GSK Head Office, İstanbul
Office Lighting Project: Human-Centred Design, Completed, 2023
Architectural Team: Under Architects
Client: GSK
Rooted in Human-Centric Lighting (HCL), the GSK Istanbul office design focuses on the biological and emotional well-being of its occupants. Long-term meteorological data shows that Istanbul averages only 84 sunny days a year, meaning natural light rarely reaches deep into open-plan office layouts. Our vision was to turn artificial lighting into the ultimate replicator of daylight, effectively bringing the sky indoors.
Reflecting a truly user-centric approach, the peak color temperature was refined from 6500K to 5000K based on direct employee feedback, resulting in a living design that evolves with its users.
A dynamic Tunable White system shifts from a warm 2700K in the morning to a 5000K peak at midday, tapering back to 2700K by evening.
Delivers 1000 lux on task surfaces and 200 lux in circulation areas, maintaining UGR < 19 and CRI ≥ 90.
Custom-designed indirect acoustic ceiling luminaires provide uniform glare-free distribution while improving office acoustics.
Photo Credit: Başak Okay & Şeyma Kılıç









