1#重庆人 * c' Z0 _+ x+ u4 u5 }' Y9 ` 7 ^6 g( q: L3 s6 I j7 a8 k% d$ N, s0 f' y* v1 {3 w0 f0 a
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.