Cutting into a backyard hillside and installing a ~8' high retaining wallA house that I will submit an offer on this evening is limited to a small usable area in the backyard because it has a steep upward sloping hill going up over 100 feet. Could I simply cut the soil out and install a retaining wall to make the backyard longer? I know it will have to be more than simply cinder blocks and cement. I am just wondering if it is legal and easy to obtain a permit to do. The wall is currently maybe 3 or 4 feet high.December 07 2010 - Santa Clarita00YesReport a ProblemProblemSelect oneOffensive contentIrrelevant contentSpam (pure self-promotion)OtherDetailsYour emailPlease enter a valid email address.Submit CancelContent flaggedWe will review this content. Thanks for helping make the site more useful to everyone. To learn more, read Zillow's Good Neighbor Policy.We're sorry. This service is temporarily unavailable. Please come back later and try again.