In the US, more than half of homes have basement problems.

If you have a damp basement, you might be wondering what it would cost to waterproof it.

Structural damage, decreased home value, and mold andbacteria growth can be caused by excessively moist basement. Health problems such as asthma can be made worse by the growth of mold andbacteria in the basement.

It’s important that you waterproof your basement as soon as possible. It’s important to have a budget in place for the fix so that you can plan for it.

If you need to get your basement waterproofed quickly and know what it will cost, read on. We are going to show you all the factors involved in the final cost and average cost for basement repairs.

Average Cost to Waterproof a Basement

Let’s take a look at the average costs of basement renovations. A basement can cost anywhere between $1,920 and $6,493 according to the online estimates.

The cost per square foot is between $3 and $10

For minor fixes, costs can be as low as $600, while at the same time extensive and involved waterproof jobs can cost some homeowners as much as $10,000.

There is a big difference between paying $600 and $10,000, so let’s take a look at some of the variables that will influence the exact cost of your repair so you can draw up a relatively accurate budget.

How to estimate the cost of your basement repair.

There are a lot of factors to consider when estimating the cost of basement repair. The ultimate cost will be determined by the size of the basement, what the underlying issue is, and what it will take to fix it.

Figure out Where the Issue Is Coming From

The first thing to look for is the source of the water.

Improperly installed or missing downpipes exterior basement waterproofing and gutters

  • Drying large amounts of laundry is a interior activity.
  • Leaking water pipes
  • Cracked foundations
  • Improperly graded slopes around your house
  • Groundwater
  • Badly designed window wells

You will be able to estimate how much it will cost to fix it once you know which of these is causing it.

Understand the Different Solutions

Depending on the severity of the damp problem in your basement, there are a variety of solutions that can be used together.


You can purchase a dehumidifier for very minor problems. It will cost between $1,300 and $2,000 to install, but can be effective for mild internal sources of water. A humidifier won’t be able to deal with serious damp problems.

Further damage can be caused by using a humidifier to remedy a damp problem that is coming from the outside. The air in the basement can be dried out by sucking water through the walls, which can cause efflorescence, concrete spalling and further damage to interior finishes.

Waterproofing Products

You can use a product on the inside of the basement to stop the water from entering. The solution costs between $20 and $200 per can of paint, and includes labor charges.

It is best used along with other prevention methods. If you apply a waterproof coating to the interior of your basement, you can keep it dry, but it will still sit in the walls and foundations, which is not ideal.

Proper Installation of Downpipes and Gutters

If your downpipes and gutter are damaged or missing, this will cause the water from your roof to go into your basement.

Depending on the size of your home, it can cost between $550 and $1,350 to install new gutter and downpipes. If you already have some gutter in place that needs to be fixed, the costs might be lowered.

Installation of Window Well Drains

If the source of your basement water problems is window wells that are not properly designed, you can install window drain. If the basement windows are the root cause of your problem, this can cost anywhere from $500 to $2,000.


If the lawn around your home slopes towards the house, this could lead to surface water in your foundations and make your damp problems worse. If you don’t mind having your garden graded, you can re-slope some areas for a fee.

It is generally not effective on its own.

French Drain Installation

Water can be moved away from your basement before it reaches it. The drain will cost between 1000 and 15000 per 50 feet.

You can install interior French drain in your basement.

Sump Pump Installation

If combined with a subfloor pressure relief system, the installation of a sump pump is a highly effective fix for damp basements. Depending on the number of pumps required and the brand used, the installation of a submerged pump can cost between $500 and $1100.

If you don’t have a pressure relief system in your basement, you’ll need to get a subfloor pressure relief system.

Foundation Crack Repair

If you have cracks in your foundation, you can do a repair.

Depending on the number of cracks and the quality of the crack repair job, it can cost anywhere between $500 to $1,000.

The final tip is to find a good contractor.

The last tip is to find a contractor that you can trust once you know what it will cost to waterproof the basement.

If you need to find a reliable and ethical contractor in Baltimore or Rockville, then you should call us today. We have over 20 years of experience in the basement waterproofing industry and are committed to our customers.

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