noun which may take the genitive case particle 'no'
relatively new; recently built
Used for buildings, especially apartments and houses, that are not brand-new but still fairly new. Often implies a property built within the last few years, typically less than 5–10 years old, and is common in real estate listings.
築浅のマンションを探しています。
I'm looking for a relatively new apartment.
この物件は築浅で、設備もきれいです。
This property is recently built and the facilities are in good condition.
Compound of 築 (ちく, 'building' or 'construction') and 浅 (あさ, 'shallow' or 'recent'), literally meaning 'shallow in construction age'. The exact origin is uncertain, but it is a modern term commonly used in real estate.