築
ち
く
Meanings
1
... years since construction; ... years old (of a building)
Prefix used before a number of years to indicate the age of a building since its construction. Common in real-estate ads, e.g. 築10年 means '10 years old'.
It's a 5-year-old apartment building.
2
built in ...
Suffix used after a year or era name to indicate when a building was constructed. Often seen in property descriptions, e.g. 1980年築 means 'built in 1980'.
This house was built in 1990.
Usage patterns
- 築〈数〉年... years old (of a building), counting from construction
This condo is 10 years old.
- 〈時〉年築built in <year>
This apartment was built in 1990.