2 reports. Still early. Read individual reports rather than trusting summary stats.
Basement Bathroom Addition Cost in the NeighborPrices database
Read what 2 homeowners actually wroteBased on 2 reports across the NeighborPrices dataset, basement bathroom addition jobs typically range from $8500.00 to $70000.00, with a median of $39250.00.
One email when this slice crosses the publish threshold. No list, no spam.
Shaded band: middle 50% of reports (25th–75th percentile). Median tick in teal.
Most jobs land between $11,575.00 and $66,925.00 (5th–95th percentile). Ignoring 1 outlier below and 1 above.
Based on reports from Apr 2026 (first entries this month).
Data last updated Apr 7, 2026.
Size context is still being collected (0 of 2 reports include home size or system size). Numbers above may not reflect what your specific home would pay. Add a report to sharpen this →
Latest reports
The underlying prices behind this page.
Put a new bathroom in the basement for $8.5k, excluding materials and plumbing.
Added a bathroom to the basement, including cutting concrete floors, excavating for a new sump pump, and installing underground wastewater lines. The project was quite challenging.
One report unlocks deeper data
Already had bathroom remodeling work done? Drop in what you paid. Once approved, you unlock the full detail across every page.