Winner: Sustainable interior of the year. Tengbom has designed the interiors for its own office in Stockholm, Sweden.

Tengbom's Stockholm office was relocated from a modernist inner city building to a factory building in 1934.

Committed to sustainability and constrained by a limited budget, the objective was to enhance the qualities of the new office space and achieve a design that prioritises inclusiveness, co-creativity and wellbeing by making the most of the resources already available.

Repurposed interior elements and furniture, natural colours and materials and biophilia have been utilised to create a sustainable interior that stimulates the senses and celebrates the imperfect.

"The aim is for a workplace atmosphere of shared knowledge and experimentation," said Tengbom.

Judges comments: "Tengbom's self-designed office offers a fun new take on what a sustainable interior can look like. The renovation easily rivals a new build interior, proving that reuse doesn't have to mean sacrificing on aesthetics. Through the considered use of colour and existing furnishings, the studio was able to revitalise a former industrial space without the need for mountains of new materials. "

Studio: Tengbom
Project: Tengbom's Stockholm Office Interior
Credits: Mark Humphreys, Eva Brännvall, Stefan Samuelsson, Pascaline Salzedo Joubert, Mårten Tovle, Viveka Bunke and Katya Högberg