1#重庆人 2 w8 @! R- Y7 Q+ G! u 5 A; V9 T: v5 Z& l! N$ o7 M# i! _ : a6 e4 s6 c+ m3 pIf 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.