“We aim for a balanced approach, integrating architectural heritage, sustainable design, and urban vitality into all our projects.”

Founded in Helsinki in 1985, Arkkitehdit Davidsson Tarkela (aDT) is an office specializing in the renovation and extension of listed buildings as well as demanding new construction projects. Our expertise also encompasses design project management, urban design, and the integration of circular economy principles and sustainable development throughout project processes. aDT became a member of the Solwers Plc in 2018. In July 2024, aDT acquired Finland’s oldest architectural firm, Siren Architects Oy. 

aDT offers versatile design services to both public and private clients. The office employs architects and interior designers whose close collaboration with clients and networked design approach ensures a comprehensive perspective on projects.

In projects involving protected and historically significant buildings, aDT’s extensive understanding of the site’s societal, local, and future significance has garnered praise and awards for the office.

In new construction, we undertake diverse public projects including museums, hotels, convention centers, offices, schools, and sports facilities.

We believe site conditions and project needs define each project’s identity. aDT aims for expressive, distinctive, and lasting architecture, blending the essence of the place with functional and material considerations. We advocate for a cohesive architectural theme from the large scale to the detail level.