How Much Does It Cost to Inspect Waterproofing in 2022?

Typical Range:

$3,686 - $12,801

Find out how much your project will cost.

Cost data is based on actual project costs as reported by 3,002 HomeAdvisor members. Embed this data

How We Get This Data

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  • Homeowners use HomeAdvisor to find pros for home projects.
  • When their projects are done, they fill out a short cost survey.
  • We compile the data and report costs back to you.

Updated December 27, 2022

Written by HomeAdvisor.

The national average waterproofing inspection cost is $8,228, with a typical range between $3,686 and $12,801. If you don't need any repairs, you can expect to pay between $300 and $500 for the inspection alone. Water seepage is a common but significant problem in basements. While a small leak may seem harmless, it can cause substantial damage to your property's foundation over time. So if you suspect a leak or you’re moving into a new property, waterproofing inspections are vital to ensure the basement is free of leaks and water seepage.

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National Average $8,228
Typical Range $3,686 - $12,801
Low End - High End $450 - $20,000

Cost data is based on actual project costs as reported by 3,002 HomeAdvisor members.

What Do Pros Check for During a Waterproofing Inspection?

When you hire a pro to do a waterproofing inspection, you’re really paying for the expert’s time. The inspector checks inside and outside your property, looking at numerous key points. These include your exterior ground slope, the condition of your gutters, whether you have adequate downspouts, and whether you already have interior water damage.

Exterior Ground Slope

One key thing a pro will check is whether the ground around your home is appropriately sloped and graded. It should have a gentle downward gradient, sloping down and away from the building's foundation. This directs rain away from your property. If the ground slopes toward your house, the water runs toward the base of the walls and has nowhere to go but in.

Guttering

Another key inspection point is whether you have enough guttering, the right type of gutters, and if the gutters are in good condition and free of obstructions. If your gutters are overflowing or clogged, water will run over the side and down the walls of your house when it rains—and a small portion will undoubtedly seep into the bricks at the bottom. Over time, this adds up to a significant amount of moisture.

Adequate Downspouts

Even if your gutters are clean and you've got a nice downward slope to your yard, it's important that your downspouts send water far enough away from your property that it can't run back again. The waterproofing inspector will advise whether you need downpipe extensions to ensure water can't travel backward to your home.

Interior Damage

Once the pro has finished the exterior examination, they'll move into the basement and check for several telltale signs:

  • Efflorescence (visible white powdery patches on porous surfaces like brick caused by salt crystals in water)

  • Cracked walls

  • Rotting wood

  • Sagging floors

  • Damp patches on the walls or ceiling

  • Rising damp

  • Rust stains

  • Mold

  • Bubbling or peeling paint

Most homeowners spend about $4,920 on the cost of waterproofing a basement or foundation. You may pay more or less depending on the issues and the severity.

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Waterproof Inspection Cost Factors

Waterproofing inspection costs vary depending on the size of your property, ease of access, and the climate in which you live. Suppose you have a large, sprawling property and half of the exterior walls are covered in overgrown greenery. In that case, you'll pay more for the inspection than if you have a modest, well-kept property with easily accessible walls and basement access. Also, if you live in a location where flooding is common, basement inspection costs might be higher or it might take more time to book an appointment due to the high demand.

Repairs and Remedial Work

After a waterproofing inspection, your pro may tell you there's evidence of water damage and recommend some remedial work. Among the most common recommendations are:

DIY vs. Professional Waterproofing Inspection

Because the potential for costly and significant damage is so high if you miss the signs of water incursion, this is not a DIY job. There are preventative measures you can take yourself to limit the risk of water damage in the basement, but leave the actual inspection to a local waterproofing contractor.

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FAQs

How important is a waterproofing inspection?

A waterproofing inspection is vital if you're moving into a new property or you suspect you have a leak. If you fail to take action, moisture can cause serious damage over time, and you could end up with a bill as high as $15,000 for the cost of repairing your foundation. Paying for an inspection and a little remedial work is far more affordable.

How can I prevent water damage in my basement?

Perform regular visual inspections of your basement to identify early signs of minor leakage. Regularly inspect and clean your gutters to make sure there's no blockage and water doesn't flood down your exterior walls and into the basement.

Make sure the ground slopes away from your home and look for areas where water pools long after rainfall, as these need to be resloped. The cost to reslope a yard is between $1,000 and $3,220 on average, but the cost to fix a flooded basement can go up to $15,000.

What are the warning signs of water damage in a basement?

Signs of moisture problems in a basement include water seeping or bleeding through the walls in corners or where the floor meets the wall. You may also notice peeling paint or bubbled paint, and if you touch one of these bubbles you'll most likely notice there's water inside it.

Also, look outside your home, as this is where most water leak problems start. If you've got standing water close to the foundation long after the last rainfall, you'll need help because this water can cause damage and force its way through your basement walls.

Does insurance cover waterproofing failure?

Most homeowner’s insurance does not cover waterproofing, since it’s considered maintenance. Instead, homeowner’s insurance usually covers accidents like flood cleanup from burst pipes, accidental fire damage, or damage from extreme weather events like hail. 

Most waterproofing failures are caused by poor quality work. Contract a licensed professional to do the work and ensure it’s done correctly. If installed correctly, a basement waterproofing solution can last as long as 10 to 15 years. If you do hire a pro and your waterproofing solution still fails, check the contractor’s warranty on the work and see if they will come remedy the issue.