Adjacent Excavation Notices

April 4, 2024In Party Wall Advice
April 4, 2024|In Party Wall Advice

Embarking on construction projects that involve excavation near adjoining structures demands a thorough understanding of the Party Wall etc. Act 1996. In this comprehensive guide, we delve into the intricacies of Adjacent Excavation Notices, an essential component of the Act. From the scope of notice requirements to the potential for disputes and the involvement of party wall surveyors, this guide aims to provide property owners and builders with a comprehensive roadmap for navigating excavation projects near neighbouring properties.

The Significance of Adjacent Excavation Notices:

  1. Definition and Scope:

Adjacent Excavation Notices become crucial when planning excavation works within 3 metres of an adjoining structure or property and to a depth deeper than its foundations, or within 6 metres in the case of piled foundations. These Notices serve as formal communication to the affected property owner, outlining the proposed excavation activities and seeking their consent or dissent.

  1. Drawing Requirements:

The Notice must include detailed drawings illustrating the proposed depth of the excavations and their layout. Failure to provide such drawings can invalidate the Notice, emphasising the importance of meticulous planning and communication.

  1. Safeguarding Measures:

Ideally, the Notice should specify whether the excavation intends to underpin or otherwise safeguard the adjoining owner’s structure. This transparency is essential for fostering understanding and collaboration between the parties involved.

Works Requiring Adjacent Excavation Notices:

  1. Scope of Excavation:

Excavation projects covered by Adjacent Excavation Notices include any digging or disturbance of soil within the specified proximity of neighbouring structures. Understanding the specific requirements that trigger the need for notices is crucial for compliance.

  1. Professional Guidance:

If uncertainties arise regarding the need for Adjacent Excavation Notices, seeking professional advice is recommended. Expert guidance ensures compliance with the Act and minimises the risk of legal complications.

III.        Serving Adjacent Excavation Notices:

  1. Timelines and Procedures:

Adjacent Excavation Notices must be served at least one month before the proposed excavations commence. This lead time allows neighbouring property owners ample opportunity to review the plans and respond accordingly.

  1. Neighbour’s Response:

Once the Notice is served, neighbours have 14 days to respond, either consenting or dissenting. Non-response within this period is deemed as automatic dissent, triggering the need for further resolution through party wall surveyors.


  1. Implications of Dissent:

In cases of dissent, party wall surveyors must be appointed to settle the matter through a party wall award. This award not only resolves disputes but also determines whether underpinning or safeguarding measures are necessary to protect the adjoining owner’s property.

Party Wall Awards and Dispute Resolution:

  1. Role of Surveyors:

Party wall surveyors, appointed in cases of dissent, act as impartial mediators. Their expertise is essential in preparing a comprehensive party wall award that addresses the issues in dispute and outlines the conditions for excavation works.

  1. Content of Party Wall Award:

The party wall award serves as a legally binding agreement, specifying when and how the excavation works are to be undertaken. It provides a clear roadmap for both parties, ensuring a structured and regulated construction process.

  1. Collaborative Approach:

Encouraging a collaborative approach between property owners and appointed surveyors can lead to more efficient and amicable dispute resolution. Open communication is key to fostering understanding and resolving issues.

Practical Considerations and Best Practices:

  1. Open Communication:

Transparent and open communication between property owners and neighbours is crucial for a smooth process. Early communication can prevent misunderstandings and disputes.

  1. Professional Guidance:

Seeking professional advice, especially from experienced surveyors, ensures adherence to the Act and a more streamlined excavation process. Their guidance is invaluable in navigating the complexities of Adjacent Excavation Notices.

  1. Documentation:

Thorough documentation of the entire process, including Notices, responses, and agreements, is essential for future reference and legal compliance.


Mastering the Party Wall Process, particularly when dealing with Adjacent Excavation Notices, demands meticulous planning, effective communication, and a collaborative approach. By following this comprehensive guide, property owners and builders can approach excavation projects near adjoining structures with confidence, ensuring compliance with legal frameworks and fostering positive relationships with neighbours.

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