请教自己装修过房子的朋友, especially兔宝宝 . R }' Y9 x W4 JI 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?, b! ?" } u8 S0 v( {' V
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Thanks.