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This is a Exploratory Action Research study.

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September 10, 2025Open Access

Exploratory Action Research on Renovating Room Plans for Vacant Apartments Based on the Living Conditions of Young Working Households and Real Estate Data

Key Points

Renovating apartments may improve occupancy rates, showing promise for attracting young working households.
Significant correlations were found between cohabitants and apartment layouts, with R2 values ranging from 0.26 to 0.50.
Estimates indicate that expected rents after renovation could rise to 80,917 yen, encouraging investment in layout changes.
The demand for premium layouts suggests that a 1LDK model is a viable solution to current vacancy issues.

Abstract

ABSTRACT This study examines practical layout renovations based on actual living and unit specifications. In Osaka City, significant correlations were found between the number of cohabitants and the apartment layout ( R 2 = 0.50), floor area (0.32), and rent (0.26) for young working households. The pre‐renovation unit featured a 2K layout, a 40.5 m 2 floor area, and a monthly rent of 71 000 yen—specifications that did not align with the typical needs of any household type, potentially leading to vacancies. However, demand was observed in the premium market segment, suggesting that converting to a 1LDK layout could be a viable solution. The estimated monthly rent before renovation was 69 904 yen, while the expected rents after renovation were 72 741 yen (1DK) and 80 917 yen (1LDK). All three renovation proposals received applications, demonstrating the effectiveness of this approach.

Exploratory Action Research on Renovating Room Plans for Vacant Apartments Based on the Living Conditions of Young Working Households and Real Estate Data

Key Points

Abstract

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