Underpinning is a crucial process in construction and renovation projects typically undertaken by experienced underpinning contractors to stabilise a structure that has suffered foundation deterioration or subsidence. It can also be necessary if you plan to build another storey either above or below ground level, to ensure the depth of the existing foundations are suitable. Understanding the associated underpinning building regulations can be daunting for many homeowners and contractors, so here we’ll answer key questions and provide clarity on obtaining approvals and permissions.
Do I Need Building Regulations Approval For Underpinning?
Yes, you will need building regulations approval for underpinning work. Underpinning is considered a structural alteration and therefore falls under the purview of building regulations. Compliance with these regulations is essential to ensure the structural integrity and safety of the building.
If the foundation is in close proximity to another building, you may also need to comply with the Party Wall etc. Act 1996.
How To Get Underpinning Building Regulations Approval?
Before starting any underpinning work, you will need to contact a ‘building control body’ (BCB) to check the regulations, submit a plan, and apply for approval. They may need to assess the condition of the existing foundation or conduct site inspections throughout the process. Upon successful completion of the work, the BCB will also provide you with a completion certificate verifying the work has been carried out in accordance with underpinning building regulations.
Building control bodies can either be:
- The building control department of the Local Authority – apply to your council for approval
- A Private BCB – a private approved inspector, who will notify your local authority on your behalf
Types of Building Regulation Applications for Underpinning
There are three types of application in regards to underpinning building regulations:
- Full Plans Application – This is the most thorough option and is required if you are having underpinning work carried out. Copies of the plans must also be submitted to allow inspectors to check if they comply with building regulations.
- Building Notice Application– This is required for smaller projects and may only be used for domestic dwellings. This application is submitted without plans, and you can start work much sooner than through a full plans application.
- Regularisation – This is a retrospective application used to get approval for work that has already been started or carried out without consent, and can only be applied for by a local authority BCB.
Do You Need Planning Permission For Underpinning?
No, underpinning usually doesn’t require planning permission, as it involves work within the existing footprint of the building. However, there may be exceptions if your property is located in a conservation area, or is a listed building – so make sure to check with your local planning authority before carrying out any work.
Getting Further Assistance
Understanding and complying with building regulations is essential for ensuring the safety and structural integrity of your property. Remember to consult with experienced professionals, obtain necessary approvals, and adhere to regulations throughout the entire process.
Here at Dart & Co Foundations, our experts can assist in any stage from assessment to carrying out groundwork solutions. If you’d like to talk to a member of our team for advice or to receive a quote, don’t hesitate to get in touch.