Renovation

We deliver demanding and exceptionally demanding structural design solutions for renovation, extension, and alteration projects with the highest level of expertise. Our designers have extensive experience ranging from 19th-century buildings (SR1, SR2, SR3 security ratings) to 21st-century projects. When applicable, we utilize Building Information Modeling (BIM) in renovation projects to enhance the design process.

The alteration, repair, and renovation of buildings, structures, and properties demand specialized expertise, understanding, and professionalism, as well as knowledge of the existing building stock. At NODETEC, we understand this and pride ourselves on being experts in renovation design.

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Modern Renovation Construction

Buildings and structures require regular maintenance and repairs throughout their lifecycle. Structural modifications also become relevant when old spaces are repurposed for new uses or when outdated buildings need to be upgraded to better meet contemporary needs. The foundation of successful renovation and alteration design lies in a skilled design team that understands the client’s needs and delivers high-quality structural renovation plans.

Our designers have extensive experience in renovation and alteration projects of all sizes. We specialize in demanding projects, including culturally and historically significant buildings, structurally challenging designs, and properties of high importance due to their location or use. Our portfolio includes schools, daycare centers, attic extensions, office buildings, hospitals, industrial facilities, barracks, and many other types of buildings with diverse functions.

Our Structural Renovation Services Include:

Condition assessments, surveys, and repair need evaluations
Coordination and planning of condition investigations
Demolition planning
Repair and modification design for structural frames
Damage repair design (e.g., fire and water damage)
Facade, balcony, and roof repair design
Design of extensions and interfaces for renovation and alteration projects
Building physics design
Change of use design
Repair design for complex structures
Design for protected buildings (sr-1 and sr-2 classified)
Third-party design reviews

Our services are always tailored to meet the client’s specific requirements. Contact us to learn more about our expertise and services!

Want to learn more?

Janne Hellsten

Design director, partner
+358 40 528 8816

I have experience in structural design since 2009. My first design assignments were the design of concrete elements and residential apartment buildings. Since 2012, I have been involved in large renovation projects, such as the renovation of the Olympic Stadium and the OP Vallila headquarters. In the industrial sector, I have worked as a structural designer in several large projects in which I have designed exceptionally demanding concrete and steel frames and special structures such as underground high pressure walls. Examples of such projects include the Kaitaan metroasema (Länsimetro), the Finnoon Pumping Station and the Turun Wastewater Treatment Plant. In recent years, I have been responsible for the structural design of large renovation and modification projects in high-value properties in a prime locations in Helsinki.
In addition to project work, I am the head of the structural unit and work in the company's development and strategy.

Expertise: Concrete and steel structures, Renovation projects, FEM

Certifications & Achievements:
• M.Sc. in Building Technology
• Over 15 years of experience in structural engineering and BIM
• Founding Partner of Nodetec (since 2017)

Outside the office, I have the opportunity to develop communication skills and learn to create a good team spirit by spending time with my wife and two children.

Janne Hellsten
Co-Founder & Structural Engineer, Manager of Kotka Office
Nodetec Oy

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