Tokyo architects Naoi have completed a three-tiered woodland summerhouse at Japanese holiday spot Nasu Kogen.

Named Tiered Lodge, the split-level house contains a kitchen and dining room on its lower floor, a living room on the middle level and a mezzanine loft and bedroom above.

Large parts of the facade slide open to help cool the house during the warm summer months.

Residents enter the house across a decked balcony and seating area, which leads straight into the lower floor dining room.

Naoi also recently completed a square house with an off-centre courtyard - see it here.

Photography is by Hiroshi Ueda.

Here's some more text from the architects:

Tiered Lodge

For this project, we were commissioned to build a second home for a husband-and-wife couple and their young son. The client requested a simple space that would allow him to take a step back from the daily demands of his busy schedule and help to rejuvenate his body and mind.

The site is located in Nasu Kogen, a well-known summer resort area in Japan that lies at an altitude of 1,000m. Dense groves of deciduous trees can be found nearby, making the area a popular retreat during the sweltering summer months. In the winter, however, temperatures drop below freezing point, and snowfall of up to 80cm has been recorded.

Elevation varies a total of 8m across the entire site running from east to west. Making use of this sloping gradient, we decided to design a residence that would create a sense of continuity with the forest around it.

The first step was to configure two volumes lying next to each other that corresponded to the contours of the terrain, and then to shift these volumes along both the horizontal and vertical axes. Through this process, we were able to create a level surface that could bridge the gap between the cross-section of the lodge and the forest outside it, while also prompting an awareness of changes in the topography of the site.

The space that emerged as a result of this elevation difference and shifts in the surface of the floor showcases subtle variations in the size of each volume, the windows, and the quality of the light in each interior. This structure enabled us to endow what is essentially a single-roomed space with remarkable depth and variation.

The dining and kitchen area, which opens directly onto the outdoor terrace and features an open stairwell, is situated in the southwest corner of the site, making it a fluid space with a distinctively bright, open quality.

The living room situated on the far eastern end of the site, on the other hand, is configured as a zone of peace and quiet where the family can gather around the fireplace.

The loft, located on a mezzanine that lies above the living room, is a suspended space lying in mid-air that offers the inhabitants a commanding, elevated view of the trees outside the lodge.

The sliding doors at the corner of the dining and living area, which can be stowed inside the wall, give the boundaries between the interior and exterior of the house an ambiguous character. For the façade, special efforts were made to preserve the integrity of the forested landscape by installing exterior walls covered in cedar boards and a continuous series of slit windows.

By paying close attention to the possibilities presented by a given site, and giving spatial form to its distinctive qualities, we hope to be able to continue creating buildings that showcase the beauty that belongs to the realm of architecture.

The post Tiered Lodge by Naoi Architecture
& Design Office appeared first on Dezeen.

Open-plan rooms of subtly different proportions are created by an off-centre courtyard in this square house in rural Japan.

The single-storey residence by Tokyo-based Naoi Architecture & Design Office has sliding doors in the exterior walls that open the house up to the surrounding garden.

Grass mounds shelter the house and define the limits of the garden.

A cloak of black timber screens the building at the rear, surrounding an outdoor storage area for bins and bicycles.

Other Japanese houses from the Dezeen archive include one composed of four separate blocks clad in black-stained cedar and another that is split into a series of rooms and platforms - see all our stories about Japanese houses here.

Photography is by Hiroshi Ueda.

Here are some more details from the architects:

Doughnut House

This project was a residential building for a husband-and-wife couple in rural Ibaraki prefecture.

The area surrounding the generously-sized plot was not heavily built up, giving the site a calm sense of privacy without too much of the noise, threat of crime and other stresses associated with the city.

The adjacent areas consisted of a mix of fields and houses, many of which were located on plots of land whose boundaries were not clearly demarcated from each other. With these conditions in mind, we decided to create a home that would consist of “an open space with ambiguous borders and boundaries.”

We started by encircling the perimeter of the site with greenery and embankments in order to demarcate the boundaries of the property in a loose fashion, and built a one-storey house that would be covered and hidden by them.

In this way, we were able to create a site that makes no distinctions whatsoever between its interior and exterior, or between the architecture and its surrounding environment. The embankments serve as a catalyst to produce changes in the landscape visible from the interior, as well as the view from the outside of the house.

The flat, level surface of the site gives the residence a functional layout, while the internal courtyard produces a sensation of depth and fluidity within the house.

Situated at a slight distance from the center of the roof, the courtyard also produces variations in the gradient of the ceiling and configuration of the rooms, giving rise to subtle gradations in the overall spatial properties of the house.

A sense of dialogue between the interior and exterior is reiterated in the internal courtyard and various spaces underneath the eaves of the roof, allowing sunlight and wind to pass through the space.

We also used the various fittings, eaves and dirt floor as tools for manipulating the boundaries within the house, which maintained both a sense of distance from its surroundings as well as a certain relationship to them.

By emphasizing the supporting function of the roof and keeping all the sliding doors and other fittings fully open, the interior of the house acquires a certain spatial intensity. The view from the outside, on the other hand, gives the impression of a wide mantle that covers the entire house.

All of these measures allowed us to ensure that the residence would have a sense of spacious comfort where both nature and architecture are accorded equal value.

In the future, we hope to continue building homes conducive to this sort of luxury and comfort, creating a simple sort of architecture that seeks to actively open itself up to changes in the four seasons, shifts in the weather and the passage of time in a symbiotic relationship with nature, all without having to rely on the latest building technologies, machinery and devices.

Location: Ibaraki Prefecture, Japan
Date of Completion: 2010.8
Principal Use: Private House
Structure: Wooden

Building area: 114.56m2
Total Floor Area: 133.27m2
Design Period: 2009.6 - 2010.2
Construction Period: 2010. 3- 2010.8

Architecture and Landscape Design: Naoi Architecture & Design Office
Structural Engineer: Inoue Structural Engineers

The post Doughnut House by Naoi Architecture
& Design Office appeared first on Dezeen.