Oslotre

HasleTre

World’s first wooden office building designed for disassembly

Shingle fasade of the first dismantlable and reusable wooden office building

HasleTre is a cutting-edge project leading the way in circular construction. This four-story office building is designed for easy disassembly and reuse, ensuring a sustainable lifecycle from construction to use and eventual disassembly. By utilizing wood-to-wood joints instead of steel, the structure simplifies assembly and makes future reuse more efficient. Combining traditional craftsmanship with modern industrial techniques, Hasle Tre represents the next generation of sustainable timber architecture.

Shingle fasade of the first dismantlable and reusable wooden office building
Photo: Einar Aslaksen
Shingle fasade of timber office building
Photo: Dmitry Tkachenko
Shingle fasade close up
Shingle fasade close up
Office interior with wooden surfaces—cozy, warm design for a healthy work environment
Photo: Einar Aslaksen
Massive timber staircase with timber flooring and round timber raling
Photo: Einar Aslaksen
Office interior with wooden surfaces—cozy, warm design for a healthy work environment
Photo: Einar Aslaksen
Office interior with wooden surfaces—cozy, warm design for a healthy work environment
Photo: Einar Aslaksen
Office interior with wooden surfaces showing informal working spaces in amphitheater staircase
Photo: Einar Aslaksen
canteen area in Hasletre timber office building with cozy, warm design with natural materials
Hasletre Office interior with wooden surfaces—cozy, warm design for a healthy work environment
Photo: Dag Sandveen
Fixed furniture with wooden cladding and seamless transitions, appearing as an integral part of the architecture. Bold use of color in details adds character and playfulness
Fixed furniture with wooden cladding and seamless transitions, appearing as an integral part of the architecture. Bold use of color in details adds character and playfulness
Hasletre Office interior with wooden surfaces—cozy, warm design for a healthy work environment
Photo: Einar Aslaksen
Massive timber staircase with timber flooring and round timber raling
Photo: Einar Aslaksen
Massive timber staircase with floor to ceiling windows
Photo: Einar Aslaksen
Tound timber raling close up
Bathrooom with wooden surfaces and toilet made of wood chips
Photo: Moritz Groba
steelfree connection between massivetimber elements
Photo: Einar Aslaksen
steelfree connection between massivetimber elements
long CLT slab being placed on site
Photo: Moritz Groba
Steel-free column-beam joint assembled with timber dowels
Photo: Moritz Groba
facade Hasletre
facade Hasletre
Plan drawing Hasletre
Plan drawing Hasletre
Section drawing Hasletre
Axonometric drawing of steel-free column-beam joint assembled with timber dowels
mock up og steel-free column-beam joint assembled with timber dowels
Building category:Office
Project size:3000 m2 BTA
Materials used:CLT and Glulam construction, shingel fasade
CLT area:474 m3
Glulam area:108 m3
Delivery from Oslotre:Architectural design and construction
Status:Completed
Year:2022
Location:Haslevangen 18