Basement waterproofing cost in Columbus
The honest answer is a range, because the price depends on how much wall is involved and how the water is getting in. Here is how the numbers are built.
About these numbers: they are planning ranges for central Ohio homes, not quotes. Your price comes from an inspection of your basement and is given in writing before work starts.
Typical ranges by job
| Job | Typical range | Priced by |
|---|---|---|
| Crack injection, one crack | $400 – $900 | Crack length and resin |
| Interior drain, part of the basement | $3,000 – $7,500 | Linear feet of wall |
| Interior drain, full perimeter | $7,500 – $16,000 | Linear feet, plus sump |
| Exterior waterproofing, per wall | $5,000 – $15,000 | Depth, length, access |
| Exterior, full perimeter | $18,000 – $40,000+ | Excavation and restoration |
| New sump basin and pump | $1,200 – $2,800 | Basin, pump, discharge |
What pushes the price up
- Finished walls. Drywall, trim and flooring along the work area have to come out and go back.
- Access. Patios, driveways, decks and porches against the foundation make exterior work harder.
- Depth. Deeper footings mean more digging and more backfill.
- Wall condition. Failed mortar, wide cracks or a damaged wall need repair before waterproofing.
- Permits. Where exterior work needs a city or county permit, its fee is part of the job.
What can bring it down
Fixing only the walls that leak. Correcting gutters, downspouts and grading first, which sometimes removes the need for a bigger system. Choosing an interior drain over excavation where the wall is sound.
Comparing estimates
Ask every company the same questions: how many feet of drain, which membrane, what pump, where the water discharges, what happens to the concrete and debris, whether a permit is included, and what warranty is written down. An estimate that won't answer those isn't comparable.
Questions
Why do estimates for the same basement vary so much?
Different companies propose different fixes: one may price a full perimeter drain, another two walls, another excavation. Compare the scope, not just the total.
Is the inspection really free?
Yes. The inspection and the written estimate cost nothing.
Can the work be financed?
Larger jobs can be. See financing.
More reading: all costs and guides · FAQ