
5-7 Carnaby Street, Soho London
This project is a mixed use office and retail scheme which consists of a new double height roof extension and new Green Wall on Carnaby Street located in the heart of London’s Soho.

The 90 Long Acre redevelopment scheme consists of a major refurbishment and extension of the existing 1980s building. The development is an 8 storey building comprising 20,988m² (NIA) of office area and 1,903m² of retail (A1,D1,D2 and SG) area located on lower ground – and upper ground floors.
The office HVAC consisting of a mixed-mode design with openable façade elements allowing for natural ventilation and cooling when available to the perimeter zones. Hot water for space heating is provided by air source heat pumps and chilled water for cooling is generated via air cooled chillers. Multi function heat recovery air source heat pumps are utilised during simultaneous heating and cooling conditions for high efficiency operation.

This project is a mixed use office and retail scheme which consists of a new double height roof extension and new Green Wall on Carnaby Street located in the heart of London’s Soho.

This prestigious development is focused on delivering best-in-class workplace standards while achieving high levels of sustainability, occupant wellbeing and energy efficiency.

Exposed services has been adopted for the office floor provided new LED linear lighting, ducted fan coil units and power distributed within the office floors.

The building at 1 New Burlington Place has been redeveloped to offer 183,000ft² of high quality office and retail accommodation, for which Watkins Payne supplied building services engineering, vertical transportation engineering and energy consultancy to achieve an EPC A rating. We also supplied BREEAM services and achieved a BREEAM Excellent rating for the development.

The speculative office space is fitted out to a Category A standard and will be British Council of Offices (BCO) Guide to Specification 2019 compliant. The refurbishment has adjusted the temperature control zones to pull them better in line with the BCO recommendations than currently provided.

The building services use a 4-pipe fan coil unit arrangement with various ventilation systems to suit the different use areas. Full building power back-up standby generation, UPS, security and access control and automatic blinds all formed part of the fit-out.