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Writer's pictureDavid Lake

Home Maintenance Checklist for Japanese Houses: Keep Your Property in Top Shape

Owning a home in Japan is a rewarding experience, whether you're drawn to the modern aesthetics of Tokyo apartments or the rustic charm of countryside akiya (abandoned houses). But like any property, Japanese homes require regular upkeep to stay in good condition. With Japan’s unique weather patterns, aging infrastructure, and cultural building styles, maintaining a home here comes with its own set of challenges.


To help you stay on top of things, we’ve created a comprehensive Home Maintenance Checklist to ensure your property remains in top shape year-round.


1. Roof and Gutters: Essential for Rainy Weather





Roof Inspections

Japan is known for its rainy season (tsuyu) and typhoons, which can take a toll on roofs. Inspecting your roof regularly for damage is critical, especially if you’ve purchased an older akiya home.

  • What to Look For: Cracks, missing tiles, or damaged shingles.

  • How Often: Twice a year (spring and fall), and after any major storm.

  • Fixes: Replace broken tiles or shingles immediately to prevent water leaks and potential interior damage.


Gutter Cleaning

Blocked gutters can lead to water overflow, damaging walls and foundations. Japan’s typhoons can cause debris buildup in gutters, so this is an important task.

  • What to Do: Remove leaves, dirt, and any other debris from gutters and downspouts.

  • How Often: Quarterly or after heavy storms.

  • Tip: Installing gutter guards can reduce maintenance needs.


2. Tatami and Flooring Care: Traditional and Modern Needs




Tatami Mat Maintenance

Tatami is a quintessential part of traditional Japanese homes, but it requires special care to prevent mold and wear.

  • What to Do: Air out tatami mats regularly by lifting them up or moving them outside to prevent moisture buildup.

  • How Often: Every few months, depending on humidity levels.

  • Tip: Rotate tatami mats every six months to prevent uneven wear.


Wooden Flooring

Whether you're living in a modern apartment or a traditional home, Japanese homes often feature wood flooring.

  • What to Look For: Scratches, scuffs, and moisture damage.

  • How Often: Weekly sweeping and mopping with a damp (not wet) mop.

  • Tip: Avoid using harsh cleaners on wooden floors, as they can strip the finish.


3. Pest Control: Keep Bugs at Bay




Termite Inspections

Termites are a common problem in Japan, especially in older wooden homes. An unchecked infestation can lead to serious structural damage.

  • What to Do: Have a professional inspect for termites annually.

  • Signs to Look For: Hollow-sounding wood, mud tubes, and discarded wings.

  • Tip: If you’re buying an akiya, have a termite inspection as part of the purchase process.


Insect and Rodent Prevention

Japan’s humid summers can attract insects like cockroaches and rodents, especially in rural areas.

  • What to Do: Seal cracks in windows and doors, keep food stored securely, and ensure trash is tightly sealed.

  • Tip: Installing insect screens (amido) on windows is common in Japan and can help keep bugs out.


4. Plumbing and Water Systems: Avoid Moisture Issues


Inspect for Leaks

Older homes, in particular, may have outdated plumbing that’s prone to leaks. Leaks can lead to mold, which is a common issue in Japan’s humid climate.

  • What to Look For: Dripping faucets, stained ceilings, and water spots on floors or walls.

  • How Often: Check monthly, especially during the rainy season.

  • Fixes: Replace damaged pipes and fittings immediately to avoid further damage.


Water Heater Maintenance

If your property has a traditional Japanese bath (ofuro), you’ll want to ensure the water heater is functioning properly.

  • What to Do: Have a professional inspect your water heater annually to ensure it’s in good working order.

  • Tip: For onsen-style homes or rural properties, inspect natural water heating systems for efficiency.


5. Walls and Foundation: Safeguard Against Seismic Activity


Crack Inspections

Japan is prone to earthquakes, so checking your walls and foundation for cracks is crucial.

  • What to Look For: Cracks in the foundation or walls, especially around windows and doors.

  • How Often: After major seismic activity and once a year.

  • Fixes: Hire a professional to repair large cracks, as they can compromise the structural integrity of the home.


Earthquake Proofing

Older homes, particularly akiya, may not meet modern earthquake standards. Consider retrofitting your home to withstand earthquakes.

  • What to Do: Secure large furniture, retrofit with earthquake-resistant materials, and install braces for added stability.

  • Tip: Some local governments offer subsidies for earthquake-proofing older homes.


6. Ventilation and Mold Prevention: Essential in Japan’s Climate


Ventilation Systems

Good ventilation is crucial in Japan’s humid climate to prevent mold, especially during the rainy season.

  • What to Do: Open windows regularly, use exhaust fans in kitchens and bathrooms, and install dehumidifiers where necessary.

  • How Often: Regularly throughout the year, especially in summer.


Mold Prevention

Mold can be a significant issue in homes across Japan due to high humidity levels.

  • What to Look For: Black or green spots on walls, ceilings, or in bathrooms.

  • How Often: Inspect for mold monthly, particularly during summer.

  • Tip: Use moisture absorbers or install a moisture barrier if you’re in an especially humid area.


7. Heating and Cooling: Staying Comfortable Year-Round


Air Conditioning Units (AC)

Japan’s summers can be sweltering, so maintaining your air conditioning unit is essential for comfort.

  • What to Do: Clean or replace air filters regularly and check that the system is cooling efficiently.

  • How Often: Before summer starts, and monthly cleaning during heavy use.

  • Tip: Consider using an energy-efficient aircon to reduce electricity bills.


Kerosene Heaters & Kotatsu

In colder areas, kerosene heaters or traditional kotatsu tables (heated tables with blankets) are common.

  • What to Do: Check kerosene heaters for leaks and ensure proper ventilation when in use.

  • Tip: If using a kotatsu, remember to clean the blanket regularly to avoid dust buildup.


8. Electrical Systems: Safety First


Wiring Check

Older homes may have outdated electrical systems that can’t handle modern appliances. This is especially important if you’re planning renovations.

  • What to Do: Have an electrician inspect your wiring and upgrade it if necessary.

  • How Often: Every few years or before major renovations.


Breaker Panel Maintenance

Japan experiences power outages, especially during typhoons, so understanding your breaker panel is essential.

  • What to Do: Make sure your breaker panel is clearly labeled and functioning.

  • Tip: Consider installing surge protectors to protect appliances from power surges.


9. Exterior Maintenance: Keep It Looking Good


Exterior Walls and Paint

The exterior of your home, especially in rural or coastal areas, will take a beating from the elements.

  • What to Do: Inspect for peeling paint, cracks, and signs of water damage.

  • How Often: Annually.

  • Tip: Repainting every 5-10 years can protect the structure from moisture.


Garden and Landscape

Japanese homes often feature gardens, which require regular care.

  • What to Do: Trim trees and shrubs, check for overgrown roots that could damage foundations, and maintain paths and driveways.

  • Tip: Keeping a Japanese-style garden can be meditative and is considered an art form. Look into traditional pruning techniques if you're interested.


Conclusion: A Well-Maintained Japanese Home is a Happy Home

Owning a home in Japan, especially an akiya, can be an incredibly rewarding experience, but it does come with responsibilities. From regular roof inspections to pest control and mold prevention, staying on top of maintenance ensures that your property remains a valuable, comfortable place to live. Plus, many of these tasks help preserve the traditional features that make Japanese homes so special.


By following this maintenance checklist, you’ll not only protect your investment but also keep your home safe and enjoyable for years to come!

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