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Water still coming in? Shut off the main valve first. First-hour checklist
Cost guide

Sewage Backup Cleanup Cost (2026)

Cleaning up a sewage backup costs $3,750⁠–⁠$8,100 for a toilet or floor drain backing up into a small bathroom (100 sq ft), and $10,400⁠–⁠$21,900 for a 500 sq ft finished basement, from cleanup through repairs. In an unfinished basement with nothing to tear out, it’s $2,650⁠–⁠$5,750.

By Erik Leavell, Editor Updated Oct 2026 · 19 sources
Murky water pooled around a floor drain in an unfinished basement laundry area, with a caution sign
Cleanup and repairs 500 sq ft finished basement, sewage

$10,400–$21,900

Drying and tear-out$5,250–$11,550
Repairs after drying$5,150–$10,350

Cleanup alone, the drying and tear-out, is $5,250⁠–⁠$11,550. The rest is putting the basement back.

Estimate your cost Check a quote Built from 10 published price sheets, trade wages and store prices.

Water Damage Cost Calculator

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1What kind of water?
2How long since it started?
sq ft
A 12 by 12 ft room is 144 sq ft.
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4What got wet?Pick all that apply

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Your estimate

$10,400–$21,900

Drying, tear-out and repairs. National prices. Add your ZIP for local ones.

Drying and tear-out$5,250–$11,5504–5 days, right away
Repairs after drying$5,150–$10,350Drywall, paint, vinyl plank and baseboard
See the line items
Estimate by line item
Drying and tear-out
Emergency service call1 visit$118–$279
Water extraction500 sq ft$370–$545
Air movers36–45 unit-days$924–$1,633
Dehumidifiers4–5 unit-days$407–$830
Air scrubber4–5 unit-days$293–$586
Technician: setup, daily checks, pickup11–12 hours$519–$800
Tear out wet hard flooring500 sq ft$2,060–$3,665
Flood cut drywall506 sq ft$521–$1,143
Antimicrobial500 sq ft$60–$115
Overhead and profitSome companies add 10% + 10%$0–$1,919
Drying and tear-out4–5 days of drying$5,250–$11,550
Repairs after drying
Hang and finish new drywall506 sq ft$1,761–$2,859
Prime new drywall506 sq ft$132–$218
Paint the walls, two coats860 sq ft$559–$1,239
New vinyl plank flooring500 sq ft$1,655–$2,525
New baseboard, installed and painted126 linear ft$673–$1,261
Trips and setup6 hours$379–$520
Overhead and profitSome companies add 10% + 10%$0–$1,724
Repairs$5,150–$10,350
TotalDrying, tear-out and repairs$10,400–$21,900

Drying and tear-out (mitigation) for a home, then the repairs after drying: drywall, paint, baseboard, flooring and base cabinets. Drying low end: lower-quartile rates from 10 published price sheets; high end: upper-quartile rates and a day more drying. Repairs are built from published labor hours, local trade wages and store prices for materials, and checked against public price sheets. Both high ends add overhead and profit. Totals are rounded out to the nearest $50, so line items may not add up exactly. How we built it

Final price comes from an on-site inspection.

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Cost factors

What drives the cost

Sewage is Category 3 water, the dirtiest kind. That changes what has to come out and how long drying takes.

  • More comes out

    Porous things that sewage soaks can’t be cleaned. Our calculator cuts drywall 4 ft up for sewage, against 2 ft for gray water, and takes out hard floors as well as carpet. One 200 sq ft room costs $4,700⁠–⁠$10,050, against $3,650⁠–⁠$7,850 for gray water.

  • Hard floors cost more

    Tearing out and replacing vinyl plank costs more than carpet. The same 500 sq ft basement runs $10,400⁠–⁠$21,900 with hard floors and $8,900⁠–⁠$18,850 with carpet.

  • Cabinets

    Base cabinets that sewage soaks are replaced, at $120⁠–⁠$240 per foot before overhead and profit. A 200 sq ft kitchen with a run of cabinets comes to $6,500⁠–⁠$14,200.

  • Finished or not

    An unfinished basement with a concrete floor and open walls has little to tear out or rebuild: 500 sq ft runs $2,650⁠–⁠$5,750, mostly cleanup and drying.

Sewage is the most expensive water to clean up

  1. Category 1 Clean water Burst supply line, clean sink overflow $$$Lowest cost
  2. Category 2 Gray water Washing machine, dishwasher, aquarium $$$Higher cost
  3. Category 3 Black water Sewage, sewer backflow, floodwater from outside $$$Highest cost
Water categories and classes explained
Where the money goes 500 sq ft finished basement, sewage, hard floors · cleanup and repairs · typical ranges
  • Water extractionPumping and vacuuming out the water $370–$540
  • Drying equipment Check the daily logAir movers and dehumidifiers, billed per day $1,620–$3,050
  • Technician timeEmergency call, setup, daily moisture checks, pickup $640–$1,080
  • Tear-outHard flooring, drywall cut 4 ft up $2,580–$4,810
  • AntimicrobialApplied to wet materials $60–$120
  • Drywall and paintNew drywall along the cut, primed, walls repainted $2,450–$4,310
  • New flooringCarpet and pad, or vinyl plank $1,660–$2,520
  • BaseboardInstalled and painted $670–$1,260
  • Trips and setupTravel and setup for each trade $380–$520
  • Overhead and profitSome companies add 10% + 10% $0–$3,640
Total, 500 sq ft basement$10,400–$21,900
By situation

Cost by situation

Each range is the calculator’s answer for a typical case at national prices, from cleanup through repairs.

  • Small bathroom100 sq ft, tile or vinyl floor and drywall $3,750–$8,100
  • One carpeted room200 sq ft, carpet and drywall $4,700–$10,050
  • Kitchen with cabinets200 sq ft, hard floor, drywall, 10 ft of base cabinets $6,500–$14,200
  • Unfinished basement500 sq ft, concrete floor, open walls $2,650–$5,750
  • Finished basement, carpet500 sq ft, carpet and drywall $8,900–$18,850
  • Finished basement, hard floors500 sq ft, vinyl plank and drywall $10,400–$21,900
Check your quote

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Sewage jobs get lump sums like “biohazard cleanup” that are hard to compare. Upload your quote and we’ll check it line by line.

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What you get back

A fair quote shows

  • Category 3, and where the sewage came from
  • Which rooms the sewage reached, with square footage
  • Drywall cut height and square footage
  • Cleanup priced apart from rebuilding

Red flags

  • A “biohazard” or “sewage remediation” lump sum with no quantities
  • Sewage-grade charges for rooms the sewage never reached
  • Being told you have to sign an assignment of benefits
See the full price list
Insurance

Will insurance pay?

Usually not, unless you added water backup coverage. Standard homeowners policies exclude water that backs up through sewers and drains, and the add-on usually has its own limit.

Usually covered

  • Backup through a sewer or drain, with a water backup endorsement
  • Sump overflow when the pump fails (not the pump itself), under many backup endorsements
  • Backup caused directly by a flood, under flood insurance

Usually not covered

  • Backup on a standard policy without the endorsement
  • Costs above the endorsement’s limit
  • Backup from anything other than a flood, under flood insurance

Check your policy’s declarations page for water backup coverage.Does homeowners insurance cover water damage?

First hour

Before the cleanup crew arrives

  1. 1

    Stop using water and drains

    Every flush, shower and load of laundry can push more sewage up through the lowest drain.

  2. 2Safety

    Keep people and pets out

    Children, older people and anyone with a weakened immune system are at higher risk of getting sick, so keep them away.

  3. 3Safety

    Gear up if you go in

    Wear rubber boots, gloves and eye protection, and wash your hands well afterward.

  4. 4

    Photograph it and report it

    Call your insurer. If the city’s sewer main caused it, file a claim with the city quickly: New York City allows 90 days, Michigan 45.

Full first-hour checklist
FAQ

Questions people ask

Does homeowners insurance cover a sewage backup?

Not on a standard policy. Sewer backups need their own coverage, bought as an endorsement or a separate policy, the Insurance Information Institute says. The endorsement usually has its own limit; New Jersey’s insurance department says it’s usually $5,000. Flood insurance covers a backup only when a flood directly caused it.

Can I clean up sewage myself?

A small toilet overflow on a tile floor, yes, with rubber boots, gloves and disinfectant. Once sewage soaks into carpet, drywall or furniture, those have to go: the CDC says to throw away items that can’t be disinfected, like wall coverings, rugs and drywall. That tear-out and drying is what the cleanup price covers.

Who pays when the city sewer backs up?

It depends on where the blockage was and on local rules. The homeowner is usually responsible for at least part of the line between the house and the public main; in New York City and Fairfax County, for the whole line, even under the street. If the city’s main caused the backup, you may be able to claim from the city, but deadlines are short: 90 days in New York City, and 45 days from discovering the damage in Michigan, where you also have to show the city knew or should have known about the defect and didn’t fix it in reasonable time.

What causes sewer backups?

Grease, wipes and other things that shouldn’t be flushed, tree roots growing into the line, and heavy rain overloading older systems that carry storm water and sewage in the same pipes. The EPA lists fats, oils and grease, wipes and roots as common causes of sewer overflows.

How do I stop it happening again?

A backwater valve lets sewage flow out but not back in, the Insurance Information Institute says; a plumber installs it on your main line. Keep grease and wipes out of the drains, and find your sewer cleanout, the capped pipe that lets a plumber clear a blockage.

Why does sewage cleanup cost so much more?

Sewage is Category 3 water, which can carry germs that make people sick, so more comes out and drying takes longer. In our calculator that means drywall cut 4 ft up instead of 2, hard floors removed, antimicrobial on everything wet and a day or more of extra drying. One 200 sq ft room costs $4,700⁠–⁠$10,050, against $3,650⁠–⁠$7,850 for gray water.

How we got these numbers

Drying prices come from 10 published price sheets. Repair prices are built from published labor hours, federal wage data for each trade and store prices for materials, then checked against public repair price sheets. Both are adjusted for labor costs near your ZIP. Ranges are national until you add one. Read the full methodology.

  1. Published restoration price sheets (state and county contracts, contractor price lists), RestoreCost. 10 published price sheets, collected Oct 2026.
  2. Seabee Planner’s and Estimator’s Handbook (NAVFAC P-405), U.S. Navy. Labor hours for repairs. 1996 edition.
  3. Occupational Employment and Wage Statistics, May 2025, U.S. Bureau of Labor Statistics. Trade wages by metro. Checked Oct 2026.
  4. Category of Water Damage and Weather-related Events (S500 position statement), IICRC. Feb 10, 2026.
  5. Floodwater after a disaster or emergency, CDC. Updated Aug 24, 2026.
  6. Flooding and sewage back-ups: home care guide, Massachusetts DEP and Department of Public Health. Checked Oct 2026.
  7. Sewage backup FAQ (2019 Jamaica, Queens incident), NYC Emergency Management. Checked Oct 2026.
  8. Which disasters are covered by homeowners insurance?, Insurance Information Institute. Checked Oct 2026.
  9. Protect your house from sewer backups, Insurance Information Institute. Checked Oct 2026.
  10. Insuring your home, New Jersey Department of Banking and Insurance. Checked Oct 2026.
  11. Water and Sewer Backup Coverage (FIS-PUB 6380), Michigan Department of Insurance and Financial Services. Oct 2020.
  12. Sewer backup, Minnesota Commerce Department. Modified Jul 30, 2026.
  13. What flood insurance covers, FEMA FloodSmart. Checked Oct 2026.
  14. Sewer backup, NYC Department of Environmental Protection. Checked Oct 2026.
  15. Property damage claim FAQs, NYC Comptroller. May 2026.
  16. Residential wastewater service, Fairfax County Public Works. Modified Sep 15, 2026.
  17. Public Act 222 of 2001 (sewage disposal system events), State of Michigan, via the City of Grand Rapids. Notice within 45 days.
  18. Sanitary sewer overflow: frequent questions, U.S. EPA. Updated Apr 13, 2026.
  19. Sewer cleanouts, Anne Arundel County Department of Public Works. Checked Oct 2026.