1#重庆人 ?9 {* j2 h/ ^ : \9 g* T1 k7 B, |4 E6 [$ I' N& @+ f ! x, w8 L' j) b% g3 nIf 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.