Stiff + Trevillion London

Batlleiroig is one of the strongest Barcelona-area practices for companies thinking beyond a single office floorplate toward campuses, mixed-use business environments, and sustainability-led workplaces. The firm combines architecture, landscape, and urban thinking, which makes it particularly well suited to headquarters, office buildings, and large corporate environments with public-realm and ESG ambitions.

GCA Architects combines architecture and interior design with a particularly polished commercial aesthetic, making it a strong option for premium headquarters, investor-facing workplaces, and offices where material quality and brand perception matter. The Barcelona firm’s portfolio also suggests comfort operating across complex projects that blend workplace, hospitality, and high-end client experience.

b720 brings a broader architectural lens to workplace design, with experience in office buildings and headquarters that need to perform both internally and in the city around them. For clients planning a flagship workplace or a complex office asset, the Barcelona studio stands out for integrating façade, structure, public interface, and interior experience into a more cohesive whole.