Tuomas Siitonen Office

Tuomas Siitonen Office Architectural practice in Helsinki, designing sustainable settings for living. For full site, head to www.tuomassiitonen.fi

Tweets, mostly about our own works-in-progress with occasional urban notions, exhibition visits, book recommendations and random thoughts.

As a father of a 13-year old boy who moved from Finland to the US I have begun to take an interest in how another 13-yea...
08/04/2026

As a father of a 13-year old boy who moved from Finland to the US I have begun to take an interest in how another 13-year old kiddo from Finland moved to the US in 1923 with his architect dad and managed to become one of the most well-known American architects. As the name of Eero Saarinen is mentioned here constantly and I just read the well-known study American Architects and the Mechanics of Fame (R. Williamson, 1991, University of Texas Press) I think it is time to do a Siitonen chasing Saarinen roadtripping sidequest before heading home for the summer. Stay tuned, Photo: MFA / Pinterest (somebody in the know: there are versions with only Eliel in this pose and of Eero alone, is this a digital collage 🤔)

08/04/2026
This pedagogic kit introduces sustainable architecture through a hands-on, exploratory approach. This tactile process sl...
06/04/2026

This pedagogic kit introduces sustainable
architecture through a hands-on, exploratory
approach. This tactile process
slows down the act of learning, encouraging
users to closely examine how parts fit together
and function as a whole.
Rather than presenting sustainability as an
abstract concept, the kit frames it as something
embedded within each element of a building.
As builders handle and construct these
components, they are prompted to consider
the origins, materials, and production methods.
See the kit as part of Virginia Fellows Showcase tonight.

Hehee! Looking forward to the Spring term in Charlottesville. I will be teaching a design studio titled Breathe In / Bre...
13/01/2026

Hehee! Looking forward to the Spring term in Charlottesville. I will be teaching a design studio titled Breathe In / Breathe Out, focusing on building metabolism and thermodynamics and co-teaching Research Methods, where expect to learn a lot too. In April we are having the Fellows exhibition and talk with Ozan as part of the great Public Program of - happy to meet all the new students and colleagues too.

Welcome 2026 ⭐️ In 2025 3 building projects (pictured summerhouse extension in Hauho) were completed and 2 new projects ...
02/01/2026

Welcome 2026 ⭐️ In 2025 3 building projects (pictured summerhouse extension in Hauho) were completed and 2 new projects are in progress. Regarding museums and exhibitions with we completed museum of Hanko, Juminkeko permanent exhibition renewal and Kuopio art museum permanent exhibition renewal as well as the Beyond Zero -travelling exhibition. In 2026 the new Oulu Museum will open. I have resided in the US since August, working on my research and teaching indpiring students. Looking forward to what the year will bring ⭐️

Happy Holidays! Even if this is not a house I have designed it is a house I have inhabited for the past months. I am ver...
23/12/2025

Happy Holidays! Even if this is not a house I have designed it is a house I have inhabited for the past months. I am very fond of this sweet little building from around 1820s. Here is a study on ithttps://officearchitect.virginia.edu/sites/officearchitect/files/2024-02/UVA%20MewsHSRFinal.pdf

Happy Holidays! Hyvää joulua ja onnellista uutta vuotta!
22/12/2025

Happy Holidays! Hyvää joulua ja onnellista uutta vuotta!

A humble extension to a Yrjö Lindegren -designed summerhouse from the 1940s, Hämeenlinna, Finland. As the exterior is st...
31/10/2025

A humble extension to a Yrjö Lindegren -designed summerhouse from the 1940s, Hämeenlinna, Finland. As the exterior is still under construction summery interior pics to share only. Tuomas Siitonen Office 2021-2025, Tuomas Siitonen and project architect Eilo Hatakka.

Summer greetings! ☀️This August I’ll be packing my bags and heading to Virginia to start as an Assistant Professor at  f...
12/07/2025

Summer greetings! ☀️

This August I’ll be packing my bags and heading to Virginia to start as an Assistant Professor at for 25-26🎓💥

That means I’ll be pressing pause on my duties at Aalto University and wrapping up my current projects here at my own office and . Both offices will stay in operation.

Excited for this next chapter of research, teaching, and learning — let’s see what the year brings! 🙌✨

New       in the making
24/06/2025

New in the making

Osoite

Hämeentie 4 C 10
Helsinki
00220

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