1#重庆人 - L' _$ P1 K L n: j( e1 C( y$ P5 X! c . |$ N7 f v" m! K8 q, K/ ?8 i3 d4 X
If the builder is responsible for rough grading and the certificate as per your contract signed, then for sure, your builder has to do whatever needed to get a pass, whether it is a retaining wall or anything else. Talk to your lawyer to find out.