请教自己装修过房子的朋友, especially兔宝宝 * y$ P' _4 f7 o7 ~+ KI 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? ) x# h. m: T1 a) k0 |* Q. g% ? 9 q! J1 O6 F3 D$ ?Thanks.