DEN is the largest small house builder in Finland.

We make home dreams a reality

Finnish DEN brings together the best house brands in the single-family house industry and people with a common goal: making home dreams come true.

DEN consists of turnkey single-family house pioneer Designtalo, the naturally best log homes of Finnlamelli and our collaboration with K-Rauta, Ainoakoti.

By listening to our customers, we’ve developed house lines which take into account all the needs and wishes of today’s house builders. Designed by skilled architects, the prefabricated house models adapt to individual need based on the customer’s choices.

Our houses are designed and manufactured at our own factories in Nivala and Alajärvi, and implemented all the way to the turnkey phase on-site. Customer service and sales are at the customer’s side throughout the building project. This way, the whole implementation is at the hands of ourselves and our long-term partners.

More than 30 years of experience in designing and building single-family houses

DEN was built on the sturdy foundation of its strong brands.

Designtalo, formerly Pohjolan Design-Talo, was established in 1989. Designtalo brought turnkey homes to the Finnish market and soon achieved market leadership as a single-family house builder. Designtalo is also a pioneer in ecological single-family houses: the first energy-efficient and passive houses were introduced in 2009 and 2011, and in 2019, Designtalo was the first to launch the fully carbon-neutral ECO2 concept.

Finnlamelli was established in 1995, and its roots are in the long tradition and expertise of the Finnish sawmill and log house industries. Finnlamelli has become the leading developer of ecological log house construction in Finland as well as internationally. In addition, Finnlamelli builds ecological schools and kindergartens with high indoor air quality.

Our mission is to make dreams come true one home at a time

DEN has solidified its position as the market leader and pioneer in turnkey wooden and log homes. It’s time to move to the next phase of growth and development.

We develop products and services to make life in the homes we built easier and more comfortable. We serve our customers in various home-related needs, longer and more extensively, throughout the home’s lifecycle.

Our operations are affected by many mega trends which we take into account in planning our operations. These include demographical changes, such as urbanisation and aging populations, climate change, resource scarcity and technologisation. We always aim to operate as profitably and efficiently as possible, with the highest quality, taking into account the climate and the environment. We make use of data to achieve more efficient management and more sustainable results.

Our goals for the strategy period 2021–2025:

  • To provide the best customer experience and to be customers’ number one choice
  • To be the most desired partner for our suppliers and networks
  • To continue developing sustainability extending to all of our operations
  • To boost the industry’s shift to carbon neutrality
  • To be a desired employer and a work place with an inspiring culture


Our strong values guide us to act right towards each other, our customers, and anyone else.

Our mutually selected values are: appreciation, courage, sustainability and happiness.


At DEN, sustainability is one of our fundamental values and a central element of our strategy. It’s part of all our activity, from planning and procurement up until the end of the lifecycle of the houses we build.


The CEO of DEN Finland Oy is Otto Tarkiainen and members of the management team are

The CEO of DEN Group is Mika Perkiö.

The CEO of DEN Group subsidiary Talliosake Oy is Petri Nieminen.