1.
renovation, rebuilding, reconstruction
To significantly modify or rebuild a building's structure, often involving major changes to the layout or basic framework.
古民家を改築してカフェにした。
We renovated an old traditional house and turned it into a café.
駅の改築工事が進んでいる。
The station renovation work is progressing.
家を改築するか建て替えるか迷っている。
I'm deciding whether to renovate or completely rebuild the house.
USAGE: 改築 refers to significant structural changes to a building. It differs from 改装 (interior renovation) and 修繕 (repairs).
COMMON COLLOCATIONS:
- 改築工事 (renovation work)
- 改築費用 (renovation costs)
- 家を改築する (to renovate a house)
DISTINCTION FROM SIMILAR TERMS:
- 新築 - new construction (building from scratch)
- 改築 - renovation with major structural changes
- 改装 - interior renovation, remodeling
- 増築 - building an addition/extension
- 修繕 - repairs, fixing damage
- 建て替え - complete rebuild (tear down and build new)