Party Wall Case Study – Arkley
New Build Development, Arkley, North London.
This project involved the construction of a high-specification new-build detached residence in Arkley, North London.
Scope of Party Wall Involvement
The property spans three storeys and was constructed on a previously vacant plot adjacent to an existing residential building. The proposed development required significant excavation works, with new foundations and piling extending to a lower level than the neighbouring property’s footings.
The project required a detailed and proactive approach under the Party Wall etc. Act 1996 due to the nature of the works, including:
- Excavation for new piled foundations deeper than the existing neighbouring structures.
- Demolition of minor site obstructions close to the boundary.
- Construction of a full three-storey structure within 3 metres of an adjoining owner’s foundations.
Party Wall Procedures Initiated
In accordance with the Act, Section 6(1) notices were served to the adjoining owner to notify them of the proposed excavations within 3 metres and to a depth lower than their existing footings. Given the scale and complexity of the works, the adjoining owner appointed their own surveyor, and a party wall award was agreed and served prior to commencement.
Key documentation included:
- Detailed structural method statements.
- Sequencing of excavation and temporary works.
- Soil investigation reports.
- Full engineering drawings and piling layouts.
Excerpt from Project Plans
Technical Collaboration
A collaborative approach was essential due to the proximity of the neighbouring structure and the depth of the excavation. This included:
- Checking Engineer: A checking engineer was appointed to assess the structural method statements and foundation proposals.
- Architectural Coordination: Close communication with the architectural team ensured that the final structural scheme aligned with design aspirations while respecting neighbouring structures.
- Builder & Site Team Liaison: On-site meetings were held at key project stages.
- Planning Consultant Engagement: Ensured all proposed works complied with planning consents and local authority requirements.
Challenges & Resolutions
- Depth of Excavation: Temporary works plan and movement monitoring were incorporated into the award.
- Neighbour Concerns: Mitigated through independent engineer review and vibration monitoring.
- Access Constraints: Careful coordination of machinery and deliveries avoided encroachment.
Outcome
The project proceeded successfully with no damage or movement to the neighbouring property. The robust party wall process and early engagement with all stakeholders helped streamline the build and mitigate disputes. The completed residence now stands as a contemporary family home in a highly desirable area of North London.
