Black timber and zinc house with sauna sits next to a Finnish lake

A house by Studio Puisto in Finland, sits between a lake and a dense spruce forest and is clad in black-oiled wood and topped by sloping zinc roofs.

Called Three Square House, the house in Southern Savonia is made up of three interlocking volumes, with a central building flanked by two smaller spaces.

3 Three Square House by Studio Puisto

These auxiliary rooms house a garage, storage and a sauna.

Between the garage and the main house a corner of raised wooden decking with a sunken tub connects to a walkway down to a jetty out into the lake.

3 Three Square House by Studio Puisto

Studio Puisto split the elevations horizontally with a 2.3-metre high datum, cladding the bottom half in timber and the upper half with zinc panels.

Facing the line of spruce trees, smaller openings create darker spaces that are intended to evoke the atmosphere of the forest.

3 Three Square House by Studio Puisto

Facades facing the lake are more open, with large areas of glazing that wrap around living spaces.

Following a gentle slope on the site, Three Square House sits dug-in towards the forest and slightly raised where it overlooks the water.

3 Three Square House by Studio Puisto

Rooms follow these gradients, with private and darker bedrooms at the back and lighter communal spaces at the front.

Instead of doors, sliding glass doors can separate or open up the rooms.

3 Three Square House by Studio Puisto

The main building is split diagonally by a central core, maximising the available space in the triangular areas either side.

Enclosed by dark-wood lined walls, this core contains a bathroom, walk-in wardrobe and storage

3 Three Square House by Studio Puisto

The core's perimeter houses a wall of kitchen appliances and cabinets.

A triangular living space, defined by this kitchen wall and a corner section of glazing, has a wood-burning stove suspended just above the floor.

3 Three Square House by Studio Puisto

Dark wood floors and black ceilings also contribute to the feeling of intimate, shadow-filled spaces.

In the sauna paler wood has been used, along with high-level windows that allow light in while maintaining privacy.

3 Three Square House by Studio Puisto

"The design of the building's spaces is not afraid of darkness but has turned it into a strength," said Studio Puisto.

"The building has places with a huge amount of light and places where you can curl up into the shadows, always according to the situation and mood."

3 Three Square House by Studio Puisto

Previous projects by Helsinki-based Studio Puitso include a neighbourhood sauna located in a former industrial building, and a home in the Netherlands clad in blackened timber.

Photography and video is by Marc Goodwin.


Project credits:

Architects: Studio Puisto Architects
Partners: Mikko Jakonen, Emma Johansson, Sampsa Palva, Heikki Riitahuhta, Willem van Bolderen
Team members: Pauliina Kujala
Lighting design: Lighting Design Collective
Contractor: Rakennuspalvelu Ri-Li Oy
Roof and facade zinc work: Peltipeite
Walnut surfaces and fixed furniture: TM Team KY

More images and plans

Site plan of 3 Three Square House by Studio Puisto
Site plan
Floor plan of 3 Three Square House by Studio Puisto
Floor plan
Section of 3 Three Square House by Studio Puisto
Section
Full detail at 1:20 of 3 Three Square House by Studio Puisto
Building detail
Construction detail drawing of 3 Three Square House by Studio Puisto
Construction detail drawing
3 Three Square House by Studio Puisto
3 Three Square House by Studio Puisto
3 Three Square House by Studio Puisto
3 Three Square House by Studio Puisto
3 Three Square House by Studio Puisto
3 Three Square House by Studio Puisto
3 Three Square House by Studio Puisto