The site is located in a densely built residential area in the city center, characterized by a narrow, irregularly shaped lot fronting a north-side road and enclosed by buildings on three sides. Capitalizing on the sole unobstructed southwest-facing view—an adjacent garden—the design incorporates an external courtyard and deck terrace to enhance the living environment while shielding the interiors from surrounding sightlines. This three-story wooden structure employs the SE (Structure Engineering) method, optimizing structural strength and spatial openness.
Despite the dense urban context, the house provides a living environment where natural light and ventilation permeate, tailored for a dual-income couple with a passion for music, and their aunt who lives with them along with their beloved cat. The residence is a fully separated two-generation home, ensuring privacy and comfort for all occupants.
Location: Toshima-ku, Tokyo
Household composition: Couple + child / aunt + pet cat
Completion: January 2018
Structural system and scale: Timber, 3-storey (SE construction method)
Site area: 94.65 m² (28.63 tsubo)
Building footprint (building area): 56.77 m² (17.16 tsubo)
Total floor area (gross floor area): 128.08 m² (38.74 tsubo)
Design and supervision: Archiplace (Architectural Office Archiplace)
Structural engineering: NCN (N.C.N.)
Contractor: Shoyo
Notes: Hydronic (hot-water) underfloor heating (TES); cavity-fill insulation with ventilated construction method