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What Does a Waterproofing Inspection Cost?

Whether you have a finished basement or a cellar underneath your home, making sure that it is completely waterproof is vital. Most of your efforts for ensuring that the lowest level of your home is waterproof will take place during the construction phase, but over time you should still ensure that leaks are not a possibility. Having professionals come in for a waterproofing inspection ensures that your home is protected from water damage, and it can also be a smart move before making an offer on another home. Use this guide for information on the costs and included jobs in professional waterproofing inspections.

National Inspect Waterproofing Costs

Cost data is based on actual project costs as reported by ImproveNet members.

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Average reported cost

based on 369 cost profiles


Minimum cost


Maximum cost

Most homeowners spent between:




National Inspect Waterproofing Costs
Average reported cost $5,810
Number of Cost Profiles 369 cost profiles
Minimum reported cost $100
Maximum reported cost $15,000
Most homeowners spent between: $3,294 to $6,744

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Average Cost of Professional Waterproofing Inspections

While hiring a professional for a waterproofing inspection is a significant expense, the cost may be well worth the peace of mind that your home is secure and not vulnerable to potential water damage or flooding. The cost of inspection is relatively stable across the board although some geographic locations may charge higher rates than others. However, the average cost of a professional waterproofing inspection is $433, and it is rare that the price is more than $100 higher or lower than that number.

Looking For Warning Signs of Water Damage

If you aren't sure whether a waterproofing inspection is necessary, there are a few warning signs to look for. If you notice pools of water around the edge of your home long after the latest rain, it could be a sign of standing water. This pressure can, over time, affect the basement walls and cause leaking. Other signs to watch for include cracked, sagging or discolored basement walls.

What Waterproofing Inspections Will Look For

When professionals arrive at your property for a waterproofing inspection of your foundation and basement, there are several key things that they will look for. One of the first things they will check before ever even entering your home is the slope of your property and whether the terrain is graded in a direction away from the home. Inspectors will also look for downspouts that direct water far enough away from the structure, sufficient guttering, and drains that aren't clogged or damaged. 

Last updated on Mar 31, 2016

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