Building Safety Act – Gateway Submissions

Westminster Tower

Cass Allen worked closely with the developers London Square and the architects ACA Studios to provide the full acoustics detailed design of the Westminster tower development through RIBA Stages 3 and 4, with works currently in RIBA Stage 5. The development is comprised of thirty residential units and a first floor working space totalling 17 floors in the heart of London.

With the height of the building pushing the tower into the ‘Higher Risk Building’ category, this triggered the inclusion of the development in the Gateway 2 process. For Cass Allen this involved a thorough evaluation and assessment of the detailed design against the Part E requirements and acoustic related elements of Part O. The Part E compliance chapter was broken down into the component E1 to E3 requirements providing robust assessment of the separating walls and floors of the development between the penthouses, apartments, and communal areas of the development, internal partitions within apartments, junctions details, penetrations, and reverberation treatment for common corridors.

North Street Regeneration, Guildford

Client: St Edward, Berkeley Group

Cass Allen are providing the detailed acoustic design for this landmark regeneration of Guildford’s town centre, building on our longstanding relationship with St Edward and the wider Berkeley Group.

The development includes a mix of traditional concrete and modern steel framing construction methods, and our work enables the delivery of almost 500 new homes with supporting amenities while integrating alongside existing businesses, nightlife, and a new bus station.

This project also reflects our leading position in supporting our clients through the Gateway 2 submission process for the Building Safety Act, where the first phases now have full approval. Cass Allen uses experience of over thirty ongoing applications plus nearly 15 full approvals to maximise our clients’ chances of a successful, efficient process.