One of the most visible signs of foundation damage are cracks, which can be located in both the home’s exterior and interior. Exterior foundation cracks of large dimensions are often linked to foundation damage. Be on the lookout for unusually large cracks or horizontal cracks, which could be a sign of foundation movement. Visible slants in floors, ceilings, walls, and the general appearance of the house itself can indicate that the foundation is leaning or shifting, which is a sign of major foundation damage.