Commercial Change of Use Applications Explained

A commercial property may look suitable for a new business, but that does not automatically mean it can legally be used for the intended purpose.

Opening a takeaway in a former shop, converting an office into residential accommodation or turning a warehouse into a gym can all involve a change of use. Depending on the existing and proposed activities, the project may require full planning permission, prior approval or no planning application at all.

The rules can be difficult to interpret, particularly when several business types appear to have similar uses. Checking the planning position early can prevent a business owner or developer from committing to unsuitable premises.

What is a commercial change of use?

A commercial change of use happens when a building or piece of land begins to be used for a materially different purpose.

In England, many property uses are grouped into planning use classes. These categories help local authorities decide whether changing from one activity to another requires permission.

A change of use does not always involve building work. The physical premises may remain the same while the way they are used changes considerably.

For example, changing a retail shop into a hot food takeaway may require permission because the new use could introduce additional noise, smells, deliveries and later opening hours.

The planning authority will consider the actual operation of the business, not simply the name given to it.

What are commercial use classes?

Use classes group similar types of activity together.

Class E, known as Commercial, Business and Service, covers a broad range of uses. These can include:

• shops
• offices
• cafés and restaurants
• financial and professional services
• gyms
• medical services
• some indoor recreation activities

Moving between qualifying activities within Class E may not require full planning permission. However, property owners should not assume every commercial activity falls within this category.

Some uses are described as sui generis, which means they sit within a class of their own. These can include:

• hot food takeaways
• pubs
• nightclubs
• petrol stations
• betting shops
• certain entertainment venues

Changing to or from a sui generis use will often require planning permission unless a specific permitted development right applies.

Does every change of use require planning permission?

No. The correct route will depend on the existing use, the proposed activity and any restrictions affecting the property.A commercial change may fall into one of four broad categories:

• the new activity remains within the existing use class
• permitted development rights allow the change
• prior approval is required
• full planning permission is required

A move within the same use class may not require an application. However, previous planning conditions, legal agreements or local restrictions may still limit what is allowed.

Permitted development rights can also allow certain changes without a full application, but these rights are subject to specific conditions.

The planning history of the property should therefore be checked before a lease is signed or significant design work begins.

What is prior approval?

Prior approval is a planning process linked to certain permitted development rights.

It is not the same as full planning permission, but the local authority must still assess specific parts of the proposal before the change can proceed.

Depending on the type of conversion, the council may consider:

• transport and highways
• noise
• flood risk
• contamination
• natural light
• fire safety
• the effect of surrounding commercial activity

Commercial-to-residential conversions are a common example. Some properties may be eligible to change to residential use through permitted development, but prior approval may still be needed.

An Article 4 direction can also remove permitted development rights in a particular area. Where this applies, a full planning application may be required instead.

When is full planning permission likely to be needed?

Full planning permission is more likely when the proposed activity falls into a different use class or creates significantly different effects.

Examples may include:

• turning a shop into a takeaway
• converting a residential property into commercial premises
• introducing late-night opening
• creating a business that generates more traffic
• changing a commercial unit into an entertainment venue
• moving to or from a sui generis use
• completing a conversion where permitted development rights have been removed

Permission may also be required for physical alterations connected to the new use.

A business might be acceptable in principle but still require consent for:

• a new shopfront
• extraction equipment
• external plant
• signage
• access alterations
• an extension

The change of use and the proposed building work should therefore be considered together.

What will the council consider?

The local planning authority will assess how the new use fits with planning policy and how it may affect the surrounding area.

Noise and disturbance

A restaurant, office and retail unit may occupy similar premises, but they can create very different levels of activity.

Planning officers may consider customer noise, music, deliveries, machinery, extraction equipment and operating hours.

Where homes are nearby, the applicant may need to explain how noise will be controlled.

Parking and traffic

A new business may attract more customers, staff or deliveries than the previous occupier.

The authority may assess whether:

• there is enough parking
• the site can be accessed safely
• deliveries can take place without disruption
• the surrounding roads can accommodate additional traffic

A transport or parking statement may be needed for some projects.

Odour and extraction

Cafés, restaurants and takeaways often require ventilation and extraction systems.

The position of this equipment can affect neighbouring properties and the appearance of the building. A poorly designed system may cause noise, smells or visual concerns.

Extraction should be considered during the initial design rather than after the internal layout has been completed.

Appearance and local character

External changes may need to respect the building and its surroundings.

This can be particularly important for:

• high-street premises
• listed buildings
• conservation areas
• prominent corner units
• historic commercial buildings

Shopfronts, lighting, shutters, signs and external equipment may all need to form part of the application.

Why should the use be checked before signing a lease?

One of the biggest mistakes a business can make is committing to premises before confirming that the intended activity is lawful.

A property may be described as commercial, but that does not mean every type of business can operate from it.

Before buying or leasing a unit, the occupier should establish:

• the lawful existing use
• the relevant use class
• whether the proposed activity fits within that class
• whether previous planning conditions apply
• whether permitted development rights are available
• whether physical alterations need consent
• whether there is a realistic chance of approval

A lease may also need to make occupation conditional on planning permission being granted. Legal advice should be obtained before entering into any agreement.

What information may be required?

The documents needed will depend on the proposal and the local authority.

A commercial change of use application may include:

• a location plan
• existing and proposed floor plans
• existing and proposed elevations
• a planning statement
• a design and access statement
• proposed opening hours
• parking and delivery information
• extraction details
• noise or odour assessments
• waste storage arrangements

Clear architectural drawings help the council understand how the building will operate after the change.

Businesses looking for commercial architects in Northampton can benefit from early design and planning support. An architectural team can review the property, investigate relevant planning policies and prepare the drawings needed to communicate the proposal clearly.

Is architectural design important if the outside is not changing?

Yes. A change of use is not only a planning exercise.The internal layout must support the practical needs of the business while also meeting relevant technical and safety requirements.

A commercial design may need to consider:

• customer and staff movement
• accessibility
• fire escape routes
• toilets
• storage
• kitchen or service areas
• deliveries
• waste management
• ventilation
• security

Early drawings can reveal whether the premises are genuinely suitable before money is spent on equipment and fitting-out work.

A unit may appear large enough at first, but the usable space can reduce once circulation, accessible facilities, storage and technical equipment are included.

Does planning permission cover building regulations?

No. Planning permission and building regulations are separate.

Planning considers whether the new use and any associated development are acceptable. Building regulations deal with matters such as:

• structural safety
• fire protection
• accessibility
• ventilation
• drainage
• energy performance
• sanitation

A change of use can trigger building regulations requirements even where little physical work is proposed.

Other permissions may also be required. Depending on the building and business, these could include:

• listed building consent
• advertisement consent
• premises licences
• landlord approval
• environmental health approval

Receiving planning permission does not mean every other legal requirement has been satisfied.

How long does a change of use application take?

Timescales depend on the application route, the complexity of the proposal and the local authority.

Time may also be needed before submission for:

• measured surveys
• architectural drawings
• planning research
• specialist reports
• design revisions
• consultant input

If further information is requested after submission, the process can take longer.

Businesses should include planning time within their property and launch programme. Agreeing an opening date before the planning route has been confirmed can create unnecessary pressure.

“The suitability of commercial premises should be investigated before a client commits heavily to the property. A unit may appear right in terms of location and size, but its lawful use, planning history and effect on nearby properties can significantly change what is achievable.” – Amico Design’s architectural team

Frequently asked questions

Can a shop be changed into an office?

A shop and office may both fall within Class E, meaning full planning permission may not be required. However, planning conditions and local restrictions should still be checked.

Does changing the business always count as a change of use?

No. Different businesses can sometimes operate within the same use class. However, a change may still be material if the new activity creates different effects through noise, traffic, opening hours or deliveries.

Can work begin before permission is granted?

Starting work before the correct permission is secured creates a risk. The application may be refused or approved subject to changes that affect the proposed layout.

Can commercial property be converted into flats?

Some commercial-to-residential conversions may be possible through permitted development and prior approval. Others require full planning permission. The existing use, location and local planning restrictions will affect the route.

What happens if a property is used without permission?

The local authority may investigate and take planning enforcement action. Applying retrospectively does not guarantee that permission will be granted.

Check the planning position before committing

Commercial change of use applications can appear simple, particularly when the building is already used for business purposes. In practice, the existing use, proposed activity, planning history and surrounding area must all be considered.

Early investigation can establish whether the new use is already permitted, whether prior approval is available or whether a full planning application will be required.

Bringing architectural design and planning strategy together from the beginning gives business owners and developers a clearer understanding of what can realistically be achieved before significant money is committed.