建て替え

1. Origins, structure, and basic meaning

• Structure: 建て替え is a noun read たてかえ, meaning rebuilding or replacing an old building with a new one. The corresponding verb is 建て替える.
• Basic usage: It can refer to a decision to rebuild an aging building or temporary accommodation used during reconstruction.
  • 老朽化した校舎の建て替えが決まった。 says that a decision was made to rebuild the aging school building; 家の建て替え中は近くの部屋を借りる。 says that a nearby room will be rented while the house is being rebuilt.

2. Common pitfalls and similar expressions

• 建て替えが決まる
  • が決まった states that rebuilding was decided, not that the construction has already finished.
• 建て替え中
  • 中 marks the period during which the house is being rebuilt.
• 建て替え and 改修
  • 建て替え replaces an old building with a new one, while 改修 repairs or improves the existing structure.