タク, け, たか, たけ, や, やけ
home, house, residence, our house, my husband
JLPT3 G6 S6 F357
The relevant seal inscription form of 乇 depicts a hand raising an object in the palm straight up, separating the object from others. 宅 is as per 乇# (separate) + 宀 roof/building → be separated from others in being confined to a *residence* → *be/stay at home*.
[Full Kanji Etymology List]