Water under a basement floor is one of the first signs that something is wrong beneath the concrete. When pressure builds under a home, it can weaken the structure and cause uneven floors or cracks. Slab leak repair addresses these issues by managing how water moves beneath the slab and redirecting it to a controlled drainage system.

Our team evaluates each project individually to determine whether an interior drain tile system or a full slab replacement is required.

What Determines Slab Leak Repair Cost

Several conditions influence the final price, including the layout of the foundation, how much footage is involved, and whether the concrete floor is structurally sound.

Interior Drain Tile Systems

One of the most common solutions for slab leak repair is installing an interior drain tile system. This system typically runs along the perimeter of the foundation walls, but in some homes, we also run it through the middle of the floor to manage higher water tables.

The drain tile collects moisture that builds up beneath the slab and directs it toward a sump pump, which removes the water from the home. This process helps relieve pressure under the foundation and prevents further damage.

• Installed Along: Foundation perimeter or middle sections
• Used For: Homes with consistent moisture or high groundwater
• Connected To: A sump pump for continuous discharge

Pricing: Interior perimeter drain tile repairs typically range between $60 and $90 per linear foot, depending on how many feet of drain tile are installed throughout the basement.

Pro Tip: In neighborhoods with a high water table, we often add sections through the middle of the slab to improve water movement and reduce long-term buildup.

Full Slab Replacement for Structural Issues

Full slab replacement becomes necessary when the original concrete has failed beyond repair. This is most often seen in older homes where the basement floor was poured without rebar or built on poor soil conditions. In these cases, the slab loses its strength and starts to move independently from the rest of the structure.

You may see signs such as:

• The sheetrock and framing stay in place while the slab drops below it
• You can slide your hand underneath the wall framing
• The concrete is buckling, or you’re tripping over floor cracks

When this level of deterioration appears, a stronger concrete pour is usually the only reliable fix.

Key Takeaway: Slabs that were built without reinforcement or on unstable soil eventually lose their support. A full replacement provides a solid and uniform base that restores the foundation’s integrity.

Need expert help with slab leak repair? Contact Olson Foundation Repair for a free consultation. Our specialists will inspect your basement and provide a detailed cost estimate.

Repair Options for Severe Slab Damage

Not every damaged slab requires immediate replacement. Some can be stabilized using polyjacking, a process that lifts the concrete by injecting material underneath. However, when the damage is extensive or the cost of lifting outweighs the benefit, replacement becomes the smarter investment.

Every situation is unique, and we always evaluate severity before recommending the best approach. If the slab is beyond repair, we advise homeowners to get a quote for what it would take to install a new, solid concrete floor.

How We Estimate the Work

Each slab leak repair is measured by the linear footage of drain tile being installed. Depending on the foundation layout, this could include only the perimeter or both the perimeter and the center sections.

We measure every foot carefully and factor in how the drainage system will direct water toward the sump pump. Because water movement varies between homes, every project is handled on a case-by-case basis to ensure proper performance.

Pro Tip: Accurate measurements help control cost and ensure complete coverage of problem areas. A well-designed system prevents repeat issues and keeps your foundation protected long term.

Schedule Your Slab Evaluation

The cost of slab leak repair depends on how much drain tile is installed and whether a full replacement is needed. Some homes only need perimeter systems, while others require interior runs to manage higher groundwater.

If your slab shows signs of movement or cracking, it’s best to schedule a professional inspection early. Contact Olson Foundation Repair today to request a free quote and learn the most effective solution for your home’s foundation.