Signe – Mannerheimintie 14 


A high-end office and retail building in the heart of Helsinki

Signe, Mannerheimintie 14, is a high-end office and retail building in the heart of Helsinki CBD. The building will consist of 12 300 m² office and 4 500 m² retail premises. 

The architecture of Signe is based on a modern interpretation of traditional Helsinki inner-city design. The exterior architecture is defined by finished details and high-quality materials. The main material of the facade is natural stone, in addition dark patinated copper and clear glass are also used on the exterior surfaces. 

The cast-in-place concrete frame with post-tension slabs enables highly flexible and open floor plans, both on the office and retail floors. In the planning phase comparative studies were prepared on different frame solutions. The cast-in-place frame chosen is low-carbon due to the significantly smaller amount of steel compared to more conventional concrete or hybrid frames 

The building is designed to meet the high requirements of both LEED Platinum and WELL certification. 

The anchor tenant of the offices premises is PwC. 

SARC is responsible for the principal and architectural design of the project. The building is to be completed by the end of 2026. 


Location: Helsinki 

Scope: 23.800 brm² 

Client: Sponda Oy