Understanding the Minimum Gap Between Neighbours' Extensions

When planning an extension or any new building work, it is important to be aware of the relevant regulations, particularly regarding the proximity of your extension to your neighbour’s property. While there is generally no mandated minimum gap between properties, certain legal requirements and considerations may apply, some of which are outlined below:

Legal Requirements and Building Regulations

Building regulations and local council guidelines ensure that extensions meet standards for access, privacy, and safety. However, in most cases, you are permitted to build up to the boundary line. It is advisable to consult your local authority’s planning portal or speak with a planning officer for specific guidance related to your property and proposed works.

Importance of the Party Wall Act 1996

If your extension is near or on the boundary with your neighbour’s property, the Party Wall Act 1996 may apply. Under this legislation, you may be required to serve a Party Wall Notice to your neighbours, seeking their consent before beginning construction. Consulting a party wall surveyor can help you navigate this process and address any issues that may arise.

Considerations for Extensions

Although there is no fixed requirement for a minimum gap between properties, some practical factors should be considered. For example:

  • Building close to the boundary may affect access for future maintenance
  • Multi-storey extensions could have a greater impact on neighbouring properties
  • Planning officers may suggest a gap to maintain light and privacy standards

Considering Light and Privacy

Extensions that are built up to the boundary could affect the amount of natural light reaching neighbouring properties, or lead to privacy concerns, particularly if new windows or balconies are involved. These issues can often be mitigated through careful planning and design, such as strategic window placement or the use of obscure glazing.

Why Professional Guidance is Key

While there is no general requirement for a minimum gap between extensions and neighbouring properties, it is essential to approach your project with care to avoid potential disputes. Seeking advice from a chartered surveyor can ensure compliance with relevant regulations, including the Party Wall Act, and help avoid unnecessary delays or complications.

Our team specialises in providing expert guidance with regard to such statutory matters, ensuring that all legal and regulatory requirements are met, while maintaining positive relations with neighbouring property owners. Contact us for further advice on how we can assist with your project.

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