Basement Waterproofing Cost in Dallas [2026 Data]

Basement waterproofing costs in Dallas, Texas, are roughly 6% higher than the national average. This is expected, as the cost of living in general in Dallas is slightly higher than the typical U.S. city. Specifically, Texans can expect to pay an average of $4,734 to waterproof their Dallas basements, though prices can range from $2,112 to $7,732.

Basements in Dallas are rare since foundations don’t have to be built as deep in southern states as they do in northern ones. Plus, in Texas, there is more space for larger homes without the need for a basement. However, if your home is the exception to the rule, it’s crucial that you waterproof your basement. After all, flash floods can happen fast in Texas because of its clay-rich soil and heavy rainfall during storms—and you’ll want to make sure your basement is protected.

Basement Waterproofing Cost Factors 

Several factors influence how much it costs to waterproof a basement in Dallas, Texas, including the size of the basement, as well as the method used (and whether the treatment is on the exterior or interior).

Basement Size

The cost to waterproof a basement falls between $3 and $11 per square foot on average, although where in this range your pricing falls depends largely on the type of waterproofing method you choose. In any case, large spaces require more time, labor, and material to waterproof than small spaces. Therefore, the larger your basement, the more you can expect to pay for waterproofing for any given method.

Below is a breakdown of how much you might spend for a range of basement sizes.

Interior vs. Exterior Waterproofing

Depending on where your basement water issues are stemming from and what solutions your expert recommends, you may need either interior or exterior waterproofing services. Some homes require both. Interior basement waterproofing is often more affordable because it doesn’t involve excavation and backfilling. Something like installing damp-proofing around the exterior of your foundation would require a lot of digging, which drastically increases labor costs.

You’ll spend an average of $3,175 on interior waterproofing services, while extensive exterior services will cost an average of $7,425.

Waterproofing Method

As mentioned above, professionals can waterproof your basement from the exterior or the interior. Exterior methods are more effective because they’re preventative, but they’re also more expensive because they tend to require excavation, which is time-consuming. The table below includes a list of basement waterproofing methods along with cost ranges for each.

Basement Waterproofing Pro Costs

We don’t recommend attempting to tackle this project on your own (though if you’re up for the challenge, here’s how to waterproof your basement). For that reason, you’ll need to work with a professional waterproofing contractor or company to get the job done.

Labor Costs

On average, basement waterproofing contractors in Dallas charge around $210 per hour, but this can vary by company. Get quotes from at least three contractors to ensure you’re getting the best price on a timeline that works for you.

Permits

Depending on the method used to waterproof your basement, you may need to obtain a permit from the city of Dallas. Your local basement waterproofer should arrange for this permit on your behalf, and the cost of the permit will likely be reflected in your quote, but always ask during the quote process to be sure.

Does Basement Waterproofing Increase Home Value?

Yes, waterproofing your basement can boost the value of your home in Dallas. In fact, many Texans are not accustomed to basements, so potential buyers may have reservations if your basement is not waterproof. On average, homeowners can expect a 30% return on investment when waterproofing a basement.

Even if you don’t plan on listing your home any time soon, waterproofing your basement is a good idea, as it can help prevent expensive water damage restoration costs in the off chance there’s intense flooding in your part of Dallas.

How Angi Gets Its Cost Data

Home is the most important place on earth, which is why Angi has helped more than 150 million homeowners transform their houses into homes they adore. To help homeowners with their next project, Angi provides readers with the most accurate cost data and upholds strict editorial standards. We survey real Angi customers about their project costs to develop the pricing data you see, so you can make the best decisions for you and your home. We pair this data with research from reputable sources, including the U.S. Bureau of Labor Statistics, academic journals, market studies, and interviews with industry experts—all to ensure our prices reflect real-world projects. 

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