Distinguishing between normal settling and structural movement is vital for homeowners, especially in Centennial, CO, where expansive clay soils are common. While some movement is expected during the first year of a new build, the severity and shape of cracks are the most important indicators.

Normal, Harmless Settling

• Hairline Cracks: Normal settling typically produces vertical or diagonal cracks less than 1/8 inch wide. These are often cosmetic drying shrinkage in drywall or masonry.
• Seasonal Sticking: A door that sticks during a wet spring but swings freely in summer is often just seasonal expansion and contraction, which is typically within normal tolerances.
• Stability: Harmless cracks generally do not widen noticeably over time or cause secondary issues like sloping floors.

Problematic Structural Movement

• Stair-Step Cracks: Diagonal cracks that follow mortar joints in a zigzag pattern are a major red flag for differential settlement.
• Significant Width: Any crack exceeding 1/4 inch in width is considered structurally significant and demands professional evaluation.
• Horizontal Cracking: Unlike vertical hairline cracks, horizontal cracks in foundation walls often indicate serious structural pressure.
• Secondary Symptoms: Warning signs include doors and windows that permanently stick or misalign, gaps forming between walls and ceilings, and floors that feel uneven or sloped.

We recommend monitoring any visible cracks for at least two seasons (winter and summer) to track their progression. If you notice cracks widening or multiple signs appearing simultaneously, it is time for a professional assessment. Please consult a licensed contractor for definitive advice; verify licensure with the Colorado Department of Regulatory Agencies (DORA). Project outcomes and timelines may vary based on site conditions, permitting, and material availability.

• Signs of Foundation Settlement in New Construction: Early Warning Guide