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Teatum+Teatum transforms Sheffield iron foundry into a coworking space

London practice Teatum + Teatum have transformed Sheffield’s 18th-century Testone Factory into an office and coworking space for the city’s creatives.

Comms agency Peter and Paul tapped the practice, and its coliving sister-brand Noiascape, to oversee the adaptive reuse of the abandoned industrial building, a former iron foundry in the city’s Kelham Island Quarter. Around 50% of the colossal 400 sqm factory has been designated for Peter and Paul’s employees, while the other half has been turned into coworking space for small businesses, startups and freelancers.

The Testone Factory coworking space in Sheffield
Photography: Luke Hayes

Teatum + Teatum have given the factory a spruce while leaving concrete ceilings exposed. The giant floorplate has also been deftly divided, with the practice installing a timber-frame ‘box’ at the heart of the building. It will host events and screenings and be a ‘space for speculation’.

The east wing of the building has been carved into small studios with freshly polished concrete floors and simple white walls. Meanwhile, a kitchen, meeting room and a flexible gallery space for local artists (which opens onto the street) fill the west wing.

The Testone Factory coworking space in Sheffield
Photography: Luke Hayes

Says Tom and James Teatum: ‘Testone connects with the city locally at street level and as an idea. It shows how regeneration at a local level can contribute and be a positive catalyst for change.’

Read next: Inside London’s Mortimer House – a coworking club that blends hospitality and wellness



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