Sump pump cost by job
| Job | Installed price | Good to know |
|---|---|---|
| Replace a pedestal pump (existing pit) | $300–$900 | Needs a pit at least 18 in. deep |
| Replace a submersible pump (existing pit) | $400–$1,200 | The most common replacement |
| New pit with a submersible pump | $1,200–$3,000 | Cuts a pit into the concrete floor |
| New pit, pump, discharge line and battery backup | $1,500–$4,000 | Backup power already included |
The biggest price driver is whether a sump pit already exists. Swapping a new pump into an existing pit is a small, quick job. A new pit means cutting through the concrete floor, digging, setting a liner, backfilling with gravel and patching the floor, which turns a two-hour swap into at least a half-day project.
Pedestal or submersible?
A pedestal pump keeps its motor above the pit. It's cheaper and a shallow pit under about 18 inches may only fit a pedestal. A submersible pump sits inside the pit, costs more, runs more quietly and is usually the better fit in a finished basement. Lifespan figures vary by guide; one lists 7 to 10 years for submersible pumps and 10 to 15 for pedestal pumps.
Battery backup
The power often goes out in the same storms that flood basements, so a backup matters. Adding a battery backup to an existing system typically costs $200–$1,000. A water-powered backup pump runs about $500 to $1,500. The full new system in the table already includes backup power, so the calculator doesn't add it again. Backup batteries need replacing every few years.
Other costs
- New discharge line or re-routed drainage: $300–$1,500.
- Replacing just the pump: if the pit and discharge line are sound, a DIY swap can save roughly $150 to $400 in labor. Have a pro confirm the existing pit and line are in good shape before reusing them.
- Permits vary by location and aren't priced here.
Questions to ask before you hire
- Is there an existing pit I can reuse, and is the discharge line in good condition?
- Which pump are you installing, and what's its horsepower and warranty?
- Does the quote include a check valve, a backup system and the discharge line?
- Where will the water discharge, and does that meet local rules?
- How is the finished floor patched around a new pit?
Methodology and sources
We price each job as an installed total, adjust the labor share for your state's plumber wages, and price backup power and extras separately. Read how we estimate costs.
- Angi: sump pump installation cost
- NuFlow DFW: sump pump replacement cost — a plumbing company's breakdown
- Home Dependable: sump pump installation cost — new pit, discharge line, water-powered backup
- RateYourPlumber: sump pump installation cost — pit work, battery backup
- Empire Home Protect: sump pump replacement cost — pedestal and submersible
- The Basement Guide: sump pump cost and Call Home Therapist — full systems
- Dwyer Services: sump pump replacement cost — battery backup
- BLS OEWS May 2025, State (SOC 47-2152, Plumbers) — state labor index
What each source reports
Our estimate does not rely on any single page. This table lists each page we used and the figures it reports, so you can see where the ranges come from.
| Source | What it reports |
|---|---|
| Empire Home Protect |
|
| The Basement Guide |
|
| NuFlow DFW |
|
| RateYourPlumber |
|
| Home Dependable |
|
| Angi | submersible pumps $1,200-$3,000 |
| Call Home Therapist | full new installation on a slab-on-grade home $2,500-$4,000 |
| Dwyer Services | battery backup added to an existing system $300-$800 |
Common questions about sump pump replacement & installation costs
How much does sump pump replacement & installation cost?
A typical job (replace a submersible pump) comes to about $700 nationally, within a range of $400 to $1,200. Use the calculator above to adjust for your state, the options you choose and any extras.
How much does it cost to replace a sump pump?
Replacing a submersible pump in an existing pit comes to about $400–$1,200. A new pit with a submersible pump comes to about $1,200–$3,000, and a new pit with pump and battery backup to about $1,500–$4,000.
Where do these prices come from?
They come from 8 published cost pages from 8 publishers, last checked Oct 2, 2026. We report what those pages say and do not invent figures; the table above shows each source.
How does my state change the estimate?
The labor part of the price is scaled by the average wage for the relevant trade in your state, using Bureau of Labor Statistics data. Materials and equipment are not adjusted.
Why might a contractor's quote differ from this estimate?
A quote reflects your specific scope, access, local demand and what the contractor includes. Ask for line items rather than a single total so you can compare bids on the same basis.
All 8 sources behind these prices
Every figure in the calculator comes from one or more of these pages, with the number each one supports in the link text.
- Empire Home Protect: pedestal pump replacement $300-$600
- The Basement Guide: pedestal pump replacement $400-$900
- NuFlow DFW: replacement in an existing pit $400-$1,200 including pump and labor
- RateYourPlumber: submersible installation $250-$700 plus the pump
- Home Dependable: new submersible pump with a new pit cut into concrete $1,200-$3,000
- Angi: submersible pumps $1,200-$3,000
- Call Home Therapist: full new installation on a slab-on-grade home $2,500-$4,000
- Dwyer Services: battery backup added to an existing system $300-$800