请教自己装修过房子的朋友, especially兔宝宝 * y) _7 Y: H4 h8 q* S$ [$ f2 oI 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? ' j7 ?6 ?/ X/ d% t ) k/ G8 J" D! K* r' o& ~) UThanks.