Queen's Park

Carlisle Road, Queen’s Park

Cambell Brown Engineers was appointed to deliver the full permanent structural design and all associated temporary works for a high-end private residential redevelopment in Queen’s Park, London. The project combined significant below-ground construction with complex alterations to the existing property, requiring careful engineering to ensure stability, safety, and long-term performance.

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Scope of Works

• A new 4‑metre-deep basement constructed both beneath and beyond the footprint of the existing house.
• A contemporary roof extension adding valuable living space.
• A feature staircase integrating the new and existing structural elements.
• An external garden studio with independent foundations.

To form the basement, Cambell Brown Engineers designed:

• Reinforced concrete underpins beneath the existing party walls and external walls.
• A contiguous piled wall beyond the existing building line to support the extended basement area.

In addition to the permanent works, the team designed all temporary works, including:

• Temporary propping systems to stabilise the structure during excavation and construction.
• A full underpinning sequence enabling safe formation of the basement.
• Temporary vertical propping allowing simultaneous excavation of the basement and works to the superstructure, improving programme efficiency.

The project successfully delivered a large, high‑quality basement and upgraded superstructure while preserving the integrity of the existing home. The integration of the new roof extension, staircase, and external studio provides the client with a modern and functional living environment. The coordinated temporary works strategy ensured efficient progress without compromising safety or structural performance.