请教自己装修过房子的朋友, especially兔宝宝 9 G) D; u$ v" v. vI 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?3 v! ], Q2 E, ]' \ E