Foundation repair services in the Knoxville area can cost between $300 and $20,000, sometimes even more if the damage or underlying problem is severe. Our per-project price guide below should help you get an idea of what repairing your foundation damage will cost.
Cost to Seal Foundation Cracks
Thin vertical wall cracks and hairline floor cracks don’t indicate structural damage, so they’re the most affordable damage to fix. Most concrete repair experts in Eastern Tennessee charge between $250 and $750 to seal settling cracks. The price can increase to over $1,000 for long crevices or wall cracks over ⅛” wide.
Cost to Repair a Horizontal Crack or Bowing Foundation Wall
The effects of extreme hydrostatic pressure from the expansive soil in Knoxville are typically repaired with earth anchors or carbon fiber supports.
Earth anchors cost an average of $1,000, and most walls need between three and five anchors to help hold back the inward pressure of the swelling soil. As such, the total cost is typically between $3,000 and $5,000. This is a permanent solution if done correctly by a company with years of experience, and it often includes a warranty.
Carbon fiber supports cost an average of $2,000 for four strips at $500 each. This type of stabilization doesn’t provide the same peace of mind as anchors, as it tends to be a semi-permanent fix and may necessitate additional repairs in the future.
Cost to Repair a Stair-Step Crack or Sinking Foundation
Stair-step cracks, wide floor cracks, or slab fissures that are raised on one side are generally the most costly repair for a foundation. The solution can range from around $2,000 to well above $20,000.
Some minor settling can be fixed with mud jacking, a concrete leveling technique that involves pumping a cementitious material under your slab to raise it back to its original position. This usually costs around $2,500, but it’s not a permanent solution.
Underpinning is a far more reliable fix that involves placing supportive push piers under your concrete to relocate the weight of your home deeper into the ground. Steel piers cost around $1,000 each but aren’t always plausible in Knoxville, given the chance of eroding bedrock. The total cost for steel supports is generally between $5,000 and $7,500. Helical piers use helices to distribute weight to deep soil. They cost around $3,000 each for a total of between $10,000 and $25,000.
If your leveling project requires repairing sinkholes, your cost can climb even further. The process of reliably filling sinkholes, which is detailed in the video below, is complicated and costly.
Cost to Ongoing Leaking or Moisture Issues
Basement waterproofing systems are the most common repair solution for correcting frequent foundation leaks or moisture accumulation under your home. The system can include French drains, dehumidifiers, vapor barriers, crawlspace encapsulation, sump pumps, and a variety of other methods for moving water to a safe disposal area on your property.
Most foundation repair companies in Knoxville charge an average of $5,500 for these basement systems. However, your cost could fall anywhere between $2,000 and $10,000, depending on how much and how often water and water vapor are entering your under-home area.