Housing Day (Jutaku Day)

What is Housing Day?

June 25th is "Housing Day" (Jutaku Day) in Japan. It was established in 1978 by the National Federation of Construction Workers' Unions (Zenkensoren). The date was chosen to honor the birthday of the great Spanish architect Antoni Gaudí (June 25, 1852). The day aims to raise awareness of the skills of local construction craftsmen—carpenters, plasterers, and others—and to encourage people to think about the importance of home-building and to seek inspections and advice about their homes.

Gaudí's birth and the historical significance of craftsmanship

The choice of Gaudí's birthday for Housing Day reflects a respect for both "humanity" and "skill" in architecture.

• Antoni Gaudí's legacy: Gaudí, who designed the Sagrada Família in Barcelona, was a pioneer in incorporating natural forms into architecture. His philosophy that "nature is the textbook written by God" remains one of the logical roots of today's environmentally harmonious housing.
• Connecting craftsmen and residents: On Housing Day, events such as "knife sharpening" services and "housing consultation sessions" are held across the country. These efforts aim to rebuild the trust with local craftsmen that once supported community formation.

Scientific facts about how our living environment affects our minds and bodies

The quality of the home we live in has a direct scientific effect on our health and productivity.

• The relaxing effect of wood scents: Compounds called phytoncides, found in woods like cedar and cypress, are known to calm the autonomic nervous system and scientifically lower levels of the stress hormone cortisol.
• Light and circadian rhythm: The way a home is designed for natural light matters. Bringing appropriate sunlight indoors helps regulate our internal body clock (circadian rhythm), promoting nighttime melatonin secretion and improving sleep quality.

Interesting facts about housing

• "1/f fluctuation" and wood grain: The natural patterns found in wood grain contain "1/f fluctuation"—a balance of regularity and unpredictability. Looking at this pattern is known to guide brain waves into a relaxed alpha-wave state.
• Insulation performance and longevity: Improving a home's insulation and keeping indoor temperatures stable not only prevents heat shock but also scientifically reduces the risk of respiratory and cardiovascular disease. A "warm home" is one of the important factors for a long life.
• How "color" changes perceived temperature: Depending on the colors of wallpaper and curtains, perceived temperature can vary by 2 to 3°C between warm tones like red and cool tones like blue. This is an intelligent application of color psychology to reduce energy consumption.
• Predictions for the Sagrada Família's completion: Thanks to IT and 3D printing technologies, completion by 2026—the 100th anniversary of Gaudí's death—has become a realistic possibility, marking a historic turning point where modern technology fulfills a century-old craftsman's dream.
• Houses "breathe" too: Modern homes are required by law to have 24-hour ventilation. Proper ventilation removes substances that cause sick house syndrome and supplies fresh oxygen to the brain, functioning as a vital life-support system.

Ideas for spending Housing Day

• On June 25th (Housing Day), check just one "issue" around your home—a torn screen door or a leaky faucet, for example. Confirming and addressing such issues is a smart way to restore the "foundation of life" that may have gotten neglected amid the busyness of the new fiscal year.
• Bring "natural materials" into your room. Just placing a small houseplant or wooden item sends signals of rest to the brain—an effective form of self-care to reduce stress during the rainy season.
• Watch a documentary or browse a book about Gaudí's work. Seeing how function and beauty merge is a great way to imagine your ideal lifestyle and refresh your intellectual curiosity.
• Look into local construction companies and craftsmen. Knowing which "neighborhood experts" you can rely on when needed is a smart investment in future peace of mind.

Tending to the sanctuary that is your home brings quiet peace to your mind and builds an unshakable foundation for tomorrow's energy

June 25th is a day to express gratitude for the "place" where we spend our daily lives, and to appreciate the "craftsmanship" that supports it. Just as Gaudí's passionate architecture continues to move people, your own home is also a precious partner that colors and protects your life. Are you tired from battles in the outside world since the new fiscal year began? Today, take a little extra care in tidying the corner of the room that relaxes you most. A comfortable space sharpens your mind and enriches your creativity—the best kind of supplement there is. With a well-tended home, let's step forward into a richer tomorrow.