Three years ago a typhoon tore a section of roofing off one of my rental units and sent rainwater pouring into two bedrooms overnight. The repair bill came to roughly 480,000 yen, and the tenant was living out of a business hotel for eleven days while I sorted it out. Owning 9 properties for over 15 years, I have now been through five separate natural-event claims u2014 typhoons, one bad flood, and a hailstorm that dented every gutter on a building. Every single one taught me something about doing this faster and cheaper the next time.
Handling storm, flood, or earthquake damage well is not about luck. It is about having a sequence you follow before your brain is even fully working, because the first 48 hours decide whether you pay for a simple repair or a mold remediation project six weeks later.
Check Safety First, Even If It Costs You a Day
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I know the instinct is to run over and start assessing the moment you hear about damage, but I do not let myself or a tenant back into a unit until I know the electrical panel has not been compromised and there is no structural sag in the ceiling. On the flood job, I paid an electrician 15,000 yen for a same-day safety check before anyone reentered, and it was worth every yen u2014 a submerged outlet in the entryway would have been a serious hazard. If there is any standing water near wiring, gas smell, or visible cracking in a load-bearing wall, treat the building as off-limits until a professional clears it, even if that means putting a tenant in temporary housing for a night or two.
Document Everything Before a Single Repair Starts
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This is the step that separates a smooth insurance payout from a fight. I now keep a simple checklist taped inside my toolbox because I have forgotten a step under stress before and it cost me time later.
- Photograph and video every room from multiple angles, including close-ups of cracks, water lines, and debris
- Note the date and approximate time the damage occurred, plus the weather event that caused it
- Keep any damaged materials (a piece of soaked drywall, a cracked roof tile) as physical evidence for at least 30 days
- Write down every phone call with your insurer, including the representative name and reference number
- List out-of-pocket costs immediately, even small ones like a 3,000 yen tarp, since most policies reimburse emergency mitigation expenses
On the hailstorm claim, I had 62 photos before the adjuster even arrived, and the payout was approved in nine days flat. On an earlier, less documented claim, the same insurer took almost five weeks because they kept asking for more evidence I no longer had.
Call Your Insurer the Same Day, Not the Same Week
Most landlord policies in Japan have a notification window, and some reduce your payout percentage the longer you wait to report. I call within hours now, even if I only have partial information. You can always add details to a claim later, but a late first report can undercut the whole thing. Ask specifically whether your policy covers loss of rental income during repairs u2014 mine does, up to 70% of the monthly rent for a maximum of 90 days, and that clause alone has covered two months of a mortgage payment on the affected unit before.
Get at Least Three Repair Quotes and Prioritize Structural Work
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After a major event, good contractors get booked out fast and prices creep up, sometimes 20 to 30% above normal rates for a few months. I always get three quotes minimum, even under time pressure, because the spread has been as wide as 200,000 yen on jobs that looked identical on paper. Structural and water-intrusion issues get fixed first u2014 a compromised roof or foundation crack left alone for even two weeks can turn a 400,000 yen repair into an 800,000 yen one once secondary rot or mold sets in. Cosmetic repairs, like a scuffed wall or a dented gutter that is not actively leaking, can wait until the structural work is confirmed sound.
Keep Tenants Informed at Every Stage
A tenant who hears nothing for four days after a storm starts assuming the worst, and I have had good tenants give notice over exactly this kind of silence. I send a short update within 24 hours of any event affecting their unit, even if the update is just that I am waiting on an adjuster. If they need to relocate temporarily, I handle the hotel booking myself rather than asking them to front the cost and get reimbursed later u2014 that single choice has saved more than one relationship with a long-term tenant.
Rebuild Stronger, Not Just Back to Original Condition
Every time I have repaired storm damage, I have used the opportunity to upgrade something rather than simply restoring it to what it was. After the typhoon, I paid an extra 90,000 yen to have the new roofing section fitted with stronger fasteners rated for higher wind loads. After the flood, I raised the water heater unit onto a 20 centimeter platform so it would clear the flood line I had just measured. These small additions rarely add more than 10 to 15% to a repair bill, but they meaningfully lower the odds of repeating the exact same claim next season.
That is the approach I use across all 9 of my properties: assess safely, document obsessively, call the insurer immediately, get real quotes, keep tenants in the loop, and rebuild a little tougher than before. It will not make a natural event pleasant, but it keeps the damage from turning into a second disaster on top of the first one.
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15 years of landlord experience u00b7 3 apartment buildings u00b7 DIY renovations that saved millions of yen. Browse all articles at diytosan.com
