- Ratina Shopping Center, Tampere, construction begins in 2009
- Docrates Cancer Clinique, Helsinki, 2009
- Varma Insurance Company Head Office, Helsinki, to be completed in 2009
- FCG Head Office, Helsinki, 2007
- VTT (Technical Research Centre of Finland) Information technology house, Espoo, 2005
- High Tech Center Ruoholahti, Helsinki, 121 025m3, Parking premises 152 800m3, 2002
- Ruoholahti Shopping Centre, Alko’s Porkkalantalo renewal and extension, Helsinki, 273 825m3, 2002
- Paciuksenkatu 21 Real Estate Corporation Ltd. office building, Helsinki, 50 600 m3, 2002
- Nokia Research Center extension, Helsinki, 40 000 m3, 2000
- Nokia Research Center, Helsinki, 160 000 m3, 1999
- Porvoo Library, Porvoo, 19 200 m3, 1997-1999
- The Extension to the Finnish Embassy in Moscow, Russia, 1991-95, 13 500 m3
- Office Building in Töölönlahti-area, site analysis, Helsinki, 1994
- Office Building in Kamppi, site analysis, Helsinki, 1994
- Wilhelmiina, Center for residential services for the aged Huopalahti, Helsinki , 40 000 m3, 1992-95
- Temporary entrance builiding for the Kaisaniemi underground station on Vuorikatu, 500 m3, Helsinki 1993
- Joensuu Library, Joensuu, 25 500 m3, 1992
- Office Building for The National Board of Forestry, Vantaa, 27 000 m3, 1991
- Itäkeskus Mall, part B, Helsinki, 80 000 m3, 1991
- Merirastila Kindergarden, Helsinki, 2 525 m3, 1991
- Ekono OTA IV- office building, Espoo , 42 000 m3, 1990
- Real Estate Corporation Mannerheimintie 168 Office building, Helsinki , 42 500 m3, 1990
- Kameeli Commercial Center, Helsinki (project)* 1989-
- Unic Corporation office building*, Espoo, 50 850 m3, 1987
- Centre for Changing Exhibitions (project), Helsinki, 34 000 m3, 1987
- Hollola Swimming and Multipurpose Centre*, Hollola, 20 400 m3, 1986
- Nokia Corporation office building (project)*, Espoo , 210 000 m3, 1983
- VVO office building, Helsinki, 5 600 m3, 1983
- President Urho Kaleva Kekkonen Institute for Health Promotion and Research*, Tampere, 29 000 m3, 1983
- Kaleva Swimming Centre*, Tampere, 52 300 m3, 1979
- Metal Workers Union Course Centre*, Tampere, 45 100 m3, 1977

Housing

- Scarlett Housing Company, Helsinki, 6 930 m3, to be completed 2009
- Uudenmaankatu 28 Housing Company, refurbishment, Helsinki, 10 810 m3, 2008
- Leppäsuo Triangle, Helsinki, under construction
- Autism foundation – Käpylä Activity house, Helsinki 2003
- Housing Company Helsingin Käpykallio, 23 150 m3, 2002
- Western Bank of Porvoo, Contemporary Wooden Town, Housing Block 1998-
- Pellervontie Servicehouse, Helsinki , 15 000 m3, 1996-
- Studio Widnäs, ateljé and residence for an artist, Fiskars , 2 000 m3, 1995
- Real Estate Corporation Ruusunlehvä, Espoo , 7 000 m3, 1995
- ASO-Säterinkatu 7, Espoo , 8 000 m3, 1995
- VVO-Laivalahdenkaari,Helsinki , 23 628 m3, 1995-
- Service homes for the elderly in Huopalahti, Helsinki , 9 500 m3, 1992-95
- VVO-Kellosaarenkatu, Ruoholahti, Helsinki, 15 440 m3 , 1994
- Real Estate Corporation Ritarinkannus and -maja, Porvoo, 3120 m3 + 2833 m3, 1994
- Real Estate Corporation Ritarinkoto and -pirtti, Porvoo, 4 010 m3 + 5 510 m3, 1991
- VVO Väinö Auerinkatu, Helsinki, 16 735 m3, 1990
- VATRO Gadolinin katu, Helsinki, 17 260 m3, 1990
- Experimental apartmenthouse (project), Hestra, Sweden 1990
- Voas XII, student village, Vaasa , 18 440 m3, 1989
- Real Estate Corporation Pikipruuki 4, Vaasa, 10 000 m3, 1989
- Villa Rinne, Espoo, one-family house, 800 m3, 1988
- Housing Corporation Kaarnatie, Helsinki ,16 900 m3, 1987
- Housing and Real Estate Corporation Vaskihuhdatie, Helsinki , 49 000 m3, 1983
- VVO-Radiokatu, Helsinki, 17 320 m3, 1983
- Housing and Real Estate Corporation Siltakyläntie, Helsinki, 35 800 m3 1982
- Experimental houses, Ylätuvanpolku housing company*, Helsinki, 6 130 m3, 1981

Renovations and Refurbisments

- Salmisaarentalo, Renovation design for the old ALKO factory and headquarters building, 350 000m3, Helsinki, 1998 -
- Porkkalantalo, Renovation and extension including the following:
  Shopping Centre 237 825 m3,
  High Tech Center II Helsinki 121 025 m3,
  Parking Building 152 800 m3,
  Helsinki, 2002
- Heimola Building, Helsinki 1989-1999
- Villa Aro, renovation and partial restoration, Helsinki, 1996
- The Siuntio Spa , 20th anniversary-refurbisments, Siuntio, 1994-95
- Helkama Baltic-Marina, preliminary sketches, project Tallinn, Estonia 1993
- Mikonkatu 9, renovation and partial restoration, project Helsinki 1991
- The Finnish Embassy in Moscow, renovation and partial restoration 1992-1995
- Kisahalli, partial renovation in phases 1985-90

Town planning and land use studies

- Townscape proposal for Central Pasila, Helsinki 2004
- Siltakatu area land use study, Lutakko, Jyväskylä, 60 000 m2, 2001
- Porvoon Kuninkaanportti, shopping block, general plan 2002-
- Vantaa Square, Report on Townscape, Vantaa 1998
- Huvilinna-housing block, town plan sketch , Espoo 1992
- Sanomala*, land use proposal , Vantaa 1992
- Block 38b (Kameeli)*, Helsinki (project) 1989-
- Peijas*, land use proposal , Vantaa 1980
- Itäkeskus, areas B-1 and C-1*, town plan sketch, Helsinki 1974-75

Furnitures and interiors

- Desks, book-shelves and other fixed furnitures and interior design for Porvoo Library, Porvoo, 1997 – 1999
- The Finnish Embassy in Moscow, extension, interior design, 1994
- Lighting fixtures; Ekono office building, the Finnish Enbassy in Moscow 1989-
- Chair, carbon fibre, prototype 1987


Prizes in architectural competitions
( members of the project team in parentheses)

International competitions

1st prizes

- Duntes-Upes Office Building, Riga, Latvia, 2003
- Erkebispegården, Trondheim, Norway divided 1st prize, 1991 ( Siitonen)
- Oy Hankocenter Ab Recreational and Commercial Area, 1991 (Helin & Siitonen)

2nd prizes

- Etelä-Vantaa Areal Centre, 1971 (Helin&Nurmela&Raimoranta&Siitonen&Tasa)
- A New Royal Library On The Waterfront, Copenhagen, Denmark, 1993 (Siitonen)

3rd prizes

- International Brick Award, Vienna 2008

Purchases

- Jyväskylä Concert Hall, Jyväskylä 1998 (Siitonen)
- Helsinki Railway Station, Helsinki 1995 (Siitonen)
- Ørestaden, the international ideas competition , Copenhagen, Denmark, 1994 (Toker&Ng&Siitonen)
- Tampella central area, extended invited competition, Tampere, 1990-91 (Helin & Siitonen)
- Kamppi-Töölönlahti ideas competition, Helsinki, 1986 (Helin&Siitonen)

Honourary mentions

- Museum of Comtemporary Art in Helsinki, 1993 (Siitonen)
- Pori Concert Hall, 1981 (Siitonen)

National competitions

1st prizes

- Leppäsuo Housing Block, 2007
- Contemporary Wooden Town, Porvoo, 1998 (Siitonen)
- Porvoo Library, Porvoo , 1997 ( Siitonen)
- Huvilinna-housing block, Espoo, 1996 (Siitonen)

- Kameeli Commercial Block in Helsinki, 1989 (Helin & Siitonen)
- Meri-Teijo Recreation Area, 1989 (Helin & Siitonen)
- Building for State Offices, Espoo, 1988 (Helin & Siitonen)
- Centre for Changing Exhibitions in Helsinki, 1987 (Siitonen)
- Gerby Area Centre, Vaasa, 1986 (Helin & Siitonen

- Unic Corporation Head Office, Espoo, 1984 (Helin & Siitonen)
- Hollola Swimming and Multipurpose Centre, 1983 (Helin & Siitonen)
- The Nokia Corporation Headquarters, Espoo, 1983 (Helin & Siitonen)
- Joensuu Library, 1982 (Siitonen)
- Pukinmäki Housing Area, Helsinki, 1981 (Helin & Siitonen)
- Urho Kekkonen Institute for Health Promotion and Research, Tampere, 1981 (Helin & Siitonen)
- Haka Westend Housing Block, Espoo, 1980 (Siitonen)
- Parainen Sports Centre, 1977 (Helin & Siitonen)
- Extention of Turku University, 1976 (Helin&Nurmela&Raimoranta&Siitonen&Tasa)

- Metal Workers´ Union Course Centre, Tampere, Teisko, 1974 (Helin&Nurmela&Raimoranta&Siitonen&Tasa)
- The Centre of Turku Student Village, 1973 (Helin&Nurmela&Raimoranta&Siitonen&Tasa)
- Tampere Swimming Centre, 1973 (Helin&Nurmela&Raimoranta&Siitonen&Tasa)

2nd prizes

- Housing block in Vuosaari ( VVO - Etelä-Suomen YH-rakennuttajat),
Helsinki 1996 (Siitonen)
- The Finnish Pavillion for Sevilla World Expo, 1989 (Siitonen)
- Malmitalo, Multipurpose Building, Helsinki, 1987 (Helin & Siitonen)
- Bank of Finland, Turku Branch, 1986 (Siitonen)
- Tapiola Cultural Centre, Espoo, 1980 (Siitonen)

3rd prizes

- Näkinpuisto Housing Block, Helsinki, 1985 (Helin & Siitonen)
- Sasmo House Competition, 1976 (Helin & Siitonen)
- Tampere Swimming Centre, 1973 (Helin&Nurmela&Raimoranta&Siitonen&Tasa)
- Planning and ideas competition for the Tornimäki Sports and Recreation Area in Mikkeli, 1972 (Helin&Nurmela&Raimoranta&Siitonen&Tasa)
- Seinäjoki Cemetery and Chapel, 1972 (Helin&Nurmela&Raimoranta&Siitonen&Tasa)
- Kouvola Library, 1969 (Hetzer-Siitonen)
- The Extension to Linnanmäki Amusement Park, Helsinki, 1967 (Korpela&Savander&Siitonen& Sundman)

Purchases

- President´s Official Residence, Helsinki, 1984 (Siitonen)
- Lappi University, Rovaniemi, 1982 (Helin & Siitonen)
- Helsinki University, Kumpula Area, 1979 (Helin & Siitonen)
- Tampere City Library,1979 (Siitonen)
- Kouvola Building and Cultural Center in Kouvola, 1979 (Siitonen)
- Ideas and Planning Competition for The Malminkartano Area, Helsinki, 1973 (Helin&Nurmela&Raimoranta&Siitonen&Tasa)
- Varissuo Town Plan Competition, Turku , 1972 (Helin&Nurmela&Raimoranta&Siitonen&Tasa)

Honourary mentions

- Housing Block for the Harvoilanmäki Housing Fair, 2006
- Museum Centre, Kotka, 2005
- Kuopio University, 1972 (Sipinen&Siitonen)
- Tikkurila Orthodox Church, 1991 (Siitonen)

Honours and awards:

- Best Office Building 2009, Duntes Biroiji, Latvia 2009
- The Construction Rose Honourary Mention, 2008
- Finnish Wood Award 2006 - Honorary Mention (Studio Widnäs)
- Finnish Concrete Architecture Award 2004
- The Construction Rose 2004
- National Award for Architecture 1983
- Finnish Concrete Architecture Award 1992
- Viljo Rewell - Memorial Prize 1973
- "Miljöö"- diploma of honour, Uusi Suomi-newspaper 1991
- SIO * award 1990 for Ekono OTA IV building
( *The Association of Interior Architecs in Finland)
- Lighting Award of the Year, 1990 for Ekono OTA IV building

Works in Museums/Collections:

- Chair, carbon fibre, in The Museum of Applied Arts, Helsinki

Works published:

- Articles by Tuomo Siitonen and project presentations published in over 150 architectural magazines, books or publications in Europe, USA, Japan and Australia.
- Works in over 40 architectural exhibitions in Europe, USA and Japan.

Works in exhibitions

- Finnish Architecture 0607, 2008-2009
  Museum of Finnish Architecture, touring exhibition:
  . Helsinki, Finland
  . Paris, France
  . St Petersburg, Russia
  . Copenhagen, Denmark
  . Kiev, Ukraine
- New Urban Living, Helsinki Finland 2008
- "City Home", new residential architecture in the Helsinki area, Museum of the Finnish Architetcture, Helsinki 2007
- Finnish Architecture 0405, Finland 2006
- Finnish Architecture 0203, Finland 2004
- "Architektur im 20. Jahrhundert: Finland"
  The German Architecture Museum & The Museum of the Finnish Architetcture, Frankfurt am Main, Germany 1999
- "The History of the Museum of the Finnish Architetcture"
  ed. Timo Keinänen, The Museum of the Finnish Architetcture , Helsinki 1999
- "Sauna"
  ed. Jari Jetsonen, Snellman-sali, Helsinki 1999
- "Ph 50" , Jubilee exhibition at 50th anniversary of Pentti Hakala, interiordesigner, Helsinki , 1999
- "Finnish Social Care Facilities", touring exhibition, Helsinki University of Technology, SOTERA-institut , Lithuenia, 1999
- "Finland Builds IX", touring exhibition, The Museum of Finnish Architecture, Helsinki, 1998 catalogue Sanna Vauhkonen, editor
- "Furo & Sauna", I-land Center, Shinjuku, Tokio, Japan 1997
- "Helsinki / City in the Forest"
  Helsinki City Planning Department, Tokyo, Asahikawa, Japan 1997
- "Puun aika - Time of the wood", Fiskars, 1996
- "Rakennettu puusta - Timber construction in Finland",
  Museum of Finnish Architecture, Wood information, Helsinki , 1996
- "The Nordic Embassy in Berlin", Touring exhibition about the best entries in the architectural competition; Stockholm, Copenhagen, Oslo 1996
- "The Legacy of C.L. Engel"
  The National Board of Public Buildings, Museum of Finnish Architecture, touring exhibition, Helsinki , 1995
- "The Finnish Pavilion in Sevilla World Expo and the architectural competition", Sevilla 1995
- Finn Build, Habitare, Helsinki 1994
- "An Architectural Present - 7 Approaches", 1990-1995
  Museum of Finnish Architecture, touring exhibition:
  . Helsinki, Finland
  . Stockholm, Sweden
  . Rome, Italy
  . London, UK
  . Rotterdam, Holland
  . Solothurn, Switzerland
  . Tokyo, Japan
  . Sapporo, Japan
  . Cranbrook, USA
  . Washington, USA
  . Iowa,USA
  catalogue: Marja-Liisa Norri,Maija Kärkkäinen, editors
- "Architecture and Individuality "
  An international invited exhibition at the 2nd Nordic-Baltic ArchitecturalTriennale in Tallinn, Estonia 1993
- "Domus avis", Skanno, Design ForumHelsinki, Finland, 1993 - "Miljöö 92", Espoo, Finland, 1992
- "Finland Builds VIII",touring exhibition Museum of Finnish Architecture, 1992
  catalogue. Jouni Kaipia, editor
  . Helsinki
  . Turku
  . Jyväskylä
- "Hus för konst och byggnadskonst" Stockholm, Sweden, 1991 catalogue: Karin Winter, editor
- "NordForm" Svensk Form, org. Mälmö, Sweden, 1990 catalogue: Bianca Heymowska, editor
- "Bauen in Vaasa" Kiel, Germany, 1990
  catalogue:Asko Halme, editor
- "Architektur, Kunsthandwerk,Malerei" Munich, Germany, 1990
- "Furnitures designed by Architects", Artek, Helsinki 1987
- "Finland designs", The Museum of Applied Arts, Helsinki, 1987
- "Finland Builds VII", touring exhibition, The Museum of Finnish Architecture, Helsinki, 1986, catalogue: Kaarin Taipale, editor
- "Suomalainen pientalo"; touring exhibition The Museum of Finnish Architecture, Helsinki, 1986
- "Pilvilinnat - Living in future", SITRA Helsinki and Jyväskylä, Finland, 1985
- "Tendenser i nordisk arkitektur", Skala-gallery, Copenhagen, Denmark, 1985
- "New Waves in Scandinavian Architecture/Scandinavia today", New York, USA, 1982
- "Architettura autonomi e impegno progettuale in Finlandia", Ravenna, Italy 1982
- "Finland, Nature, Building" Scandinavia Today, USA, 1982-83
- "Maison de bois", Centre Georges Pompidou Paris, France, 1979
- "Finland Builds VI", touring exhibition The Museum of Finnish Architecture, Helsinki, 1982
   catalogue: Marja-Riitta Norri, editor
  . Helsinki
  . Prague etc.
- "Technique et l'architecture", Centre Georges Pompidou, Paris, France, 1982
- "Wohnumwelt in Finnland"GDR, 1980
- "Sports and leisure", touring exhibition Museum of Finnish Architecture, Helsinki 1977, catalogue: Esa Piironen, editor
- The architectural competitions, Exhibitions by Safa, The Finnish Association of Architects, 1967 -
- Nominee in "11 cities - 11 countries"Leeuwarden, The Netherlands, 1990