请教自己装修过房子的朋友, especially兔宝宝 5 J6 P6 j8 i$ m bI 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? 5 p( Z+ B& b5 t: B4 t # X( l: E- I# F$ tThanks.