Basement Waterproofing Cost Calculator for Baltimore, MD
Weighing a drain, a sump pump or crack sealing for a basement in Baltimore, MD? Four quick answers become a rough dollar range built on published national rates. No name or contact details are asked for, and the figure is for planning only, something to hold up against a contractor's written estimate once you have one.
The Method
Floor size works as a stand-in for how many feet of foundation wall ring the basement. From there, the calculator takes only the portion of wall you mark as wet, multiplies those feet by the interior perimeter drain rate, and adds a sump pump or epoxy crack injection if your answers ask for one. All three rates are Fixr's 2026 national figures, shown in the table.
| 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 there for context and stay out of the math. No Maryland cost source was used, so every number is national and the range is a sketch, not a local price. Exterior excavation, underpinning and wall bracing are not modeled. Backwater valves, sump tie-ins to a drain or sewer, and lateral or sewer work are plumbing jobs that a licensed plumber prices, so they are left out as well. On a rowhouse, shared party walls may mean fewer walls need work than the floor size alone suggests. Baltimore City's backup cleanup programs set their own terms; ask 311.
Keep Going
Think of this range as a yardstick; a written estimate is the actual measurement. Send the short request form and one independent contractor serving the Baltimore area will get in touch to talk through the job, look at the walls and write up its own scope and price. While you wait, the cost guide breaks down what makes a job bigger or smaller, and the wet basement checker can point to the likely source of the water.