TJT-Rakenne
Building, structural and HVAC design for houses and renovations, serving households and builders in Lahti and Heinola
Highlights
- New on EvolcAdded 2026-10-28
About TJT-Rakenne
TJT-Rakenne Oy provides building and structural design for detached houses, including extensions, alterations and garages, as well as principal designer and supervising site manager services. It also produces HVAC (LVI) and wastewater designs for projects of all sizes, from small houses to renovations of apartment and row buildings.
Its customers are private households and construction companies. The company works mainly in the Lahti and Heinola areas and neighbouring municipalities, and draws on a network of specialist designers and contractors for projects.
The company is registered in Heinola, Finland, and was founded in 1991.
Product: Building design, structural design, HVAC (LVI) design, principal designer and supervising site manager services.
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