Check moisture before you rebuild
Ask for pin readings of the subfloor, not just the room air. Fans and a dehumidifier should stay until those readings are dry. Wet OSB left under new flooring swells and can grow mold.
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Water damage costWater damage restoration cost calculator
Estimate the cost to dry out and rebuild after a leak or flood: extraction and drying, flood-cut drywall, flooring and mold, split into mitigation and rebuild, with a check on what insurance is likely to cover.
Reviewed 8 October 2026
Written and maintained byMantu Kumar
Evidence review8 October 2026
Calculation rulesRead the methodology
Quality standardEditorial policy
Key facts at a glance
- Average water damage restoration is about $3,300; jobs range from $150 to $100,000.
- Most jobs run $1 to $15 per sq ft, depending on category and class.
- Drying and dehumidification: $1,000–$12,000; mold remediation $500–$12,000.
- Dry wet materials within 24 to 48 hours to prevent mold.
- Sudden pipe bursts are usually covered; floods need flood insurance.
- Sewer backup needs a water backup endorsement.
Sources: HomeServe, EPA and FEMA FloodSmart, listed at the end of this page.
Water damage restoration estimate
No email · nothing sentInside a water-damaged room
See what comes out before anything goes back in
Water damage is priced in layers: what gets dried, what gets cut out and what gets rebuilt. The photograph shows the flood cut, the exposed subfloor, drying equipment and flooring lifted for a moisture check.
The three detail views below enlarge parts of the same photograph. Use them with the checks underneath.
Ask how high the drywall was cut
Water wicks up above the visible line. A straight cut, often 2 feet and sometimes 4, lets the cavity dry. Category 3 water means the wet porous material comes out rather than being dried.
Decide what can be saved
Clean-water carpet can sometimes be dried. Laminate and most wood swell and are replaced. Keep a sample for the adjuster and for matching.
Before you approve the restoration scope, confirm these
- Category and class
- The IICRC water category and how far the water spread
- Drying log
- Daily moisture readings and the number of fans and dehumidifiers
- Rebuild scope
- Flood cut height, insulation, baseboards, paint and flooring to match
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On this page
Water categories decide the method
Restoration companies follow the IICRC classification. The category describes how contaminated the water is, and it decides what can be dried in place and what has to be removed.
| Category | Typical source | What it usually means |
|---|---|---|
| 1: clean | Supply line, rain through a roof | Dry in place where possible; carpet may be saved if dried fast |
| 2: gray | Washer, dishwasher, toilet overflow (no waste) | Remove pad and porous materials, treat with antimicrobial |
| 3: black | Sewage, river or surface flooding | Remove porous materials, flood cut at least 2 ft, sanitize |
Water damage classes and typical cost
The class describes how far the water spread and how much it soaked into materials, which decides how long drying takes. Category is about contamination; class is about the size of the job.
| Class | What it means | Typical cost |
|---|---|---|
| Class 1 | Part of one room, little water absorbed | $150 – $500 |
| Class 2 | A whole room; water wicked up walls and into carpet | $1,500 – $5,000 |
| Class 3 | Saturated walls, insulation and subfloor, often water from above | $5,000 – $15,000 |
| Class 4 | Deep, bound moisture in hardwood, plaster or concrete; specialty drying | $15,000 – $100,000 |
Cost by type of repair
| Repair | Typical cost |
|---|---|
| Emergency water removal | $500 – $6,000 |
| Cleanup, demolition and debris removal | $1,500 – $15,000 |
| Drying and dehumidification | $1,000 – $12,000 |
| Mold remediation | $500 – $12,000 |
| Drywall repair or replacement | $2 – $6 per sq ft |
| Carpet replacement | $2 – $8 per sq ft |
| Hardwood flooring, installed | $9 – $25 per sq ft |
| Basement and foundation repairs | $1,000 – $20,000 |
| Structural reconstruction | $5,000 – $100,000 |
Drying first, rebuilding second
A water loss has two bills. Mitigation is extraction, drying equipment, removing wet drywall and antimicrobial treatment, usually over three to five days. Rebuild is new drywall, baseboards, paint and flooring once moisture readings are dry. The calculator splits the two because they are often done by different companies and paid at different times.
The EPA advises drying wet materials within 24 to 48 hours to prevent mold. Every day of delay adds equipment time and makes it more likely that drywall, insulation and flooring have to go.
Flood cuts, baseboards and flooring
A flood cut removes drywall in a straight line above the waterline, commonly 2 or 4 feet, so the wall cavity can dry and a clean patch can be hung. The calculator estimates wall area from the floor area and number of rooms, then prices drywall removal and replacement, baseboards and paint. Flooring is priced at the same installed rates as the flooring calculator, plus removal of the wet material.
When mold is involved
Visible mold or drying that started late adds remediation: containment, removal of affected materials, HEPA cleaning and clearance testing. The EPA suggests a professional for areas larger than about 10 square feet. Many policies cap mold coverage at a lower limit, often a few thousand dollars, so check yours.
Will insurance pay for water damage?
- Sudden and accidental water from inside the home, such as a burst pipe or failed appliance hose, is usually covered.
- Slow leaks over weeks or months are usually excluded as wear and maintenance.
- Flood and surface water are excluded from homeowners policies and need separate flood insurance.
- Sewer and drain backup needs a water backup endorsement, often with its own limit.
The pipe or appliance that failed is usually not covered, only the damage the water caused. If the loss is close to your deductible, run should I file a claim before you report it.
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Questions
How much does water damage restoration cost?
For 300 sq ft of clean water damage in two rooms, with a 2 ft flood cut and vinyl plank flooring, this calculator returns about $3,500 to $7,400 at the national average. Sewage or flood water, late drying and mold can raise that to tens of thousands.
What is the difference between Category 1, 2 and 3 water?
Category 1 is clean water, such as a supply line. Category 2 is gray water with some contamination, such as a washing machine. Category 3 is black water from sewage or flooding, which requires removing porous materials and sanitizing.
What is a flood cut?
A straight cut through drywall above the waterline, usually at 2 or 4 feet, so the wall cavity can dry and the lower panel can be replaced cleanly.
How fast does mold grow after water damage?
Mold can begin to grow within 24 to 48 hours, which is why the EPA advises drying wet materials within that window.
Does homeowners insurance cover water damage?
Sudden and accidental water damage from inside the home, such as a burst pipe, is usually covered. Gradual leaks are usually excluded, flood needs separate flood insurance and sewer backup needs an endorsement.
Is mitigation paid separately from the rebuild?
Often, yes. A restoration company bills for extraction and drying, and a contractor bills for the rebuild. Insurers usually pay both under one claim, minus one deductible, if the cause is covered.
Can wet carpet be saved?
Sometimes, after clean water that is extracted and dried within a day or two. The pad is usually replaced. Carpet soaked by gray or black water is normally removed.
Related
- Should I file a claim? — compare the payout with the premium increase
- Flooring cost calculator — price the new floor in detail
- Claim gap calculator — what an ACV policy would pay
- What insurance actually pays — covered causes and exclusions
How to use this result
This is a planning range, not a restoration quote or a coverage decision. A restoration company’s moisture mapping sets the real scope. Plumbing repair, contents, temporary housing and code upgrades are not included.
Evidence trail
Reviewed 8 October 2026Sources used to check this tool
Cost ranges come from published restoration cost guides; categories from the IICRC classification; mold timing from the EPA.
Restoration costHomeServe water damage cost guide
IICRC categoriesRytech: water damage categories and classes
Mold and dryingEPA: A Brief Guide to Mold, Moisture and Your Home
Flood coverageFEMA FloodSmart (NFIP)
These organizations do not endorse ReplaceCost. The written policy, program rules, contractor scope and applicable law control the real result. See the full methodology for the source hierarchy and update process.
Water damage
Price drying and rebuild before anyone starts cutting
The category, the delay and the cause decide the scope and who pays for it.
Water category
Clean, gray or black water sets the removal method.
Mitigation vs rebuild
Drying and demolition are billed apart from repairs.
Flood cuts
Drywall removed above the waterline so walls can dry.
Coverage
Sudden leaks are usually covered; floods and slow leaks are not.
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