Create Lemon Inc. (Headquarters: Yamagata City, Yamagata Prefecture, Representative Director CEO: Tomokazu Oba) conducted an "Independent Survey on Housing Warranties" based on publicly available information as of 2025, targeting 15 custom home builders headquartered within Yamagata Prefecture.
The survey revealed a maximum difference of 40 years in structural and waterproofing warranties among the companies. Furthermore, when their "Longest 55-Year Warranty" was offered to existing customers (OB customers), it recorded an extremely high response rate of approximately 18%. This highlights the growing interest not just in "building" a house, but also in "maintaining it for a long time."
▼ Details of the Longest 55-Year Warranty here: https://createlemon.jp/warranty
Survey Background: The "Longevity of Housing" and the Importance of Warranties Amidst the trend of extending housing lifespan due to rising construction material costs and environmental awareness, interest in "warranty systems" is growing. To maintain residents' Quality of Life (QOL) over the long term, "warranty systems" that cover future repair risks are indispensable, not just the performance at the time of new construction. Against this backdrop, we investigated the current state of housing warranties in Yamagata Prefecture.
Independent Survey of 15 Companies in Yamagata Prefecture: Clear "Years of Warranty" Discrepancy According to Create Lemon's independent survey, the distribution of "structural and waterproofing warranties" and "equipment warranties" among major custom home builders in Yamagata Prefecture is as follows:
### [Structural and Waterproofing Warranty Period Distribution] * Maximum 60 years: 5 companies * Maximum 30 years: 3 companies * Maximum 20 years: 1 company * Others (10 years, etc.): 6 companies
※ It was found that there is a gap of up to 40 years.
FACT BOX
- Source: PR TIMES
- Category: Survey