Why such wide ranges?

Old Japanese houses vary enormously — size, access, how much hidden damage there is, and how far the nearest trades are. The ranges are typical for an older wooden house; a survey narrows them quickly.

Often. Many towns subsidise earthquake strengthening for homes built before 1981, and some offer akiya renovation grants — usually for people who'll live in the house. We check what applies to yours.

How does project management work?

We scope the work, get quotes from vetted trades, manage the build and send weekly photos. Trades are billed at cost; our fee is 10–15% of the project.

無料ツールFree tools

Renovation cost calculator.

Choose the work an older Japanese house needs and see a realistic range — before you buy, or before you start.

Repairs

Gutter clearing & small fixes 雨どい清掃・補修
¥15,000 – ¥40,000
Plumbing leak or blocked drain 水漏れ・詰まり
¥15,000 – ¥60,000
0
Partial roof tile repair 屋根瓦の部分補修
¥30,000 – ¥150,000 · Scaffolding extra if needed
Tree pruning & garden clear-up 庭木の剪定・草刈り
¥15,000 – ¥60,000
Termite treatment シロアリ駆除
¥100,000 – ¥250,000 · Usually lasts about 5 years
Water heater replacement 給湯器交換
¥150,000 – ¥400,000

Rooms

Tatami re-covering (omotegae) 畳の表替え
¥5,000 – ¥12,000 per mat
0
Shoji / fusuma re-papering 障子・襖の張替え
¥3,000 – ¥8,000 per panel
0
Walls repapered or repainted クロス張替え・塗装
¥40,000 – ¥80,000 per room
0
Floor replaced 床の張り替え
¥100,000 – ¥250,000 per room
0
New toilet トイレ交換
¥150,000 – ¥400,000
0

Bigger jobs

New kitchen キッチン交換
¥500,000 – ¥1,500,000
New bathroom 浴室交換
¥600,000 – ¥1,500,000
0
Whole roof re-tiled 屋根の葺き替え
¥1,200,000 – ¥3,000,000
Exterior walls repainted 外壁塗装
¥800,000 – ¥1,500,000
Earthquake strengthening 耐震補強
¥1,000,000 – ¥2,500,000 · Many towns subsidise this for older homes

Clearing and demolition

Clearing the contents 家財整理
¥150,000 – ¥500,000 · Depends on how full the house is
Demolition (wooden house, about 100 m²) 解体（木造・約100㎡）
¥1,000,000 – ¥2,500,000 · Land tax can rise once the house is gone

Estimated total

¥0

Choose the work on the left to build an estimate.

Ballpark ranges for an older wooden house. Remote areas, access and condition change prices; every job is quoted with photos before anything starts.

Get real quotes with photos

Estimated total

¥0

Breakdown

Restoring a kominka: what to expect Inspection before you buy

Questions

Why such wide ranges?: Old Japanese houses vary enormously — size, access, how much hidden damage there is, and how far the nearest trades are. The ranges are typical for an older wooden house; a survey narrows them quickly.
Are there subsidies?: Often. Many towns subsidise earthquake strengthening for homes built before 1981, and some offer akiya renovation grants — usually for people who'll live in the house. We check what applies to yours.
How does project management work?: We scope the work, get quotes from vetted trades, manage the build and send weekly photos. Trades are billed at cost; our fee is 10–15% of the project.

お問い合わせ

Want real quotes?

We get itemised quotes with photos from trusted local contractors, and manage the work for you.

Project management Book a call

無料ツールFree tools

Renovation cost calculator.

Choose the work an older Japanese house needs and see a realistic range — before you buy, or before you start.

Repairs

Gutter clearing & small fixes 雨どい清掃・補修
¥15,000 – ¥40,000
Plumbing leak or blocked drain 水漏れ・詰まり
¥15,000 – ¥60,000
0
Partial roof tile repair 屋根瓦の部分補修
¥30,000 – ¥150,000 · Scaffolding extra if needed
Tree pruning & garden clear-up 庭木の剪定・草刈り
¥15,000 – ¥60,000
Termite treatment シロアリ駆除
¥100,000 – ¥250,000 · Usually lasts about 5 years
Water heater replacement 給湯器交換
¥150,000 – ¥400,000

Rooms

Tatami re-covering (omotegae) 畳の表替え
¥5,000 – ¥12,000 per mat
0
Shoji / fusuma re-papering 障子・襖の張替え
¥3,000 – ¥8,000 per panel
0
Walls repapered or repainted クロス張替え・塗装
¥40,000 – ¥80,000 per room
0
Floor replaced 床の張り替え
¥100,000 – ¥250,000 per room
0
New toilet トイレ交換
¥150,000 – ¥400,000
0

Bigger jobs

New kitchen キッチン交換
¥500,000 – ¥1,500,000
New bathroom 浴室交換
¥600,000 – ¥1,500,000
0
Whole roof re-tiled 屋根の葺き替え
¥1,200,000 – ¥3,000,000
Exterior walls repainted 外壁塗装
¥800,000 – ¥1,500,000
Earthquake strengthening 耐震補強
¥1,000,000 – ¥2,500,000 · Many towns subsidise this for older homes

Clearing and demolition

Clearing the contents 家財整理
¥150,000 – ¥500,000 · Depends on how full the house is
Demolition (wooden house, about 100 m²) 解体（木造・約100㎡）
¥1,000,000 – ¥2,500,000 · Land tax can rise once the house is gone

Estimated total

¥0

Choose the work on the left to build an estimate.

Ballpark ranges for an older wooden house. Remote areas, access and condition change prices; every job is quoted with photos before anything starts.

Get real quotes with photos

Estimated total

¥0

Breakdown

Restoring a kominka: what to expect Inspection before you buy

Questions

Why such wide ranges?: Old Japanese houses vary enormously — size, access, how much hidden damage there is, and how far the nearest trades are. The ranges are typical for an older wooden house; a survey narrows them quickly.
Are there subsidies?: Often. Many towns subsidise earthquake strengthening for homes built before 1981, and some offer akiya renovation grants — usually for people who'll live in the house. We check what applies to yours.
How does project management work?: We scope the work, get quotes from vetted trades, manage the build and send weekly photos. Trades are billed at cost; our fee is 10–15% of the project.

お問い合わせ

Want real quotes?

We get itemised quotes with photos from trusted local contractors, and manage the work for you.

Project management Book a call