Grounds
Premises
noun
The land inside of a residence is called the grounds or the premises. Only really big residences have land inside them big enough to be called the "grounds" though.
ていない
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
これは、邸内の写真です。
This is a picture of the grounds.