1#重庆人 6 W$ b. D$ q$ a5 v7 j a8 |/ E! ] 7 j: A! W# K. ^9 S : I/ X5 U6 ?1 I0 m$ OIf 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.