How much does sump pump installation cost?
The recorded new sump installation reference is $600–$2,500 per installation. The existing pit, power supply and discharge route affect the work; concrete-floor work can cost more. A sump suits water that can be collected at a low point and pumped to an approved outlet; it does not diagnose every damp-wall problem.
Check whether an interior drain package already includes the pump before adding a separate allowance.
Key facts as of Oct 30, 2026. Sources and recorded dates.
SIGNS
When should the sump system be checked?
Water reaching the collection area without being removed calls for a system inspection. Ask the professional to check the pump, incoming drains and discharge together rather than assuming a new pump will resolve the problem.
Guidance: PNNL Building America: Pre-retrofit assessment of crawlspaces and basements.
CAUSES
Why might a pump alone fail to keep the basement dry?
Water needs a collection route to reach the pit. A failed pump, blocked drain or unsuitable outlet can interrupt removal. Open pits can also provide a path for moisture and soil gases.
Guidance: University of Minnesota Extension: Moisture in basements, causes and solutions; PNNL Building America: Sump pump cover gasket.
FIXES
What should a sump installation offer specify?
Ask for the pit location, pump selection, electrical work, discharge route and commissioning test. Confirm local discharge requirements and whether backup equipment is included.
Use an accessible, gasketed cover with sealed penetrations. Ask how maintenance will be performed without losing the seal, and how the installation coordinates with any radon system.
Guidance: PNNL Building America: Pre-retrofit assessment of crawlspaces and basements; PNNL Building America: Sump pump cover gasket.
Which costs belong in this scope?
| Work | Planning range |
|---|---|
| Sump pump installation | $600–$2,500 / installation |
| Interior drain tile / sump system | $40–$85 / ft |
This is a new-installation reference, not a replacement-only price. The source publishes labor and material portions; only supported labor can use the separate city wage proxy. The main home calculator uses national references.
Read the basement waterproofing cost guide for the worked example and price factors, or calculate an estimate for your measured scope.
Sources and dates
Public guidance checked Oct 30, 2026. Cost references retain the recorded Oct 24, 2026 retrieval date; this guide adds no new price observations.
- PNNL Building America: Pre-retrofit assessment of crawlspaces and basements
- University of Minnesota Extension: Moisture in basements, causes and solutions
- PNNL Building America: Sump pump cover gasket
- HomeGuide: sump pump installation cost — recorded Oct 24, 2026.
- HomeGuide: french drain cost — recorded Oct 24, 2026.
Read how the calculator works and the source inventory for calculation limits.