请教自己装修过房子的朋友, especially兔宝宝 , [2 T2 N( W6 g) U2 M; k4 wI 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? @) F1 u; P5 n! d/ @0 Z ) @8 i8 r+ F3 A! [/ xThanks.