This staggering 23 000 m² landscraper is the next new low-carbon wonder turning heads and architectural magazine pages.

When Katajanokan Laituri opens this summer of 2024, it will be home to Stora Enso's new HQ and New Solo Soko's Pier 4 Hotel, complete with conference areas, restaurants, cafes, a rooftop terrace and office space.

The initial dream of the owner, Varma and anchor tenant, Stora Enso, was to build a flexible, adaptable building using energy primarily from renewable sources both in construction and operation. By designing the entire building in mass timber, these ambitious sustainability goals are taking shape and is expected to reach LEED Platinum status.

The mixed-use space is centrally located on the harbour front and soon, visitors will be able to enter the ground floor and admire for themselves the immense, state-of-the-art mass timber construction. Everything, right down to the window fixtures, is 100% sustainable. 700 windows weighing 210 tonnes (think 50 hippos) are supported with 97 m³ of super strong engineered Stora Enso wood: Effex® Dura. Effex® Dura is a unique product, its innovative thin-lamella (8-9.5 mm) structure, ideal for long-span windows and sliding doors where extra rigidity is needed because it is dimensionally stable up to 6 m in sashes/frames and maximises the overall glass area for expansive panoramic views. It uses a normal finger-jointed and/or glued laminated component with a thin lamella surface on one or two sides of the component. As of January 2024, construction work at the site continues to progress as planned, and the four-story building is topped out at rooftop height.

All of the Sylva™ CLT Floors and Roofs (5,940 m³) and Sylva™ LVL Beams and Columns (1,690 m³) (now imagine three solid wood Olympic swimming pools of  solid wood) were successfully delivered. A total of 171 just-in-time deliveries!

From the ground to the finish, including the façade, everything was completed in just seven quick hot (and cold) months and perfectly on schedule. The entire frame schedule was accurate within 2 days!

The Katajanokan Laituri frame built with massive wooden elements has been rising steadily at Katajanokka in Helsinki since March 2023, and the rooftop height was reached in October 2023. Interior preparation work is now underway: building technology is being installed in the office part and interior preparation work for the hotel has also begun. "Stora Enso is incredibly proud of this project, in our mind, no one else could have delivered such an extremely complex build in such a short time frame." reported the project manager, Antto Kauhanen.

Sustainability achievements

Total carbon footprint (emissions generated for the wood supplied by Stora Enso to make the building) 631 tonnes of CO₂e
Total carbon storage (greenhouse gases removed from the air while the trees were growing and stored as carbon in the building) 6,000 tonnes of CO₂e

Architect's video impression of how the building will look