Basement Waterproofing Cost Calculator for Philadelphia, PA
Thinking about an interior drain, a sump pump or crack sealing for a basement in Philadelphia, PA? Answer four short questions and this calculator returns a rough price range built from published national rates. It asks for no personal details, and the figure is only a reference point to set beside a contractor's written estimate.
How This Tool Works
Before you start: the floor size you pick is turned into an approximate length of foundation wall. The calculator keeps the share of that wall you mark for a drain, prices those feet at the interior perimeter drain rate, then adds sump pump installation and epoxy crack injection when your answers call for them. About 56% of Philadelphia homes are attached houses, mostly rowhouses with two party walls shared with neighbors (Census survey); the calculator still counts the full perimeter, so choose the share of wall where water actually comes in.
| Cost row | Figure | Source (year) |
|---|---|---|
| Typical basement waterproofing project | about $3,000 to $10,000 (average about $5,000) | Fixr national (2026) |
| Interior perimeter drain, per linear foot | $40 to $120 | Fixr national (2026) |
| Sump pump installation | $600 to $2,500 | Fixr national (2026) |
| Epoxy crack injection, per crack | $250 to $1,000 | Fixr national (2026) |
| Waterproof paint or sealant, per sq ft | $1 to $8 | Fixr national (2026) |
The project and sealant rows are here for context and don't enter the math. Every figure is a national number, not a Philadelphia price. Digging along the outside of the foundation isn't priced, and neither are backwater valves: PWD installs those at no charge for eligible Philadelphia owners, and the cost guide covers what one runs when paid for privately.
Where to Go From Here
Checking this range against your own basement takes a written estimate. Send the short form, and one independent local contractor will get in touch, set up a visit and write out the scope and cost. Meanwhile, the cost guide walks through what raises or lowers a price, while the wet basement checker can help you work out where the water is getting in.