Real Estate- View allLast updated: 2026-03-13

Construction Dispute Resolution in Japan: Defects, Delays, and Cost Overruns

Key Takeaways

  • New homes have a 10-year warranty for structural and waterproofing defects
  • Construction delays causing damages are subject to compensation claims
  • ADR through construction dispute review boards is faster and cheaper than litigation
  • Independent architect inspections are effective for proving defects

Construction disputes cover defects, delays, and cost overruns. Non-conformity remedies include repair, price reduction, damages, and cancellation (Civil Code Art. 562-564). New housing has mandatory 10-year warranty for structural and waterproofing elements (Housing Quality Assurance Act Art. 94-95). Construction Dispute Review Boards (Construction Business Act Art. 25) offer mediation and arbitration with expert participation.

This article provides general legal information and does not constitute legal advice. For specific legal issues, please consult with a qualified attorney.

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