请教自己装修过房子的朋友, especially兔宝宝 2 U" ~1 h3 w t: t6 B* B& U' _I purchased a 2 storey house with 2100 sqft, partial fininshed basement(1/4 finished), I want to finish the left 3/4 basement plus a full bathroom and a small kichen, do I need some permission? How much I have to pay?0 k1 f' J1 H/ {" R8 h3 _# q; U0 m