Newly Built, New Building, New Construction
noun, verbal noun, の adjective
Something that's newly constructed is something that's newly built.
しんちく
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
新築のマンション以外には住みたくありません。
I don't want to live anywhere other than a new apartment building.
新築の方がアレルギーが出ることが多いって聞いたんですけど、本当ですか？
I've heard that newly built homes tend to cause more allergies, but is that true?
新築の家でも買えば、気分が晴れるよ。
Buying a newly built house will cheer you up.