Tuomas Tiensuu
Counsel
Head of Real Estate
Tuomas Tiensuu is a seasoned expert in agreements related to energy, natural resources, and green transition projects.
– The Legal 500 EMEA 2025, Real Estate and Construction
We had the pleasure of working with Antti Aaltonen and Tuomas Tiensuu in our recent transaction and are very happy with the industry knowledge, hands on approach and commercial acumen, which really made a difference during transaction execution.
– The Legal 500 2024, Real estate and construction


Service areas
Tuomas Tiensuu advises international and domestic investors and companies in transactions, investments and projects with a particular focus on real estate, natural resources and energy & infrastructure law. He is known for his outstanding project management skills, commercial acumen and strong commitment to providing exceptional client service.
Tuomas’ work is particularly focused on large and complex transactions and projects involving real estate and energy & infrastructure assets. Tuomas regularly advises our clients in both portfolio and large single asset real estate transactions in a variety of asset classes, including commercial, forest, office, logistics, industrial and public use properties. He has an outstanding track record of supporting clients on M&A transactions regarding energy, natural resources, and green transition projects and businesses. Tuomas’ practice also includes general corporate law, regulatory and construction matters beyond transactional advice.
Tuomas graduated from the University of Helsinki and holds a LL.M. degree from Columbia Law School, where he was recognised for his superior academic achievement. He has also worked as a visiting lawyer at Hengeler Mueller in Düsseldorf, Germany.
Dittmar & Indrenius Attorneys Ltd. (2018–present)
Hengeler Mueller, Visiting Lawyer (2024–2025)
Kalliolaw Attorneys, Associate (2014–2017)
Columbia University (LL.M., Harlan Fiske Stone Scholar, Parker School Certificate for Achievement in International and Comparative Law, 2018)
University of Helsinki (LL.M., 2014)
- Finnish Bar Association
English
Finnish
Swedish
German
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