For us, collaboration means better construction. The A-Insinöörit Group is owned by highly experienced partners. Our aim of succeeding in all our projects together with our clients is based on our strong values, “together and better”.

Arkkitehtitoimisto Lappalainen & Korjonen Oy Architecture firm was established in 1984 by Jyrki Lappalainen and Markku Korjonen. The company has know-how from over 35 years. Our most well-known designs include Hotel Onnentähti in Tuuri and the Kerubi stadium in Joensuu.

Genuine wood is an aesthetically pleasing construction and interior design element that can stand the test of time and withstand highly-demanding weather conditions. The carefully selected wood types originate from the best, sustainably managed pine and spruce areas. Over the years, the satisfied customers of Liperin höyläämö have included house building factories, construction companies and enterprises, and naturally private constructors and interior designers in Finland as well as Asia and Europe.

Arcadia Oy Architects is a company specialised in architectural design from Joensuu. The company’s extensive design service covers education, corporate and healthcare buildings. We are one of the leading companies in Eastern Finland in designing residential units.

Ecotelligent Ltd is a company operating in Liperi designing and manufacturing transmission towers with a wood construction and new generation 5G intelligent poles. The company also performs 5G consultation and smart urban planning. Wood has been used in constructing houses, vessels and bridges for centuries. However, no one had thought of using communication towers built out of timber as part of the telecommunications infrastructure before EcoTelligent announced its first 40-metre Ecopol tower in Hungary in 2015.

Our mission is to provide our clients with a proficient and reliable design service in structural design and prefabrication in Eastern Finland and across the country. Our close and motivated team joins decades of experience with an enthusiastic goal for continuous development. We aim to deliver increasingly smart design solutions to meet today’s and tomorrow’s challenges.

For nearly 30 years, Karelia Ikkuna has been manufacturing energy efficient windows to the highly demanding Nordic conditions. The company’s made-to-measure products are manufactured in North Karelia. The company’s high-quality products bring together Finnish pine, energy efficient glass and weatherproof powder-coated aluminium.

Karelia Puutec Ltd is a construction company specializing in wood construction. We make unique structural solutions from solid wood. We are specialized to hand-carved log structures, Timber-Frame column beam construction and, to an increasing extent, CLT construction as well. What we do is modern craftsmanship that combines industrial wood construction and carpentry skills.

Woodartist Ltd is a wood processing company designing and manufacturing unique furniture, furniture collections and solid wood interior fittings. While the Woodartist workshop is located in Kontiolahti, the company has nationwide operations and is preparing to enter the international market. To combat mass production and culture, Woodartist aims to create furniture products that withstand time and carry a special meaning from one generation to the next.

Olotar buildings are manufactured in Oravisalo located in Rääkkylä, the northern shore of Lake Saimaa. The company’s versatile collection includes sunroom kitchens, pergolas, storage rooms and saunas. The buildings are characterised by their element structures and accessibility. Olotar’s individual design and combinations of the buildings in the company’s product line make it easy to pay attention to the construction site and interior design.

Rakennustoimisto K.Tervo Oy construction company has more than half a century of experience as a constructor in Eastern Finland. The company’s highly proficient staff and contemporary working approaches ensure sustainable development, high-quality implementation and occupational safety. We offer high-quality wood construction and all other types of building to both new and renovation construction projects. In recent years, we have served as the main constructor of several wood-constructed day-care centre projects and as a turnkey constructor, among other things.

The joy of entrepreneurship and construction radiates from the small Liperi municipality. Rakennustoimisto Eero Reijonen Oy is a construction firm established in 1984 that has grown from a small local business into one of the most significant constructors in the county. The company has gained strong foothold as a constructor in industrial, commercial and public construction projects.

Timber Bros Oy is an engineering agency established in 2012 specialised in wood construction. We rely on the benefits of wood construction that prioritizes prefabrication and environmental friendliness. The designing process is founded on producing additional value to the client and solving any challenges that may arise. Our services include engineering design, wood structure design, CAD/CAM woodworking design for the most common CNC machining centres (log house industry, CLT industry, special working) and wood element design.