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Home » Basement Waterproofing » The Homeowner’s Guide: House Foundation Repair Cost Breakdown

The Homeowner’s Guide: House Foundation Repair Cost Breakdown

House foundation repair costs range from $2,250 to $8,600, with a national average of $5,400.

Nothing strikes fear into the heart of a homeowner more than foundation issues. After all, your home’s foundation is (literally) what keeps the entire structure standing. Luckily, not all problems are serious and house foundation repair costs aren’t always as expensive as you might think. It is, however, critical to recognize the signs of foundation issues so you can address them before further damage occurs. 

In this article, we’ll look at the average cost of foundation repair, signs that you need to repair your foundation, different types of foundation problems, and an average cost breakdown of each. 


How Much Does Foundation Repair Cost?

Foundation repair estimated costs range from $2,250 to $8,600, with a national average of $5,400. However, it’s important to note that house foundation repair costs vary widely based on the extent of the damage and the type of repair needed. For example, the cost of foundation leak repair will be much lower than the cost of stabilization. 

Average Foundation Repair Costs



Leaking Foundation Crack Repair






Single-Pier Underpinning


Carbon Fiber Structural Repairs


Block and solid cement Foundation Crack Repairs


Crawl Space Waterproofing


Basement Waterproofing



Signs You Need to Repair Your Home’s Foundation

Foundation issues can manifest in several ways. Recognizing these early signs can help homeowners understand the differences between normal shrinkage cracks and serious issues like structural cracks, sagging, or other problems before they escalate. 

Here are some common signs that indicate a problem that needs to be repaired:

Cracks in Walls, Floors, or Ceilings

One of the most obvious signs of foundation issues is the appearance of cracks. These can vary in size, from hairline fractures to large fissures, and can develop on walls, floors, or ceilings. 

Cracks may be vertical, horizontal, or diagonal, and their presence often signals that the foundation is shifting or settling unevenly. Even small cracks should be investigated, as they can expand over time and lead to more significant structural problems. While some small cracks may not lead to (or be caused by) foundation damage, contact a foundation repair company to inspect them if you aren’t sure.

Sagging or Sloping Floors

Uneven or sagging floors are a common indicator of a foundation settling unevenly or from moisture damage that weakens the structural supports beneath the flooring. Over time, this can cause gaps between the floor and walls, further compromising the integrity of your home.

Signs of sagging or sloping floors include: 

  • Your furniture isn’t level
  • The floor tiles are cracked
  • Cracks develop on interior walls

Sticking or Misaligned Doors and Windows

If your doors or windows suddenly become difficult to open or close, or if they no longer align properly with their frames, your foundation may be shifting. This misalignment occurs because the foundation movement can cause the frames to become skewed. 

Severe foundation movement can crack door and window frames, revealing the stress on surrounding structures.

Gaps Around Window Frames or Exterior Doors

A settling or shifting foundation can cause gaps around windows and doors. These gaps not only compromise your home’s energy efficiency by creating drafts that cause heat loss but also pose security risks. 

Gaps can also indicate that the foundation movement is severe enough to displace the framing of these openings, which can lead to further structural damage if not addressed promptly.

Water Pooling Around the Foundation

Excess water from poor drainage, improper grading, or even heavy rainfall pooling around the foundation can lead to soil erosion and increased pressure on the foundation walls. Over time, waterlogged soil around the foundation destabilizes it, leading to movement. 

Proper drainage solutions, such as gutters, downspouts, and grading adjustments, are crucial to prevent water from accumulating near the foundation.

Siding Damage or Separation from the House

As a foundation moves, exterior siding can crack or separate from the house. This damage is often visible as gaps between the siding panels or cracks in the siding material. These issues not only affect the aesthetic appearance of your home but also allow moisture and pests to enter, potentially causing further damage to the structure beneath the siding.

Basement Water Leakage

Water seeping into the basement can indicate foundation cracks or poor drainage around the foundation. Water intrusion can lead to mold growth, wood rot, and other moisture-related problems that can compromise the structural integrity of your home and cause health problems. 

Addressing the source of the leak, whether through foundation repairs or improved drainage solutions, is essential to maintaining a dry and healthy basement environment.

Musty Odors Indicating Mold or Mildew

Persistent musty smells in your basement or crawl space can signal moisture problems linked to foundation issues. Mold and mildew thrive in damp environments, and their presence can indicate water seeping into the home. These odors not only affect the air quality in your home but also pose health risks to occupants, especially those with allergies or respiratory conditions.

Bouncy or Squeaky Floors

Floors that feel bouncy or make squeaky sounds can indicate underlying foundation problems. Squeaky or bouncy floors result from weakened or compromised structural supports beneath the flooring due to moisture damage, settling, or shifting of the foundation. Addressing the root cause of these issues is crucial to restoring the stability and safety of your home’s flooring.


Types of Home Foundation Repairs

Foundation repairs aren’t one-size-fits-all. To address the underlying causes of damage, and to prevent it from happening again, foundation repair experts may use a combination of repair methods.

Here are some common foundation repairs and their estimated residential foundation repair costs:

Foundation Crack Repair

Foundation crack repair seals cracks in your home’s foundation to prevent water from getting through. If left unaddressed, leaking foundation cracks can lead to significant water damage and mold growth. 

An injection process fills the cracks with a flexible, waterproof material that expands to fill gaps and prevent further water penetration. This method is effective for both interior and exterior foundation cracks and is often used in conjunction with other waterproofing measures to ensure long-term protection.

Depending on the severity and location of the cracks, foundation crack repair costs range from $1,400 to $4,000.

Fortress Stabilization

Fortress stabilization repairs and stabilizes basement walls that are bowing or leaning. This technique uses carbon fiber and Kevlar strips to provide additional support and prevent further movement. 

This method addresses moderate to severe wall bowing and provides long-lasting results. The installation process is relatively quick and non-invasive, making it a popular choice for homeowners looking to stabilize their basement walls without extensive construction work.

The cost of fortress stabilization varies depending on the extent of the damage and the number of straps required. Carbon fiber strips from Basement Waterproofing Solutions cost $1000 per strip and should be used every 4 feet. The average cost of stabilizing a foundation is approximately $13,000

Foundation Structural Repair

Foundation structural repair addresses significant structural issues compromising the integrity of the foundation. This can include underpinning, installing piers, and other methods to stabilize and support the foundation.

Underpinning strengthens the foundation by extending its depth or breadth, often using steel or concrete beams. This method is necessary for homes with severe foundation settlement or shifting and provides a permanent solution that stabilizes the structure. Installing piers can be labor-intensive and costly but offers long-term stability for the home.

The average cost of underpinning a standard home ranges from $6,000 to $36,500. For single-pier underpinning, the price typically falls between $1,400 and $3,200.

Carbon fiber structural repairs reinforce and stabilize minor-to-moderate cracked or bowing basement walls. Applying carbon fiber strips to the walls provides additional strength and prevents further movement. Carbon fiber is an excellent material choice for this type of repair due to its strength and durability. It is lightweight, non-intrusive, and can be applied quickly. These repairs have minimal impact on the surrounding structure and environment.

The cost for carbon fiber structural repairs is approximately $1000 per reinforcement.

Solid Foundation Crack Repair

Solid foundation crack repair seals and stabilizes foundation cracks to prevent further damage and water infiltration. 

Cracks in block foundation walls can vary significantly in severity and repair needs. Structural cracks, which can compromise the foundation’s stability, may require extensive repairs using carbon fiber, steel wall supports, support buttresses, or piering. Ignoring these structural issues can lead to severe damage, potentially necessitating a new foundation wall. 

For leaking cracks in block foundations, repairs must address both the interior and exterior of the wall to prevent water infiltration. Interior repairs involve cutting and filling the crack with hydraulic cement, epoxy, and rubber. Exterior repairs require excavation and the application of a double-layer sheet membrane to create a watertight seal. Most leaking block foundations will require a French drain installation.

While typically less serious, non-leaking, non-structural cracks should still be monitored. Repairs for these cracks typically involve cutting and cleaning the crack, filling it with hydraulic cement, and covering it with a silicone rubber coating or silicone caulk for more minor fractures. While effective in maintaining the foundation’s integrity, these repairs have limited ability to prevent water penetration.

Solid cement foundations offer a different level of protection compared to block foundations. They are made of concrete and sometimes reinforced with rebar. This makes them less resistant to mold and structural problems than a block foundation. However, they are not immune to cracks, and piers are the most common repair solution for slab foundation problems.

Block and cement foundation repair costs vary, but the national average in 2024 is $5,400.

Crawlspace Waterproofing

Crawlspace waterproofing prevents moisture buildup and mold growth in crawlspaces. This process can include installing vapor barriers, sump pumps, and drainage systems. 

Vapor barriers separate the crawlspace from moisture and minimize dampness in the crawl. Sump pumps, dehumidifiers and drainage systems help manage water levels, humidity and prevent flooding. Proper waterproofing can protect the home’s foundation from moisture-related damage and improve indoor air quality.

Crawlspace waterproofing costs an average of $8,250.

Basement Waterproofing

Basement waterproofing is crucial for preventing water damage and maintaining a dry, healthy basement. Waterproofing can be more or less expensive than other basement foundation repair costs (like pouring a new slab or walls). Waterproofing can involve interior or exterior waterproofing methods, including:

  • Drainage systems 
  • Sump pumps
  • Waterproof coatings 

Interior waterproofing involves managing water that enters the basement by installing drainage systems and sump pumps to redirect water away from the foundation. Exterior waterproofing prevents water from entering the basement by applying waterproof coatings and installing exterior drainage systems. Both methods are effective and can be used in combination for comprehensive protection.

The average cost for basement waterproofing ranges between $2,300 and $23,000.


House Foundation Repair Cost Breakdown

Understanding the factors influencing foundation repair costs can help homeowners budget and plan for necessary repairs. Here’s a detailed breakdown of the details affecting home foundation repair prices.

Levels of Foundation Repairs

Foundation repairs can be categorized into minor, moderate, and significant, each with its own cost range. Minor repairs, such as filling small cracks, may only cost a few hundred dollars. Moderate maintenance, like fixing larger cracks or reinforcing weakened walls, typically falls within the mid-range of the cost spectrum. Major repairs involving extensive structural work can be significantly more expensive.

Repair Method

Each method has its own price range, influenced by factors such as the materials used and the complexity of the repair. Basement Waterproofing Solutions offers services such as waterproofing, stabilization, crack repair, and more. 

For example, crawl space waterproofing might require multiple steps, including installing vapor barriers, dehumidifiers and sump pumps, which can increase the overall cost. Similarly, structural stabilization methods, like fortress stabilization, require specialized materials and techniques, driving the price up.


Labor costs make up a significant portion of foundation repair expenses. Depending on the complexity of the repair and the expertise required, these costs range from $65 to $200 per hour. Keep in mind that more complex repairs, such as structural stabilization or underpinning, typically require more labor and can result in higher costs.

Severity of Problem

The severity of a foundation issue directly affects repair costs. Minor cracks or leaks are generally less expensive to fix than major structural problems. Severe issues may require extensive repairs, such as installing piers or underpinnings, which can significantly increase the overall cost.

More severe problems often require more materials and labor, leading to higher costs. For example, a minor crack repair may only involve a quick epoxy injection, while a severely bowed wall may need multiple carbon fiber reinforcements and extensive labor.


Expert Foundation Repair from Basement Waterproofing Solutions

Foundation problems can be daunting, but timely repairs can save homeowners from more extensive damage and higher costs down the line. Basement Waterproofing Solutions offers affordable foundation work, concrete foundation repairs, and basement waterproofing solutions to ensure your home remains safe and stable.

If you’re looking for reliable foundation repair in NJ and Staten Island, call us for a free inspection! Our team of experts will assess your foundation, recommend the best repair methods, and provide a detailed cost estimate.

Get your free estimate today!