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Arkkitehtitoimisto K2S

Architecture office in Helsinki designing landmarks, churches, stadiums and schools in Finland

Helsinki, FinlandFounded 2002k2s.fiWebsite technologies

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About Arkkitehtitoimisto K2S

Arkkitehtitoimisto K2S designs architecture, including the Helsinki Olympic Stadium, Kamppi Chapel, Ylivieska Church, Paasitorni Hotel & Congress Centre and Enter – Sipoo High School and IT College. Its stated approach combines careful details, contextual understanding and diverse materials to produce resilient architecture with Finnish roots.

The office is led by partners Kimmo Lintula, Niko Sirola and Mikko Summanen, who share a professorship at Aalto University. The website reports 69 projects and more than 50 prizes and awards.

The company was founded in 2002 and is headquartered in Helsinki. In 2025 it reported a first prize in a competition for the revitalisation of the Helsinki Stock Exchange building.

Product: Architectural design services for buildings and public spaces.

Public tenders won

2 tenders won since 1 Jan 2024 from 1 public buyer in Finland, worth €71.5M as awarded. From EU award notices (TED) that name Arkkitehtitoimisto K2S by its registry number.

  • 26 Jun 2026 Helsingin kaupunki, kaupunkiympäristön toimiala · JÄLKI-ILMOITUS: Töölön Kisahallin perusparannus: Suunnittelijoiden hankinta · €9.5M notice
  • 13 Apr 2026 Helsingin kaupunki, kaupunkiympäristön toimiala · Vaativien tilahankkeiden pää- ja arkkitehtisuunnittelun puitejärjestely 2026-2028 (2028-2030) · €62.0M notice

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