How Much Does a Full Apartment Renovation Cost in Japan?
When I say “full renovation,” I mean returning a unit to move-in ready condition after a long-term tenant vacates u2014 not a structural overhaul, but a complete cosmetic and functional refresh. The cost range is enormous depending on unit size, condition, and how much you do yourself. Let me give you real numbers from real projects, along with the factors that drive cost up or down.
The Cost Spectrum by Unit Type
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Based on my own renovation projects and contractor quotes collected over the past decade, here are realistic full renovation cost ranges for common Japanese unit types (1K = studio with kitchen; 1LDK = one room plus living/dining/kitchen; 2LDK = two bedrooms plus living/dining/kitchen):
- 1K (20u201330 mu00b2), cosmetic only: u00a5150,000u2013u00a5350,000 hiring out; u00a560,000u2013u00a5120,000 DIY materials only
- 1K (20u201330 mu00b2), cosmetic + kitchen and bathroom upgrade: u00a5350,000u2013u00a5700,000 hiring out
- 1LDK (40u201355 mu00b2), cosmetic only: u00a5250,000u2013u00a5500,000 hiring out
- 1LDK (40u201355 mu00b2), full including kitchen and bath: u00a5600,000u2013u00a51,200,000 hiring out
- 2LDK (60u201380 mu00b2), full renovation: u00a5800,000u2013u00a52,000,000 hiring out
These ranges assume the building structure is sound. If there is water damage, mold, subfloor rot, or other structural issues hiding behind the walls, costs can escalate by u00a5200,000u2013u00a5500,000 or more depending on severity.
Breaking Down a Typical 1K Full Renovation
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To make these numbers meaningful, here is an itemized breakdown from an actual 1K renovation I completed on a 28 mu00b2 unit (1990 wood-frame building), hiring out flooring and wallpaper and doing all other work myself:
- Vinyl flooring removal and replacement (20 mu00b2): u00a582,000
- Wallpaper replacement, walls and ceiling (85 mu00b2): u00a5110,000
- Bathroom deep clean and reseal (DIY): u00a54,500 materials
- Kitchen cleaning and new faucet aerator (DIY): u00a51,200 materials
- Toilet seat replacement (DIY): u00a58,800
- All lighting replaced with LED (DIY): u00a512,000 materials
- Door locks and handles cleaned/adjusted (DIY): u00a50
- Entire unit deep clean (DIY): u00a56,000 supplies
- Touch-up painting, door frames, skirtings (DIY): u00a53,500 materials
- Disposal of old materials: u00a515,000
- Total: u00a5243,000
A full contractor quote for the same unit came in at u00a5385,000. DIY work saved approximately u00a5142,000 in labor, plus my time (approximately 3 full weekend days). Whether that trade-off makes sense depends on your circumstances u2014 see the DIY vs. contractor analysis in en_s078.
What Drives Renovation Costs Up
Several factors consistently push renovation costs toward the top of the range or beyond it:
- Unit bath replacement: Replacing a full unit bath (u30e6u30cbu30c3u30c8u30d0u30b9) costs u00a5400,000u2013u00a5900,000 depending on size and grade. This single item can double the cost of a renovation.
- Water heater replacement: u00a580,000u2013u00a5150,000 installed, depending on type (gas instant vs. tank).
- Mold remediation: If you find mold behind wallpaper or under flooring, professional remediation adds u00a550,000u2013u00a5200,000 plus delay.
- Flooring type upgrade: Replacing vinyl flooring with genuine wood-look flooring (u30d5u30edu30fcu30eau30f3u30b0) can triple the flooring cost per mu00b2.
- Older building surprises: Asbestos-containing materials, undersized electrical panels, degraded plumbing u2014 all require professional remediation and add significant unbudgeted cost.
Cost vs. Return: The Renovation ROI Question
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Before committing to a full renovation, always run the numbers on return. A u00a5700,000 renovation that allows you to raise rent by u00a55,000/month returns that investment in 140 months (nearly 12 years). A u00a5300,000 cosmetic refresh that reduces vacancy from 3 months to 1 month saves u00a5120,000 in lost rent immediately and returns the investment in 2.5 years at u00a510,000/month rent differential.
The most cost-effective renovations are almost always cosmetic refreshes: clean, bright, fresh-smelling units with modern lighting and updated wallpaper rent faster and for more money than tired units, at a fraction of the cost of a full gut renovation. I save major fixture replacements for when existing fixtures are genuinely at end of life u2014 not just because a new one might look nicer. This discipline has kept my renovation costs well below market average while maintaining strong occupancy rates.
Renovation Cost Reduction Checklist (60% Savings Method)
My step-by-step process management template that cut renovation costs by 60% across 3 apartment buildings over 15 years.
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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
