THE BUNKABIN GUIDE TO CONSTRUCTION SITE PLANNING PERMISSION

Before construction work begins, it is important to understand whether planning permission is needed, what approvals may apply and what conditions must be met before work can lawfully start. Construction site planning permission can affect the main development itself, as well as temporary site cabins, welfare facilities, site access, hoardings and other structures used while the project is underway.

The planning process can be complex because every site is different. Requirements may depend on the type of proposed development, the location of the land, whether permitted development rights apply, whether the site is in a conservation area or close to a listed building, and whether the local planning authority has attached conditions to the planning consent.

If the right permission or approval is not in place, the project may face delays, enforcement action, additional costs or changes to the site setup. This is why construction site planning permission should be considered early, alongside practical matters such as welfare facilities, access, utilities and temporary accommodation.

In this guide, the temporary building hire specialists at Bunkabin explain when planning permission may be needed for a construction site, how planning permission differs from building regulations approval, and how temporary site cabins and welfare units fit into the planning process.

WHEN IS PLANNING PERMISSION NEEDED FOR A CONSTRUCTION SITE?

Planning permission is commonly needed where construction work involves a new building, a major alteration to an existing building, a material change of use, or development that affects the appearance, use or impact of land or property.

Planning permission may also be relevant to the construction site setup itself. For example, temporary buildings, welfare facilities, site offices, sleeper units, hoardings or access changes may need to be considered if they are substantial, long-term, visible from neighbouring properties or located in a sensitive area.

Planning permission may be more likely to be needed where:

• The proposed development involves a new building or major extension
• The use of the land or property is changing
• Temporary buildings will remain on site for a long period
• The site is in or near a conservation area
• The works affect a listed building or its setting
• The project may affect neighbouring properties
• Site access, traffic or parking arrangements are changing
• Large hoardings, signage or advertising will be installed
• Permitted development rights are restricted or do not apply
• The local planning authority has attached conditions to the existing planning consent

Because the rules depend on the specific project, contractors should check the planning position before beginning work or installing temporary site facilities.

WHO DECIDES WHETHER PLANNING PERMISSION IS NEEDED?

Planning permission is normally handled by the local planning authority, which is usually the planning department of the local council. The local planning authority assesses planning applications and decides whether the proposed development is acceptable.

The local planning authority may consider issues such as:

• The use of the land or building
• The size, scale and design of the proposed development
• Access and highway safety
• Parking and traffic impacts
• Noise, dust and disturbance
• Effects on neighbouring properties
• Visual impact
• Impact on listed buildings or conservation areas
• Environmental considerations
• Local planning policy
• National planning guidance

If you are unsure whether planning permission is needed, the local planning authority is usually the first place to check, and can be found through this planning portal.

PLANNING PERMISSION VS BUILDING REGULATIONS APPROVAL

Planning permission and building regulations approval are separate. A construction project may need one, both or neither, depending on the nature of the work.

Planning permission deals with whether the proposed development is acceptable in planning terms. It looks at issues such as land use, design, scale, access, local impact and how the development fits with planning policy.

Building regulations approval deals with how building work is designed and constructed. Building regulations are concerned with safety standards, health, accessibility, energy performance, structure, fire safety, ventilation, drainage and other technical requirements.

For example, a project may receive planning permission from the local planning authority but still need building regulations approval through building control before or during the work. Equally, some types of building work may not require planning permission but may still need to meet building regulations.

In construction site planning, planning consent does not automatically mean all building control requirements have been satisfied, and building regulations approval does not replace planning permission where planning consent is needed.

WHAT ARE PERMITTED DEVELOPMENT RIGHTS?

Permitted development rights allow certain types of building work or changes of use to take place without a full planning application, provided the proposed development meets specific rules and restrictions.

For construction projects, permitted development rights may be relevant to some temporary buildings, moveable structures or site works that are needed to support development. However, these rights are not unlimited. They may depend on the type of land, the purpose of the temporary structure, how long it will remain in place, where it is located and whether any restrictions apply.

Permitted development rights may be limited or unavailable where:

• The property is listed
• The site is in a conservation area
• The land is subject to planning restrictions
• Previous planning conditions removed or limited development rights
• The proposed project exceeds permitted development limits
• Prior approval or prior notification is required
• The development could affect neighbouring properties, access or the local environment

If a project relies on permitted development rights, it is important to check the rules carefully before work begins. In some cases, a lawful development certificate may be useful to confirm that the development is legally compliant.

WHAT ARE PRIOR APPROVAL AND PRIOR NOTIFICATION?

Some forms of permitted development still require the local planning authority to be notified before work begins. This is often referred to as prior notification or prior approval.

Prior notification usually means the local planning authority must be told about the proposed development before it starts. Prior approval means the authority must consider certain impacts before the development can proceed under permitted development rights.

The matters assessed through prior approval will depend on the type of development. They may include issues such as transport, access, design, flooding, noise, contamination, neighbouring properties or impact on the surrounding area.

This is one reason why permitted development should not be treated as automatic permission to begin work. Even where a full planning application is not needed, there may still be a formal process to follow before the proposed project can start.

WHAT INFORMATION IS NEEDED FOR A PLANNING APPLICATION?

A planning application usually needs enough detailed information for the local planning authority to assess the proposed development. The exact requirements will depend on the project, but most applications will need a location plan and a site plan.

A location plan shows the application site in its wider context, including nearby roads, buildings and land. A site plan, sometimes called a block plan, shows the proposed development in more detail, including the site boundary, existing buildings, proposed buildings, access points and surrounding features.

Depending on the project, a planning application may also need:

• A completed application form
• Ownership certificates
• A design and access statement, where required
• Existing and proposed drawings
• Elevation plans
• Floor plans
• Drainage information
• Ecology or tree reports
• Heritage information for listed buildings or conservation areas
• Transport or access details
• Construction management information
• Noise, dust or environmental assessments
• Details of temporary buildings, site facilities or welfare accommodation where relevant

Applications are commonly submitted online through the planning portal. Once submitted, the local planning authority will check whether the application is valid. If further information is needed, the planning process may be delayed until the missing information is provided.

HOW DOES THE PLANNING APPLICATION PROCESS WORK?

The planning process will vary depending on the project, but most applications follow a similar route.

A typical process may include:

• Checking whether planning permission is needed
• Preparing drawings, plans and supporting information
• Submitting the planning application
• Validation by the local planning authority
• Public consultation or neighbour notification where required
• Review by planning officers and consultees
• Assessment against local and national planning policy
• A decision to approve, approve with conditions, or refuse the application
• Discharge of any conditions before work begins where required

Some applications are straightforward, while others may take longer if the proposed development is complex, controversial or missing information. The local planning authority may request further information during the process, especially where there are potential impacts on neighbouring properties, highways, drainage, heritage, ecology or the local environment.

WHAT CONSTITUTES STARTING WORK FOR PLANNING PERMISSION?

Starting work is not always the same as preparing the site. In planning terms, commencement usually involves carrying out a material operation that forms part of the approved development. This may include certain building, engineering or construction works such as:

• Beginning foundations
• Digging foundation trenches
• Laying underground services
• Constructing part of a building
• Carrying out engineering operations
• Creating access works where these form part of the approved development

However, some early activities may not be enough on their own. Bringing equipment to site, placing temporary cabins, installing fencing, setting up welfare facilities or clearing minor vegetation may support the construction process, but may not necessarily count as lawfully commencing the approved development.

The position will depend on the planning permission, the approved plans and any pre-commencement conditions. Developers and contractors should check the decision notice before assuming that work has legally begun.

DO TEMPORARY SITE CABINS NEED PLANNING PERMISSION?

Temporary site cabins may need planning permission, depending on the site, the use of the cabins, how long they will remain in place and whether permitted development rights apply.

Site cabins are commonly used for offices, welfare accommodation, toilets, showers, canteens, drying rooms, changing areas and sleeper units. These facilities can be essential to the safe and efficient running of a construction project, but their temporary nature does not automatically mean planning permission is unnecessary.

Planning permission may be more likely to be needed where:

• The cabins will remain on site for a long period
• The cabins are large or visually prominent
• The site is in a conservation area or sensitive location
• The cabins are close to neighbouring properties
• The cabins will be used for overnight accommodation
• The units affect access, parking or traffic movements
• Permitted development rights are restricted or removed
• Planning conditions control temporary buildings or site layout

Where temporary cabins are required only for the construction phase and are directly connected to approved work, the planning position may be more straightforward. Even so, contractors should check the requirements before installation, especially on longer projects or restricted sites.

WHAT PLANNING CONSIDERATIONS APPLY TO CONSTRUCTION SITE WELFARE FACILITIES?

Construction site welfare facilities should be planned as part of the wider site setup. Welfare facilities may include toilets, washing facilities, showers, changing rooms, drying areas, rest facilities, canteens, diners and sleeper units.

From a planning perspective, the key question is not only whether the facilities are needed, but how they will be installed, used and removed. The local planning authority may consider the impact of temporary welfare units on the site and surrounding area.

Planning considerations may include:

• The number of welfare units required
• Where the units will be positioned
• How long they will remain on site
• Whether workers will sleep on site
• Whether the units are visible from public areas
• Whether they affect neighbouring properties
• How water, drainage and power will be provided
• Whether delivery vehicles can access the site safely
• Whether the units affect parking or traffic movements
• How waste and servicing will be managed
• Whether planning conditions restrict temporary buildings

Bunkabin supplies portable welfare facilities including site sleepers, toilet blocks, shower blocks and diners. These can support construction projects where workers need practical facilities on site, but contractors should check the planning position for the specific project and location.

WHAT PLANNING CONSIDERATIONS APPLY TO TEMPORARY SITE ACCOMMODATION?

Temporary site accommodation reduces travel time, supports remote projects and gives workers access to suitable facilities close to the working area. These units can be particularly useful for large construction projects, infrastructure works, agricultural businesses and sites where hotel accommodation or daily commuting is impractical. At Bunkabin, we supply cabins across countless industries.

However, temporary accommodation can raise additional planning considerations, especially where workers will stay overnight. You may need to factor in:

• The purpose of the accommodation
• The number of workers staying on site
• The duration of the accommodation
• Access for delivery and emergency vehicles
• Parking and vehicle movements
• Noise and lighting
• Impact on neighbouring properties
• Visual impact and screening
• Water supply, drainage and waste management
• Site security
• Removal of the units after the project ends

For shorter projects, temporary welfare facilities may be relatively straightforward. For larger or longer projects, especially those involving sleeper units, planning checks should be factored in early. Read more on this in our guide to getting planning permission for temporary buildings.

WHAT HAPPENS IF CONSTRUCTION STARTS WITHOUT THE RIGHT PERMISSION?

Starting construction work without the correct planning permission can create serious problems. The local planning authority may investigate and, where appropriate, take enforcement action. You could face:

• Delays to the project
• A requirement to submit a retrospective planning application
• Restrictions on further work
• Changes to the site layout
• Removal of unauthorised structures
• Additional professional costs
• Programme disruption
• Reputational issues with clients, neighbours or regulators

In some cases, planning issues can affect funding, contracts, handover dates or the sale of a completed development. This is why planning permission, building regulations approval and pre-commencement conditions should be checked before work begins.

WHAT HAPPENS IF PLANNING PERMISSION IS REFUSED?

If planning permission is refused, the local planning authority should explain the reasons for refusal. You can then decide whether to amend the proposal, submit a revised application or appeal the decision where appropriate.

Reasons for refusal may relate to issues such as:

• Design or scale
• Impact on neighbouring properties
• Highway safety
• Parking or access
• Environmental impact
• Heritage impact
• Flood risk
• Noise or disturbance
• Conflict with local planning policy
• Insufficient supporting information

A refusal does not always mean the project cannot proceed in any form. In some cases, a revised planning application can address the local authority’s concerns. In others, an appeal may be considered. Should you encounter these issues, Bunkabin recommends seeking advice from a planning consultant to determine the best next steps.

HOW LONG DOES CONSTRUCTION SITE PLANNING PERMISSION LAST?

Planning permission is usually granted for a fixed period. In many cases, development must begin within three years of the date permission is granted, unless the decision notice states a different time limit.

If the development does not lawfully begin before the deadline, the planning permission may expire and a new planning application may be needed, which will likely cause delays and create additional costs.

HOW TO PLAN SITE FACILITIES BEFORE WORK STARTS

Before installing temporary site cabins, welfare units or accommodation, contractors should review both the operational needs of the site and the planning position.

A practical pre-start checklist should include:

• Reviewing the planning permission and decision notice
• Checking whether pre-commencement conditions apply
• Confirming whether conditions have been discharged
• Checking whether temporary buildings are covered by the permission
• Asking the local planning authority if the position is unclear
• Reviewing permitted development rights
• Considering whether prior approval or prior notification is required
• Planning safe access for delivery vehicles
• Choosing suitable locations for cabins and welfare units
• Checking availability of water, drainage and power
• Considering impact on neighbouring properties
• Planning how units will be serviced and maintained
• Confirming when temporary facilities will be removed

Want to know more? Read about the legal requirements of installing temporary welfare and accommodation units on a construction site.

SPEAK TO BUNKABIN ABOUT TEMPORARY CONSTRUCTION SITE ACCOMMODATION

If you are planning a construction project and need temporary site accommodation or welfare facilities, Bunkabin can help you choose the right units for your workforce, site layout and project timescales.

Our team can discuss your project, delivery access, welfare needs and timescales, then recommend suitable site sleepers, toilet blocks, shower blocks, diners or other portable facilities.

For more information, call Bunkabin on 0345 456 7899 or complete our online enquiry form to request a quote.