At Basement Systems GB, we provide homeowners with more than 30 patented, warrantied waterproofing products. Which products you chose will be one factor in determining the final cost. If basement waterproofing could be done for free, it'd be hard to imagine anyone who wouldn't want to. How much does basement waterproofing cost? Basement waterproofing is an important part of home ownership. Whether you have a wet basement or want to prevent future damage, you have to make sure that your foundation prevents any flooding or damage to your home with Homewyse Lists For a basic project in zip code with 120 square feet, the cost to Waterproof a Basement starts at 8. Actual costs will depend on job size, conditions, size options. To estimate costs for your project. The average homeowner spends around 4, 047 to seal a basement or foundation, with minor repairs costing as little as 600. More comprehensive issues that include fixing cracks in the foundation or adding drains gutters can cost upwards of 10, 000. Depending on a number of variables, that cost can range anywhere from 2, 024 and 6, 140. The national average cost of an exterior waterproofing job for a basement is typically between 8, 700 and 14, 500, but may be more or less depending on where you live. The price can be as high as 80, 000, depending on how accessible the targeted areas are, how much digging is required and how much landscaping or other work must be restored. Factors affecting the cost of basement construction include ground conditions such as excavation costs, type of waterproofing system and access for construction. The TBIC cost analysis provides an elemental breakdown of the range of costs associated with basement construction and summarises the varying influencing factors including type of. Basement waterproofing costs vary greatly depending on the source of the water issue. The simple preventative tips we listed above can help to lesser your water issue or elimiate it all together. Its important to first identify the source of your wet basement before selecting a basement waterproofing. For some homeowners, the cost to waterproof a basement can come in anywhere between 11, 000 and 15, 000 for a large cellar that needs exterior excavation. The basement waterproofing cost for a sump pump works out on average to between 11 and 22 per square foot, depending on the size of the basement floor. Figuring the average basement at 1000 square feet, that runs into some money: between 11K and 22K for the complete job. Hiring someone to repair and seal your basement interior can run 2501, 000 or more; if the project also includes outside excavation plus installing a waterproof barrier and footer drains, the total cost starts around 5, , 000, but can run 11, , 000 or more. To waterproof a damp cellar through tanking can cost as little as 4080m. However, remember that lowering the floor level to increase headroom costs around m. A rough cost for underpinning the walls will come in at around 5001, 000m. Further information on the costs can be found at the Basement Information Centre.