What’s Really Causing That Hole in Your Yard?

When homeowners discover a sudden depression or hole in their yard, the first word they often use is “sinkhole.” While true geological sinkholes do occur in certain parts of the country, they are actually far less common than many people think. In our experience, most residential “sinkholes” are caused by something much closer to the surface. The good news?

Once the true cause is identified, the problem can usually be repaired correctly.

Buried Organic Material Is One of the Most Common Causes

One of the most frequent causes we encounter is buried organic material left behind during construction. Years ago, it wasn’t uncommon for tree stumps, logs, roots, or other vegetation to be buried on a property before grading was completed. As those materials slowly decompose, they leave empty spaces underground.

For years, the soil above may appear perfectly stable. Then one day, without warning, the ground settles into the void. What appears to be a sudden sinkhole has actually been developing for years.

Broken Pipes Can Wash the Ground Away

Another common cause is underground pipe failure.

A damaged storm drain, broken downspout connection, leaking irrigation line, or deteriorating utility pipe can slowly carry soil away over time. As water moves through the surrounding soil, it creates underground voids that continue to grow until the surface can no longer support itself.

By the time the depression becomes visible, a significant amount of soil may already be missing beneath the surface. Simply filling the hole rarely solves the problem if the water source remains active.

Construction Practices Can Leave Hidden Problems

Not every collapse is caused by water. Improperly compacted fill, buried construction debris, abandoned utility trenches, or poorly backfilled excavations can all create weak areas beneath the surface. These locations may remain stable for years before rainfall, changing moisture conditions, or everyday loading finally cause the ground to settle.

That’s why understanding the property’s history is often just as important as evaluating the visible damage.

The Surface Doesn’t Tell the Whole Story

One of the biggest mistakes we see is treating the visible hole instead of investigating what caused it.

Adding a few loads of soil may temporarily restore the appearance of the lawn, but if the underground void remains—or the source of the problem continues—the depression will almost always return. The visible damage is usually just the symptom. The real problem lies beneath it.

Finding the Cause Before Making the Repair

Every collapse tells a story.

We begin by identifying where the soil went and why it disappeared in the first place.

Was organic material left underground?

Has a pipe failed?

Is water being concentrated in one location?

Has erosion created an underground void?

Only after answering those questions do we determine the appropriate repair strategy.

A Permanent Repair Starts Below the Surface

Long-lasting repairs focus on restoring the ground from the bottom up. That may involve removing decayed organic material, repairing broken drainage or utility pipes, filling underground voids with properly compacted structural fill, and correcting the drainage conditions that allowed the problem to develop. Only after the subsurface has been stabilized should the landscape be restored.

Because whether the hole was caused by a buried stump, a broken pipe, or years of unseen erosion, one thing remains true:

The hole in your yard isn’t the problem.

It’s the evidence that something underneath needs attention.