敷地は明石市の小高い丘を開発してつくられた住宅地の中にあり、道路からは斜面を背負うようなかたちが特徴的であった。「周囲へは閉じて欲しい」という強い建主の要望を踏まえ、外部をいかに取り込むか、どのような開き方があるかを考え、敷地の可能性を引き出しつつ、住むという行為のひとつひとつが楽しめるような「敷地と共にある」あり方を模索した。
まず土地と建築の中間のような、「地形的な床」を考え、変形したコートハウス状に高低差を設けながら床を配し、ひと続きの伸びやかな領域と、中庭、前庭、裏庭の3つの庭が生まれた。そして領域同士や外部との関係性を整えるために、3つのリング状の白壁（ひとつはコの字状）で全体を統合した。このうち中央の高さ1200㎜の白壁は、高低差のある床との関係によって、1階では垂壁として開口高さを変え、2階では腰壁、裏庭では空中で閉じるリングとなり、質を変えながら室内と外部を繋げている。移動に伴う上り下りや、立つ、座る、寝転ぶという生活行為の視線の上下によって、新たなものが見え隠れしながら風景を積み重ね、場所同士で多様な関係性を庭（敷地）と共に生み出した。
宅地造成された当時の、裏手の石積みのある斜面がこの敷地において特徴的な環境の1つだ。中庭から前庭へ続く石の庭は、斜面から続く敷地を更新しながら引き継ぐことを考えたもので、地形を取り戻すように、街の風景を少しずつ変えていく契機にできればと考えた。建物自体のファサードは窓のない外観であるが、前庭を空地的に開放しながら、跳ね出し部の下から覗く抜けのある中庭、くぐっていくアプローチによって懐の深い建ち方を目指した。その距離を使って見え隠れするようにプライバシーを確保することで、無理せず可能な街への開き方を考えた。
個々の建主の住まい方や敷地特有の環境に応えつつ、暮らしの楽しさや身体性、過去から引き継ぐ街の更新の方法など、普遍性をもつ家を生み出していきたい。（門間香奈子、古川晋也）
A deformed courthouse that accepts slopes and connects gently
The site is located in a residential area developed on a small hill in Akashi City and is characterized by its shape as if it were hugging the slope of the road. The client requested that the house be closed so that it would not be visible from the surrounding area. We considered how to bring the outside in and how to open it up and sought a way to embrace the site so that each act of living could be enjoyed while drawing out the site’s possibilities.
First, we thought of a “floor surface that follows the topography,” something between land and architecture. We arranged the floor in the shape of a deformed courthouse with differences in elevation. A continuous, expansive area and three gardens (courtyard, front garden, and back garden) were created. In order to regulate the relationship between the areas and the outside, three ring-shaped white walls (one in the shape of a U) were used to unify the whole. The central 1,200mm-high white wall changes its opening height as a hanging wall on the first floor, a waist wall on the second floor, and a ring that closes in the air in the backyard, connecting the interior and exterior while changing its quality. The garden (site) and the garden itself create a variety of relationships between places, with new things appearing and disappearing as one moves up and down or as one stands, sits, or lays down.
One of the unique features of the site was the slope with masonry piles at the back of the house when it was developed as a housing site. The stone garden created to continue from the courtyard to the front yard was conceived as a way to connect the area with the slope. I hoped that it would be an opportunity to gradually change the landscape of the city as if to reclaim the topography. Although the facade of the building itself is windowless, we aimed for a building with deep nostalgia through the open front yard, the open courtyard that peeks out from under the leaping part, and the approach that goes through it. By using the distance between the courtyard and the approach, privacy is secured so that it appears and disappears. A way of opening up to the town is considered possible without overdoing it.
While responding to the individual client’s way of living and the site’s unique environment, we hope to create a house with universality, including the enjoyment and physicality of living, and a way of renewing the town inherited from the past. (Kanako Momma, Shinya Furukawa)
【houseAS】
所在地：兵庫県明石市
用途：戸建住宅
クライアント：個人
竣工：2017年
設計：モカアーキテクツ
担当：門間香奈子、古川晋也
構造設計：tmsd萬田隆構造設計事務所
照明：NEW LIGHT POTTERY
施工：岸建工
撮影：中村 絵
工事種別：新築
構造：木造
規模：地上2階
敷地面積：296.91m²
建築面積：90.71m²
延床面積：104.14m²
設計期間：2016.02-2016.11
施工期間：2017.01-2017.11
【houseAS】
Location: Akashi-shi, Hyogo, Japan
Principal use: Residential
Client: Individual
Completion: 2017
Architects: MOCA ARCHITECTS
Design team: Kanko Momma, Shinya Furukawa
Structure engineer: Takashi Manda / tmsd
Lighting: NEW LIGHT POTTERY
Contractor: Kishikenkou
Photographs: Kai Nakamura
Construction type: New Building
Main structure: Wood
Building scale: 2 stories
Site area: 296.91m²
Building area: 90.71m²
Total floor area: 104.14m²
Design term: 2016.02-2016.11
Construction term: 2017.01-2017.11
