Sump Pump Installation Cost 2026: $500–$1,500 Typical

Replacing a sump pump in an existing pit in a US single-family basement — a common submersible, the old discharge reused if it is still sound, a check valve, and a permit where the city requires one — often clusters around $500–$1,500. That is the typical sump pump installation cost, and the typical sump pump replacement cost, for that scope. A new pit cut into the slab, with a pump, is typically $1,500–$4,500. The wider national spread, about $400–$10,000, covers an easy pedestal swap in a lower-cost area at the low end and a new pit with a battery backup and a drain-tile tie-in at the high end. A full interior drain around the basement, on the French drain guide, a basement waterproofing system, a foundation repair, or a whole-house repipe can clear that spread. These are typical planning ranges, not a survey and not a quote.

This page is the pump and the pit that lift groundwater out of a basement. It is not a pier under a footing, which is the foundation guide, and it is not the eave and the downspout, which are the gutter guide. It is not the hot and cold supply. A sewage ejector for a basement bathroom is a different machine. It moves waste, and with the bath it can clear this spread.

The pump on the shelf is not the job. A submersible at a home center can look like a few hundred dollars. The bid is the trip, the check valve, the fit in the pit you already have, the discharge that has to leave the house, and the permit. Price the pit a plumber has looked at, not a horsepower tag from a forum.

The rows below are ways to read one job. They are not added together. The replacement row and the submersible row are the same scope: a pump in an existing pit, discharge reused, check valve included, permit included where the bid says so. The horsepower rows are that replacement at that size. The new-pit row already includes a pump, so it is not the replacement row plus a hole. Battery and water-powered rows are a backup beside a primary that stays, unless the row says the primary and the backup go in together. Use an add-on row only when the bid left that line out, or when the discharge, the circuit, or the tile actually has to be built.

Scope	Typical planning range
Pump replacement, existing pit	$500–$1,500
New sump pit, with a pump	$1,500–$4,500
Pedestal pump, existing pit	$400–$1,100
Submersible pump, existing pit	$500–$1,500
1/3 HP submersible, existing pit	$500–$1,200
1/2 HP submersible, existing pit	$700–$1,500
3/4 HP submersible, existing pit	$900–$1,800
Battery backup, beside a primary that stays	$800–$2,000
Water-powered backup, beside a primary that stays	$700–$1,600
Primary and battery backup, existing pit, one visit	$1,200–$3,000
Discharge line, when the bid leaves it out	$250–$800
Check valve, when the bid leaves it out	$50–$150
Dedicated circuit, when the bid leaves it out	$250–$700
High-water alarm	$100–$350
Permit, when the bid leaves the city fee out	$75–$300
Drain tile tie-in	$500–$2,000

Pump replacement in an existing pit is typically $500–$1,500. That is the cost to install a sump pump in a basement that already has a basin, a cover, and a discharge that still leaves the house. The low end is a common submersible in an open pit, in a lower-cost area, on a plug that already exists. The high end is a tighter pit, a pump that has to be cut out, or a 1/2 HP unit. It is not a new hole in the slab. The floor of the wider spread, near $400, is an easy pedestal swap. It is not this row discounted.

New sump pit installation cost is typically $1,500–$4,500. That includes the basin, the break in the concrete, gravel under the liner, a common submersible, a cover, a check valve, an ordinary discharge through the rim to the outside, and a permit where the city requires one and the bid includes that fee. The floor meets the top of a replacement because the cheapest new pit is still a pump plus a hole. $1,500 plus $500 is the wrong reading. The pump is already in the pit row. The top, $4,500, is a thicker slab, a finished floor to patch around the lid, a longer ordinary discharge, or a tight mechanical room. A buried line to daylight, a battery backup, and a drain-tile tie-in are not in this row unless the bid lists them.

A pedestal pump in an existing pit is typically $400–$1,100. The motor sits above the cover on a column, so the pit can stay easier to service, and the motor is louder in a room someone uses. The floor of that row is the floor of the wider spread. $1,100 still touches the typical band. A submersible in that same pit is typically $500–$1,500, which is the replacement row and the typical band. The motor is in the water, the lid can close, and it is the usual choice in a basement someone finishes. The two overlap from $500–$1,100. Ask which one the bid is. A pedestal price and a submersible price are two proposals, not two lines you add.

A 1/3 HP submersible, the common residential size in an existing pit, is typically $500–$1,200. That sits inside the typical band. A 1/2 HP submersible is typically $700–$1,500. The top of that row is the top of the typical band. A 3/4 HP submersible is typically $900–$1,800. The floor overlaps a 1/2 HP job. The top leaves the typical band by $300 and stays inside the wider spread. Use the horsepower row for the pump the bid names. Adding it to the replacement row double-counts the pump. The overlap is why two bids on the same pit can both be honest and still not match. The bid should say the horsepower in writing.

Horsepower is not the height of the water. The pump has to lift water the vertical distance of the discharge, and it has to push it along whatever horizontal run comes after that. A 1/3 HP pump is the usual planning size when that rise is about a story or less and the run to the outside is ordinary. A 1/2 HP pump is the usual step when the rise is higher or the run is long. A 3/4 HP pump is uncommon in a normal basement. It is the row that can leave $1,500. A plumber matches the pump to the rise and to how fast the pit fills. This page prices the installed pump. It does not size one from a chart.

A battery backup beside a primary that stays is typically $800–$2,000. That is the battery backup sump pump installation cost when the old pump is still the primary: a second pump, or a backup head, a battery, and a charger, in the pit you have. The floor is a compact unit in an open pit. The top is a larger battery or a pit that is already crowded. A water-powered backup beside a primary that stays is typically $700–$1,600. It has no battery to replace. It uses municipal water while it runs, so a long outage shows up on the water bill, and it needs city pressure. A house on a well usually cannot use one during an outage, because the well pump is electric. The two backup rows overlap. They are alternatives. Adding them together prices two backups.

A primary and a battery backup, installed in an existing pit on one visit, are typically $1,200–$3,000. $500 plus $800 is $1,300. The combined floor sits at $1,200, under that sum, because the trip is not billed twice. $1,500 plus $2,000 is $3,500. The combined top sits at $3,000, under that sum, for the same reason. A 3/4 HP primary or a discharge that has to be rebuilt on that visit can leave $3,000 and stay inside the wider spread. Do not add the replacement row, the battery row, and this row. This row is the visit. A new pit does not use this row. A new pit already contains a pump, so a backup on a new pit is the pit row plus the battery add-on once. $4,500 plus $2,000 is $6,500, inside the wider spread.

A discharge line, when the bid leaves it out, is typically $250–$800. The replacement row reuses a sound line. The new-pit row includes an ordinary run through the rim to a splash block or a short extension. Add this row when the old line is cracked, clogged, or dumping where it should not, or when a replacement bid assumed the old pipe and the old pipe is done. A line buried to daylight leaves $800 and is often a four-figure drainage line. Ask where the water is allowed to end. Many cities do not want sump water in the sanitary sewer.

A check valve, when the bid leaves it out, is typically $50–$150. It keeps discharged water from falling back into the pit and short-cycling the pump. The replacement row and the new-pit row include one. Add this line once, and only when the bid omitted it. A high-water alarm is typically $100–$350. It sounds when water rises past the pump’s normal start. A backup system that already includes an alarm is one number. Do not add the alarm row on top of that system.

A dedicated circuit, when the bid leaves it out, is typically $250–$700. The common residential pump plugs into a 120-volt outlet. A pump that shares a laundry or a freezer outlet goes off when that other load trips, and it stays off through the storm. The row is a nearby panel that already has space, with the outlet at the pit. A long run through a finished ceiling, or a pump that needs 240 volts, can leave $700. A panel with no space is a different project and can clear the wider spread on this page. A permit, when the bid leaves the city fee out, is often $75–$300. The scope rows include it when the bid says so. Add it once.

Drain tile tie-in is typically $500–$2,000 when existing footing tile has to be found and connected and that work is not already inside the pit excavation. The floor is a short connection at a hole that is already open. The top is more slab cut to reach the tile. A new interior drain around the whole basement is not this row. That system can clear $10,000. Price it on the French drain guide. A coating, a membrane, or an exterior excavation is the basement waterproofing guide. If a foundation repair is opening the slab for another reason, the tie-in is still its own line. It is not included in a pier price.

What the range includes

The typical band assumes an existing single-family basement and a pit that is already there. It includes a common submersible pump, reuse of a discharge line that still works, a check valve, a cover put back, and a permit where the city requires one and the bid includes that fee. An open pit in a lower-cost area sits toward $500. A tighter pit, a 1/2 HP pump, or a high-labor city sits toward $1,500.

A new pit meets $1,500 and then leaves the typical band. A 3/4 HP pump, a battery or water-powered backup, a new discharge, a new circuit, an alarm the backup does not already include, and a drain-tile tie-in are the other rows. A pedestal can sit inside the typical band where the two rows overlap, and it can also sit under it. A small patch of concrete around a new lid is part of how a new pit reaches $4,500. A new floor across the room is a different project.

How long the work takes depends on the pit and the discharge, and the bid’s schedule is the one that counts. A pump swap in an open existing pit is often a few hours. It can take a day when the old pump is seized or the discharge has to be redone. A new pit is often one day, and it can run into a second day when the slab is thick or the path out of the house is awkward. These are typical planning spans.

Living at home during the work is the usual plan. The basement is the work zone. A swap means the pump is off while it is out of the pit, so do not start on a day the forecast is a hard rain unless the backup is already in and stays online. A new pit means dust, a cut slab, and a wet vac. A household that uses that room as a bedroom can sleep upstairs. That stay is not in the plumbing bid.

Homeowners insurance and a home warranty are contracts, and this page is not a reading of yours. A standard homeowners policy is built around sudden and accidental damage. Groundwater, flood, and a pump replaced because it wore out are the kind of loss those policies commonly exclude or treat as maintenance. Water in a finished basement after a pump fails is a different question from the cost of the pump. A home warranty may name the pump and still exclude a pre-existing failure or any amount over a low dollar limit. Read the form before you treat either one as the budget. Neither one is inside the planning range.

The floor of the national spread, near $400, is an easy pedestal swap. The top, toward $10,000, is where a new pit, a battery backup, and a drain-tile tie-in usually land together. $4,500 plus $2,000 plus $2,000 is $8,500. A buried discharge on top of that approaches the top. A full interior drain, a foundation repair, new gutters on the whole house, or a whole-house repipe can clear that top. Treat a number above it as a different scope and ask which driver caused it.

None of the bands include piers or a leveling on the foundation guide, a new gutter system on the gutter guide, or a supply repipe. Downspouts that still dump at the foundation are the gutter job. A wall that has moved is the foundation job. Rusty water at the taps is the repipe, not a sump. Do not fold a pump into a pier allowance, and do not fold a new pit into a gutter bid.

As a cross-check, not a bid: a submersible in an existing pit is $500–$1,500, and that number is the replacement row, the submersible row, and the typical band. A 1/3 HP version of that job is $500–$1,200. A new pit with a pump and an ordinary discharge is $1,500–$4,500. If a bid and that reading are far apart, the bid is a backup, a new circuit, a buried discharge, or tile the reading left out.

What moves the price

Driver	How it changes the bid
Pit	An existing pit is the $500–$1,500 replacement. A new pit, with a pump included, is $1,500–$4,500. Adding the replacement on top of the new pit double-counts the pump.
Pump type	A pedestal in an existing pit is $400–$1,100. A submersible is $500–$1,500. They overlap. They are not added.
Horsepower	1/3 HP is $500–$1,200. 1/2 HP is $700–$1,500. 3/4 HP is $900–$1,800 and can leave the typical band. The row is the whole replacement at that size.
Backup	A battery beside a primary that stays is $800–$2,000. A water-powered backup is $700–$1,600 and needs city water. Primary plus battery, one visit, is $1,200–$3,000.
Discharge, valve, circuit	Left out of the bid, a discharge is $250–$800, a check valve is $50–$150, and a dedicated circuit is $250–$700. A buried discharge leaves the discharge row.
Alarm, permit, tile	An alarm is $100–$350. A permit left out is often $75–$300. A drain-tile tie-in is $500–$2,000. A full interior drain can clear $10,000.
Access and region	An open pit in a lower-cost area sits toward the floor of the row. A finished basement, a tight crawl, or a high-labor city sits toward the top and can leave it.

The cost to install a sump pump in a basement is the replacement row when the pit is there and the new-pit row when it is not. A crawl space the crew can reach, with a pit already in it, often lands on the same replacement row. A crawl that has to be dug out, or that the crew cannot turn around in, leaves that row. The liner and the sealed vents are the crawl space encapsulation guide, not a line inside the pump. Mold on the wall, once the water is gone, is the mold remediation guide. The basement is the baseline on this page.

Gutters, the foundation, and the pump are three invoices that share one drainage problem. Gutters and downspouts that discharge away from the house keep roof water out of the soil at the footing. A pump lifts water that still reaches the pit. A new pump with the downspout still emptying on that wall runs more than it should. Extending the downspouts is the gutter job. It does not empty a pit that is already full, and a pump does not fix a gutter that overflows at one corner.

A wall or a slab that has moved is the foundation repair guide. A sump does not lift a settled footing, and a pier does not pump the basement. If the wall has bowed and the floor is wet, price both. Interior drain tile that a foundation crew opens often ends at a sump pit. That connection is the $500–$2,000 tie-in when it is not already in the excavation. It is not a second copy of the pier price.

A whole-house repipe replaces the hot and cold supply. It does not drain groundwater. Clean water on the floor with no rain, or water you can trace to a supply line, is a supply leak. Call a plumber before you price a new pit. A failed main sewer that backs up at a floor drain is the sewer job. A sump discharge tied into that sewer is a question for the city, not a savings.

DIY or hire

A careful owner can swap a pump in an existing pit when the outlet is already there, the discharge is reused, and the old pump lifts out. Match the discharge size, set the float so the pump does not run dry and does not wait until the pit is at the slab, and put a check valve in if the old one is missing. Shut the breaker before you touch a pump that is hard-wired. The risks are a float set wrong, a leak in the discharge inside the wall, and a pump that sits unplugged through the next storm.

Hire the new pit. Breaking a slab, setting a basin, coring a discharge through the rim, and tying drain tile are a permit in many cities and a mess to undo. Hire the dedicated circuit. Call 811 before anyone buries a discharge in the yard. Gas, electric, and the sewer share that strip more often than the grass suggests.

Hire even more clearly when the pit is in a finished floor, the old discharge is buried, the panel has no space, or the water might be a supply leak or a sewer backup rather than groundwater. Those are the jobs where the wrong hole, or the wrong pipe, shows up after the crew is gone.

Repair or replace

The signs that usually lead to a price are ordinary. Water stands on the basement floor after rain. The pump runs constantly, hums and moves nothing, or never starts. The pit is full to the underside of the lid. The breaker trips every storm. The pump is rusted, the housing is cracked, or the float hangs free and does nothing. There is no pit, and the basement has already taken water. A musty smell and a white deposit on the lower wall remain after the downspouts already discharge away from the house. An inspector or a buyer has named the pump.

One wet streak where a downspout dumps on the foundation is the downspout. Extend it, on the gutter guide, before you buy a pump for a basement that has no other water. A crack with the floors level and the pit dry is not, by itself, a sump. If the wall bows or the floor slopes, that is the foundation guide. A pump will not close that crack.

How long do sump pumps last? Often about 7 to 10 years, as a planning life, not a warranty. Replace a pump that has failed, or that is past that span and already noisy, rusty, or unreliable, on the $500–$1,500 row if the pit is sound. A failed float on a pump that is otherwise young can sit under $500, near the floor of the wider spread. That is a repair. A repair that is a large fraction of a new pump, on a unit already in that 7- to 10-year span, is usually the wrong purchase. Cut a new pit, on the $1,500–$4,500 row, when there is no basin, the old basin is cracked or too small to take a pump and a backup, or water enters along the footing and has nowhere to collect. Do the work on your schedule. A pump that dies on a Saturday night in a storm is the same equipment plus an emergency opening and a wet floor.

Maintenance is a test, not a new pump. Pour water into the pit so the float lifts and the pump starts, on the schedule the manufacturer prints and before the wet season. Keep silt, gravel, and stored junk out of the pit so the float can move. Confirm the check valve holds. On a battery backup, look at the battery and the charger. The battery is often replaced about every 3 to 5 years. That purchase is not the $800–$2,000 installation row. A water-powered backup has no battery, and it still needs a test so you know the city pressure is there.

Do I need a battery backup sump pump? Price the $800–$2,000 row, or the $1,200–$3,000 combined visit, when an outage and a rain can arrive together, the basement is finished, or you have already mopped once because the primary had no power. A water-powered unit, at $700–$1,600, is the version that needs municipal pressure instead of a battery. A dry unfinished basement, a young primary, and a discharge that already works is not a reason to add that row by default. The backup does not replace gutters that dump on the wall, and it does not replace a foundation that has moved.

How to use this number

Ask for a written price that names pedestal or submersible, the horsepower, whether the pit is existing or new, whether the discharge is reused or new, and whether a check valve, a permit, a dedicated circuit, an alarm, a backup, and any drain-tile tie-in are included. Compare a replacement in an existing pit with $500–$1,500. Compare a new pit with $1,500–$4,500. Compare a pedestal with $400–$1,100, a 1/3 HP submersible with $500–$1,200, a 1/2 HP with $700–$1,500, and a 3/4 HP with $900–$1,800. Compare a battery backup with $800–$2,000, a water-powered backup with $700–$1,600, and a primary plus battery on one visit with $1,200–$3,000. Keep a buried discharge, a French drain, basement waterproofing, a foundation repair, new gutters, and a whole-house repipe as their own lines.

A very low bid on a new pit is a reason to ask whether the pump, the discharge, the cover, and the permit are included, not a reason to celebrate. A replacement quote near $400 should say pedestal, and it should say the old discharge stays. A high bid should point at a new pit, horsepower, a backup, access, or tile. Two or three local bids on the same pit and the same pump are the number that matters. How this site sets the band is explained on the methodology page.