We recently were asked to interpret the grading requirements beneath the home when the space is enclosed with a masonry wall. HUD Code (24 CFR § 3285.203) states that “Home sites must be prepared so that there will be no depressions in which surface water may accumulate beneath the home.” This is interpreted to mean that all footers and tire ruts must be backfilled. Additionally, we recommend that the drainage is directed away from the home and that waterproofing/damp proofing be applied to the masonry curtain wall portion below finished grade and an approved drainage system be provided.