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Do I need planning permission or building control approval for damp proofing of external walls?
Planning permission is unlikely to be required for the installation of external damp proofing unless the work will change the external appearance of the building or is part of a larger project.
If you live in a listed building you will need listed building consent for any significant changes, this can include external damp proofing. Additional rules may also apply if you live in a Conservation Area or other protected area.
Building regulations approval is not required for installing an external damp proof course (DPC).
Common Questions
Demolishing and building a new lean-to will still have comply with planning requirements.
If you live in a conservation area or listed building you may require approval for the demolition.
Whether a lean-to requires planning permission will depend on what the lean-to is used for, it may be an extension, pergola, carport, conservatory or gazebo.
In some cases a building a lean-to will be classified as permitted development, meaning an application for planning permission is not required provided specified limits and conditions are met. If these are exceeded, then you must apply for planning permission.
Permitted development rules vary based on the type of work you are completing, visit our interactive house mini guides for details on the specific rules.
If you live in a listed building, you will need listed building consent for any significant changes.
There are different planning fees for England and Wales, and many different application types depending on the work being carried out.
You can use the Planning Portal's fee calculator to work out fees for different kinds of proposal.
Use the fee calculator (England)
Use the fee calculator (Wales)
While every effort has been taken to ensure that the fee has been calculated correctly, the determination of whether a planning fee is correct is the responsibility of the relevant local planning authority, who will check the fee is correct when the application is submitted and validated.
If you want formal confirmation that the existing use of a building is lawful for planning purposes, or that your proposed development does not require planning permission, you can apply for a Lawful Development Certificate(LDC). An LDC can be useful in situations where you need assurance that a particular use, operation, or development is lawful under planning legislation.
Read more about Lawful Development Certificates.
Applications for a Lawful Development Certificate can be submitted online to your local council using Planning Portal. You must include enough detail and evidence to support your case; if the information is insufficient, your application may be refused.
Work that requires building control approval will require a completion notice to be submitted to the building control body. The completion notice must be sent within five days of the work being completed, once submitted, the building control body can visit the site to complete a final inspection.
If the work meets the required standards they will issue a completion certificate.
Foundations are required to carry and distribute the load of the building safely. Therefore, all buildings should have adequate foundations. The factors that need to be considered when designing a foundation are:
- Type of soil
- Adjacent structures
- Trees
- Drains and sewers
- Size and construction of the new building
- Ground condition
- Landfill sites
It is advisable to contact a structural engineer or speak to a building control body about plans for new foundations.
