Inputs
Use measured 延床 (GFA). If unknown, start with 140–220 m² for a small ryokan.
All numbers are rough planning estimates. Get quotes from licensed 建設業者 before committing.
Estimate
Base construction
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Add‑ons & systems
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Soft costs (design/permits)
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Contingency
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| Component | Unit cost | Qty | Line total (JPY) |
|---|---|---|---|
| Subtotal (hard + add‑ons) | – | ||
| Soft costs (design/permits) | – | ||
| FF&E / Furnishings | – | ||
| Misc. approvals | – | ||
| Contingency | – | ||
| Total (JPY) | – | ||
| Total (USD) | – | ||
Tip: toggle scope/add‑ons and adjust unit costs by clicking the unit‑cost cells. All calculations run locally in your browser.
Unit‑Cost Assumptions
These defaults reflect recent bids in Japan (rural–regional markets). Adjust as needed for your contractor, building condition, or compliance path.
Restore defaults
| Item | JPY per m² or fixed |
|---|