Foundation Warning Signs for
North Texas Homeowners

Stair-step cracks in exterior brick — cracks that follow the mortar joints in a diagonal staircase pattern — are one of the clearest signs of foundation settlement. They appear when one section of the foundation sinks or shifts relative to another, pulling the brick apart at its weakest points: the mortar joints.

Inside the home, diagonal cracks radiating from the corners of door frames or window frames are similarly telling. These form when the frame is being racked by foundation movement. Horizontal cracks in concrete block walls are a more serious sign of lateral pressure.

Doors and windows that suddenly start sticking, or that no longer close and latch properly without force, are a classic early sign of foundation movement. As the foundation shifts, the frame of the house can rack slightly out of square — and door and window frames are the first place that shows up.

A door that sticks at the top corner, or has a visible gap at the top opposite corner when closed, is showing you exactly which way the frame has racked. This is often more diagnostic than any crack, because it shows the direction of movement.

Floors that slope, dip, or feel springy in certain areas are often a sign of foundation settlement or, in pier-and-beam homes, deteriorating supports beneath the floor. In North Texas slab homes, a sloping floor typically indicates the slab has settled in one area relative to another — something that will worsen over time without intervention.

A simple test: place a marble or level on various floors throughout the home. Any consistent slope toward one corner or wall is worth noting for an inspector.

Gaps forming between interior trim and walls, between walls and ceilings, above door frames, or where the chimney meets the house are all signs that parts of the structure are moving relative to each other. These gaps appear slowly and are easy to attribute to "normal settling" — but in most cases they indicate active foundation movement.

Exterior gaps — where the brick veneer is separating from the trim around windows or doors — are particularly important. They often appear before the stair-step cracks become obvious, making them a valuable early warning sign.