🛠 DIY vs. Contractor in Japan: When to Get Your Hands Dirty

One of the most exciting parts of buying an akiya in Japan is the opportunity to roll up your sleeves and bring a forgotten home back to life.
But how much can you really do yourself—and when should you leave it to the pros?

This guide breaks down what you can (and can’t) DIY in Japan, what jobs require licensed professionals, and how to strike the right balance between budget, skill, legality, and peace of mind.

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🇯🇵 First: Is DIY Common in Japan?

Historically, Japan hasn’t had a strong DIY culture like the U.S. or Europe.
But that’s changing—especially among:

• Akiya buyers
• Younger generations
• Foreigners with renovation experience
• Sustainable living advocates

That said, Japan has strict regulations about certain types of work, especially involving electricity, plumbing, and structural changes.

🧰 What You Can DIY (Legally and Practically)

If you’re comfortable with basic tools—or ready to learn from YouTube and Japanese DIY blogs—these projects are great entry points:

✅ Painting

• Interior walls, ceilings, and even some exteriors
• Easy, cheap, and high visual impact
• Use moisture-resistant or breathable paint for kominka-style walls

✅ Tatami Removal & Replacement

• Old tatami can be removed and replaced with new mats, wood, or vinyl
• Just be sure to check the floorboards underneath for rot

✅ Wallpaper (クロス)

• Removable peel-and-stick or traditional glue wallpaper
• Found easily at stores like Komeri, Cainz, or Nitori

✅ Plastering (漆喰 / shikkui)

• Apply over earthen walls or drywall
• You can DIY with kits from Komeri (we have links!)
• Very rewarding for those who want to preserve traditional finishes

✅ Simple Woodwork

• Building shelves, kitchen counters, low tables, or replacing trim
• Especially satisfying in older homes with exposed beams

✅ Demolition (Non-structural)

• Tear out old flooring, cabinetry, or wall coverings
• Be careful not to remove support beams, insulation, or electrical wiring

⚠️ What You Should Not DIY (Regulated or Risky)

❌ Electrical Work

• All electrical installation in Japan must be done by a licensed electrician (電気工事士)
• This includes outlets, switches, lighting, and panel upgrades

Why? It’s illegal, dangerous, and can void your insurance.

❌ Plumbing Changes

• Minor things like replacing a faucet = okay
• Installing pipes, rerouting drains, or setting up a new toilet?
  Must be done by a licensed plumber (給排水工事士)

❌ Gas Work

• Never attempt to install or repair gas lines or appliances
• Leave all LP and city gas work to the pros (ガス工事業者)

❌ Structural Alterations

• Want to remove a wall or raise a ceiling?
• You’ll need an architect or licensed builder (建築士)

Japan's building codes are strict, especially in earthquake zones.

❌ Septic Systems & Sewage Lines

• Installation of a gappei jōkasō (combined treatment tank) requires certified technicians
• Municipal inspection and approval is often mandatory

💡 When to Use a Hybrid Approach

Many akiya buyers choose to DIY what they can, and then hire specialists for:

• Structural repairs
• Electrical rewiring
• Plumbing setup
• Roof and foundation work

This hybrid model is cost-effective, empowering, and legal.

For example:

• You tear out the old kitchen
• A licensed contractor installs plumbing & outlets
• You build custom shelves and paint the cabinets

💬 Real Stories From the Field

🧱 Sam & Miki – Tochigi Prefecture

“We DIY’d the flooring and replaced the sliding doors ourselves, but brought in a local carpenter for the sagging ceiling beams. It saved us over ¥1 million!”

🎨 Claire – Mie Prefecture

“I painted the whole house myself using breathable clay paint I ordered from Komeri. My contractor was shocked how good it looked.”

🛒 Where to Buy DIY Materials in Japan

• Komeri – Nationwide, best for rural areas
• Cainz – Trendier, more design options
• Daiyu 8 / Nafco – Great for tools and lumber
• Amazon Japan – For specific tools, safety gear, plaster, etc.

Need links? We’ve curated DIY starter kits based on the region and renovation style.

🧭 Final Thoughts: Know When to Step In—and When to Step Back

DIY is deeply rewarding—but not everything should be done solo.
With a bit of planning, you can save money and create a home that truly reflects your vision, while still respecting legal, safety, and cultural norms in Japan.

🏡 Want Help Finding a Fixer That Matches Your Skill Level?

At Old Houses Japan, we help you:

• Assess renovation potential
• Estimate costs for both DIY and professional work
• Connect with local contractors and suppliers
• Source properties perfect for first-time fixer-uppers

📩 Let’s find a DIY-friendly akiya for you »