1#重庆人 ! K0 h* r0 \/ \3 {4 r. t4 K2 w5 N# p$ M, D% r
, m |1 U& d7 ^, W% @2 I+ b/ rIf 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.