Building on slopes
The home inspector should note if a home is on a steep slope and, therefore, subject to erosion or movement. The maximum slope of a lot should be roughly 1-in-2.
negative gradingThe home inspector should note if a home is subject to negative grading or poor drainage. Water penetration could damage the foundation over time. Also, take note of driveways that slope toward the home.
high grading Wood siding and sill plates should be at least 6 inches above grade. Rotten sills will be crushed by the weight of the home and lead to settlement. Furthermore, a rotten sill weakens the anchoring of the framing to the foundation.