See the honest number first.
Five questions, no email gate, no “sign tonight” sales hook. Same range we'd write on a quote at the kitchen table.
What's a basement like yours actually cost?
A few questions, no email required. Results show immediately. The number you see is the same range we'd quote at the kitchen table.
What kind of work are you investigating?
This is the same range we would write at the kitchen table. The written quote comes after the free inspection, and it will land inside this range unless we find something genuinely unexpected (deeper footing than typical, prior remediation hidden behind finishes, a soil condition that needs a different spec). When it does, we walk through it with you before the work starts.
Same word. Different product. That is why the prices look so different.
Real drain tile. Buried at the bottom of the footing.
4-inch perforated PVC pipe in a washed-rock envelope, wrapped in geotextile, set at the bottom of your footing roughly 18 to 24 inches below your slab. Catches hydrostatic pressure at the point of attack, before water can push up through your basement floor.
Typical install: $9K-$14K with backup.
Plastic channel. Sitting on top of your slab.
A baseboard-style channel glued to the inside edge of your floor at slab elevation. No trench, no excavation, no real pipe. Water has to rise to the channel's level before it gets caught. By the time their system catches the water, it has already reached your floor.
Typical franchise quote: $18K-$25K+.
Both systems route water to the sump. Only one of them catches it before it reaches your floor. That is the entire difference, and it is why our number looks lower for what is actually the more complete fix.
If you have a quote from a franchise, bring it. We will walk through what they are selling line by line at your free inspection, and we will tell you honestly whether their number is fair for the product they are quoting.
See the full breakdownReal homes, real medians.
Five archetypes pulled from our actual jobsite records. Find the one closest to your situation and the price is usually within a thousand or two of these numbers.
1950s rambler, full drain tile
70 ft perimeter, unfinished basement, sump + battery backup included
1990s 2-story, finished basement
120 ft perimeter, finished basement demo + restore, sump + backup
Anoka sand-plain home
Full perimeter, larger M98 pump, battery backup, sand-plain water-table spec
Sump pump replacement, clean swap
Existing pit in good shape, pump dead or aging, no backup change
Surface-water fix
Regrade 2 sides + buried downspout extensions, no French drain
Most contractors hide the number until they are in your living room.
Pricing transparency is the #1 complaint Twin Cities homeowners have about the waterproofing industry. The national franchises run sales-heavy operations with monthly quotas. They want you in a room with a closer before you see a real number. We do not.
The calculator above outputs the same range we would quote at your kitchen table. The exact number depends on what we find at the inspection (buried mechanicals, soil conditions, existing infrastructure that was not visible from outside), but the ballpark is the ballpark. If you want the line-item breakdown of what drives the number, read the full 2026 cost guide.
Have a quote from another waterproofer that is outside our range? Bring it to the inspection. We will tell you honestly whether they are selling a different product (often the case) or whether their number is actually fair (sometimes the case). Apples to apples is what matters.
Ready to fix it for good?
Free inspection. Written lifetime warranty. No high-pressure sales, ever.