Introducing Senior Welfare Facility — Conversion, Extension, and Refurbishment of an Existing Building | Ohtoku Care Center, an example of Architect / Design office facility architecture in 302, Zeniya Honpo Main Building, 14-6 Ishigatsujichō, Tennōji-ku, Osaka by Yoshihiro Yamamoto Architects Associates.
Conversion of a vacant building of more than 35 years into a senior-care facility tailored to contemporary needs.
Senior Welfare Facility — Conversion, Extension, and Refurbishment of an Existing Building | Ohtoku Care Center
The new wing is designed in conjunction with the existing building. The uppermost portion accommodates the elevator overhead.
A large new window was installed on the north elevation to meet the stringent daylighting requirements of a care facility.
Ground-floor day service center. Flooring is solid oak; walls are painted.
The goal is a warm, well-aged interior that feels more homelike the more it is used.
A large volume utilizing the entire existing building. Fully opening folding doors were installed to enable integrated use with the courtyard.
A courtyard lush with greenery created by arranging the existing and new wings in a staggered formation.
View of the existing wing from the courtyard.
Second-floor short-stay accommodation. Common living room and corridors were planned integrally while satisfying regulatory requirements.
The second floor was originally a warehouse, so ceiling heights are low. Although habitability was a concern, the result is an unexpectedly intimate space.
Short-stay rooms utilizing the existing structure.
Short-stay rooms in the addition. The courtyard can be viewed from the windows.
Third-floor common living room.
Room entrance signage. Simple house-shaped signs were designed to align with the building concept.
First-floor bathing facility shared by the day service and short-stay units. Private baths were fabricated from locally sourced Yoshino hinoki (Japanese cypress).
Introduction of insulation and high-performance glazing has enabled certification as a ZEB demonstration project.
Various events, such as fireworks viewing, are held on the wood deck.
Yohei Sasakura
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This project converts a vacant building of more than 35 years into a senior-care facility suited to contemporary needs. Many provincial office buildings constructed in the Shōwa era suffer from vacancy and deterioration. In metropolitan areas, such buildings can often be regenerated through renovation, but in regions with weakened economies demand for office space has declined, making the problem acute. At the same time, demand in the long-term care sector — for example for short-stay beds to relieve caregiver burden and as emergency capacity — is increasing. Because private operators generally cannot access construction subsidies or tax incentives, it is difficult for such services to be viable as stand-alone businesses, and a nationwide shortage of facilities persists.
Rather than pursuing new construction, this project reduced initial costs through refurbishment and extension of an existing building. By making a nearby hospital the operating body we improved operational efficiency, enabling the establishment of a short-stay facility that would have been difficult to sustain independently. A building that was once virtually a ruin has been reborn through conversion and is now actively used by many clients as a regional medical and care hub. Use / Day service center · Short‑stay (respite care) Structural system / Steel‑frame construction, 3 storeys + Steel‑frame construction, 3 storeys Site area / 170 tsubo [570 m²] Design area / 227 tsubo [750 m²] Architectural and building‑services design supervision / Yoshihiro Yamamoto [YYAA] Structural design supervision / Oishi Contractor / Tani Construction Signage planning / Mirako Matsumiya Signage fabrication / Masakazu Tsuchiya Hinoki (Japanese cypress) bath fabrication / Greenforest
Rather than pursuing new construction, this project reduced initial costs through refurbishment and extension of an existing building. By making a nearby hospital the operating body we improved operational efficiency, enabling the establishment of a short-stay facility that would have been difficult to sustain independently. A building that was once virtually a ruin has been reborn through conversion and is now actively used by many clients as a regional medical and care hub. Use / Day service center · Short‑stay (respite care) Structural system / Steel‑frame construction, 3 storeys + Steel‑frame construction, 3 storeys Site area / 170 tsubo [570 m²] Design area / 227 tsubo [750 m²] Architectural and building‑services design supervision / Yoshihiro Yamamoto [YYAA] Structural design supervision / Oishi Contractor / Tani Construction Signage planning / Mirako Matsumiya Signage fabrication / Masakazu Tsuchiya Hinoki (Japanese cypress) bath fabrication / Greenforest
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