Elevation is like that snake that you don’t see and can come up and bite you sometimes. Fortunate for you, Emerald usually knows when that snake is present, we just don’t know how hard he’s going to bite sometimes. Property or ground elevation is the height difference of your yard relative to a certain point (usually your existing patio). We try our best to account for elevation changes with the need for retaining walls, pool height, turndown, etc… Sometimes, those things can vary depending on the final elevation of your property. Final elevation will be determined day of dig. Most of the time, this is accounted for though in your contracts.