请教自己装修过房子的朋友, especially兔宝宝 7 q, X& I4 f) f2 c7 fI 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? ' v4 t3 Z( O* |# Q 3 @ a) w9 d* y& K2 oThanks.