Water line on the basement floor after heavy rain
Urgency
4/5
Honest verdict: this one's worth a pro$300–$5,000Typical repair cost
Likely causes, most common first
- Surface water driven at the foundation: short downspouts + grading toward the house (most common, cheapest to fix)
- Cove seepage: hydrostatic pressure pushing water at the wall-floor joint
- Window well or crack entry at a specific point
Do this right now
- Map it: photograph exactly where water appears while it's happening
- Extend every downspout 6–10 feet TODAY — a $40 experiment that solves a shocking share of these
- Move stored valuables up NOW; cardboard on concrete is a loss multiplier
DIY or call a pro?
The diagnostic ladder runs cheap-to-expensive: downspouts/grading → crack injection → interior drain tile + sump. Anyone who quotes the expensive end without walking the cheap end first is selling, not solving. We start at the bottom of the ladder.