This is a two‑family residence located in a residential neighborhood of Sapporo. Taking advantage of a site framed on three sides by roads and retaining walls, the design softly screens views from the street while opening broadly toward the park woodland. The living and dining are placed to the south so the family can share views of the trees and natural light. A cruciform spatial organization centered on the kitchen, split‑level (skip‑floor) changes in elevation, and a circulatory plan create a rich living environment where sightlines and presence are gently connected. In addition, the house adopts high thermal insulation and airtightness performance and a ground‑source heat pump for central underfloor heating, providing a comfortable thermal environment suited to Hokkaido’s climate.
Use: Residential
Building footprint: 80.15 m² (24.25 tsubo)
Total floor area: 152.91 m² (46.26 tsubo)
Photography: Koji Sakai (Great Tone Photographs)
Method: New residential construction / conventional timber framing, two stories
Contractor: 株式会社フォレスタ
Electrical: ホサカ電工
MEP: 谷口建築設備
Kitchen / Built‑in furniture / Interior doors: 匠龍木工社
Sheet metal: 熊谷板金工業
Signage: モダンワーク
Heating (system supplier): 日伸テクノ
Exterior joinery: Wooden sashes with double glazing, one‑sided Low‑e; wooden entrance door (m.a.p) / uPVC sashes with triple glazing, one‑sided Low‑e
Heating: Ground‑source heat pump / underfloor central heating
Hot water supply: EcoCute
Insulation: Foundation insulation / cavity wall insulation + additional exterior insulation / roof insulation (Q‑value / 1.18 W/m2K C‑value / 0.4 cm2)
Lighting: LED lighting (Panasonic Corporation)
Flooring: Solid birch and asada hardwood flooring, oil finish (ウッドいのうえ)
Interior walls & ceilings: Zeolite plaster walls; Swedish pine tongue‑and‑groove boarding (株式会社キムラ)
Exterior cladding: Color Galvalume steel, vertical seam
Roofing: PVC sheet waterproofing