planning application is £528 in England. This is the new cost for a householder application, and it applies from 2025 onwards. Householder applications are appropriate for alterations to single houses, including extensions and alterations.

For multi-unit housing planning applications, costs from 2026 are as follows:

  • Extensions and/or alterations to two or more dwellings: £1,043
  • Residential new-build (fewer than 10 homes): £588 per dwelling
  • Residential new-build (from 10 to 50 homes): £635 per dwelling
  • Residential new-build (over 50 homes): £31,385 plus £189 for every dwelling

 

Brondesbury architect designed house extension with black timber cladding and glass
Our rear extension and loft conversion in Queen’s Park

Costs of a lawful development certificate

The cost of an application for a ‘proposed use’ lawful development certificate is 50% of the cost of the corresponding planning application. For a householder project, the LDC would, therefore, be £264.

Lawful development certificates are usually sought where an applicant wishes to confirm that any proposed alterations fall within permitted development and therefore do not require planning permission.

Costs of outline planning applications

When a proposal is still at an early stage of development, an outline application can ascertain whether it is likely to be approved by a local authority. This is useful to establish a principle of development before having to make all decisions in relation to design and materials.

  • For sites between 0.5 and 2.5 hectares, an outline planning application will cost £635 per 0.1 hectare.
  • For sites above 2.5 hectares, an outline planning application will cost £15,695 plus £189 per 0.1 hectare.

 

de beauvoir house extension in a conservation area in traditional materials including brick and oak
Our brick rear extension in De Beauvoir

Pre-application advice costs

Pre-application advice allows discussion with a planning officer before submitting a planning application. Costs can vary from borough to borough, and there are no statutory limits on the cost of pre-app advice.

Various levels of service are usually available. Level one may include written feedback and a follow-up letter, and may be in the region of £600 for a small project like a house extension. Level two may include a face-to-face meeting with a planning officer, typically costing around £1,000 for a small project.

Planning application costs: appeals

There is generally no cost for making an appeal, with the exception of enforcement appeals. However, parties to appeals are expected to meet their own consultant expenses.

An appeal is usually carried out by either an architect or a planning consultant, and their fees typically begin at around £2,500 for a small householder project. The consultant will prepare a statement of the applicant’s case with details of common ground, the expected appeal route, and the required evidence.


Contact us now on 020 3637 4236 for a free 30-minute telephone consultation to discuss your project.


It is worth noting that the appeal process can often take six months or longer. This additional time may have cost implications if a property or site is mortgaged.

It is possible to submit a claim for costs if you feel that the local planning authority has behaved unreasonably.

 

Angel house extension refurbishment architect
Our contemporary lower ground floor house extension in Islington

Commercial planning application costs

For the erection of workplace architecture projects that are not agricultural, the following application costs apply:

  • 0-40 sqm increase in gross floor area: £298
  • 40-1000 sqm increase in gross floor area: £588 for each 75 sqm or part thereof
  • 1000-3,750 sqm increase in gross floor area: £635 for each 75 sqm or part thereof
  • more than 3,750 sqm increase in gross floor area: £31,385 plus £189 for each additional 75 sqm

Planning Performance Agreements

Planning Performance Agreement costs are typically around £5,000 for a complex householder project, £10,000 for a minor proposal (e.g. ten new homes) and as much as £30,000 for major proposals of one hundred homes or more.

These agreements are typically used in larger projects to manage the planning application process more efficiently. They are made voluntarily between the applicant and the local authority to encourage a collaborative working approach. PPAs are usually agreed during pre-app discussions.

There are many different models of PPA. These agreements usually aim to fix certain criteria in relation to timescales and resources, whilst making the planning process more transparent. The key programme item to be agreed is the length of the determination period, i.e. from submission of an application until a decision is made. This helps to give a developer more certainty and therefore reduces risk at these crucial early stages of a project.

 

planning application costs drawing
Planning drawings for a house in Highgate by Architecture for London

The cost of planning application drawings

In addition to the fees payable to the local authority, there may be significant consultants’ costs in producing the necessary drawings and documentation. To submit for planning, several documents are required as specified at the national level. In addition to this, local planning authorities may have their own requirements that need to be adhered to.

Submission documents typically include drawings, visualisations, a Design & Access Statement and the application forms. For larger projects, the list of planning documentation can be significantly longer.

 

planning application block plan - architects plans with scale bar
Planning drawings for a house in Highgate by Architecture for London

Additional project-specific requirements will incur further costs and may include:

  • Flood risk assessment; expect to pay at least £1,000, potentially significantly more depending on the risk area
  • Basement impact assessment; expect to pay at least £2,500 according to complexity and size
  • Sun and daylight assessments; expect to pay at least £2,000

Total consultant fees to the planning application stage

By this stage, you will have appointed an architect, possibly a quantity surveyor and a structural engineer. Likely, you have also commissioned a survey of the site or building. For a small-scale or domestic project with a construction budget of around £300,000, expect fees for all consultants to be in the region of £20,000 to reach the planning application stage.

While clients will often require planning permission as soon as possible, it is important to provide sufficient quality of information to maximise the likelihood of approval. The planning submission generally happens during stage 3 of the RIBA Plan of Work. In a typical project, about 30% of the architect’s fees are incurred up until and including this stage. More information on architects’ fees can be found in our article: Architects’ fees in the UK.

 

planning application costs: Islington house extension brick
Our rear extension in Islington with arched doors to the garden

Architecture for London is an RIBA Chartered Practice. Contact us on 020 3637 4236 to discuss your planning application costs or view our portfolio of recent residential projects.


Where can I find out more?

Planning application fees can change annually, so be sure to check the latest relevant information. For England and Wales, the current information is available on The Planning Portal. Further guidance and a useful planning fee calculator are available at the following pages:

 

Architect designed grade 2 listed house extension in Barnsbury, Islington
Our rear extension to a house in Barnsbury, Islington

Planning Application FAQs

How much does a planning application cost?


The cost of a planning application is £528 in England. This is the new cost for a householder application, and it applies from 2025 onwards.

How much does a lawful development certificate cost?


For a householder project, a lawful development certificate is £264. This is the cost from 2025 onwards.

How much does pre-application advice cost?


Costs can vary from borough to borough, and there are no statutory limits on the cost of pre-app advice.

How much does an appeal cost?


There is generally no cost for making an appeal, with the exception of enforcement appeals. However, parties to appeals are expected to meet their own consultant expenses.