Official Residence
noun
A government residence is one that is assigned to government officials. That means it's their official residence, and it goes on all their official paperwork.
かんてい
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
首相官邸ツアーに参加しました。
I participated in a tour of the Prime Minister’s official residence.