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.
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 Minerva House redevelopment works will include the partial demolition of the existing building and extension comprising of additional upper floors and a new lower ground floor.
Multistory (formerly 2 Colmore Square and Cannon House) is setting the new benchwork for Sustainability, targeting WiredScore Platinum, Fitwel 2 star and Energy Performance Certificate (EPC) of ‘B’.
The Grade II listed 21 St James’ Square building has been refurbished to offer 89,000ft² of high quality office accommodation, for which Watkins Payne supplied building services engineering, vertical transportation engineering, energy consultancy to achieve an BREEAM ‘Very Good’ and EPC B rating.
The exposed services strategy implemented at Fortess Grove compliments the industrial nature of the building. Cycling facilities are provided along with showers and lockers at ground floor level accessed directly from the rear of the building along Railey Mews. The development achieved a WiredScore certification of ‘Gold’ and a B rated Energy Performance Certification.