请教自己装修过房子的朋友, especially兔宝宝 % S1 U5 K! g a+ X# gI 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? # K S" h# F ]4 L8 W) M - d' E) {$ R) W* @Thanks.