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Mixed use development, 1 & 2 Stephen Street, London

ORMS

The architect’s view

This mixed-use development comprising offices and retail space fronts Tottenham Court Road. Phases 1 and 2 of the office extension and refurbishment, scheduled to complete at the end of the 2013, involve transforming the ground floor on Stephen Street to create a new facade, new office entrance approach and double-height office studios. Existing TV studios, dressing rooms and ancillary space in 1 Stephen Street will be converted to form five studio units, some with mezzanines. The first floor of 1 Stephen Street as well as the reception, ground floor and levels 1-4 of 2 Stephen Street will be refurbished to Category A standard. In phase 3, due to start in 2014, the retail units on Tottenham Court Road will be extended by 70 per cent with a new double-height
frontage for the colonnade, with converted basement car parking.

  • John McRae, director, ORMS

Project data

Start on site November 2012
Contract duration 68 weeks
Gross internal area 11,372m²
Procurement Design and Build
Total cost £16 million
Cost per m² £1,409
Client Derwent London
Architect ORMS
Structural engineer/M&E Arup
Quantity surveyor Quantem Consulting
Specialist lighting consultant Pritchard Thermis
Project manager/CDM Jackson Coles
Main contractor Balfour Beatty
Approved building inspector BRCS
Estimated annual CO2 emissions 41.2kg/m²
Airtightness at 50 Pa 15m³/hr.m²
2 DEC rating 3 energy consumption EPC C
Estimated annual energy consumption 95.66kWh/m²
Estimated annual heating and hot water load 26.71kWh/m²
Estimated annual electrical base load 68.95kWh/m²
Estimated annual IT & small power 42.19kWh/m²
Summer thermal target for energy reduction 24 ± 2°C
Estimated annual mains water consumption 4.4m³/occupant

Specified products

Facade perforated metal cladding
Bespoke panels by Christian Pohl and OAG
Folded and rolled stainless-steel sheet, 3mm thick, grade 316, 4.8m high x 1.2m wide, shot peened finish


Canopy soffit cladding
Booth Muirie, Alucobond panels
BM120C soffit system and BM400 profiles
Fascia system, PVDF pure white high-gloss finish to 4mm thick alucobond; panels are 1.5m wide and vary in depth from 1.5m to 7.5m
www.boothmuirie.co.uk


Reception wall cladding
Ronchetti, black steel
Hot rolled mild steel sheet, 3mm thick on SHS sub-frame, sheet size 1.25m wide x 4.44m high, matt wax finish
www.marzoratironchetti.it


Office ceiling suspended metal rafts
Graepel, aluminium round N12 tiles
Perforated and folded ceiling tile in suspended metal grid system, with integrated lighting and services; natural aluminium finish
www.graepel.co.uk

 

 

 

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