Water damage repair cost calculator

Built on published national cost data · free, no signup

By Sam Arora, Founder & Editor · Reviewed against IICRC S500 / III / FEMA guidance · Updated July 2026

Answer five questions and get an honest planning range for professional water damage mitigation (the emergency stop-the-damage work: extraction and drying) — the same factors a restoration estimator prices first: area, contamination category, standing water, how long it's been wet, and how far it spread.

Affected floor area (sq ft)A typical bedroom is ~130 sq ft; a basement is often 500–1,000+.

What kind of water?

burst supply pipe, faucet line, rainwater

Is water still standing (pooled) in the space?

How long has it been wet?

How far did the water spread?

This maps to the IICRC S500 “class” of damage — currently Class 2.

Your state (optional — adjusts for labor market)

Worked example: 300 sq ft, clean water (Cat 1), no standing water, dried within 24h, one whole room (Class 2) — change the answers above to fit your loss.

Your first bill (mitigation & drying)$1,150 – $1,600

$1,150$1,600

Planning range for professional mitigation & drying — the national average job runs $1,300–$5,600, and severe Cat 3 events can exceed $10,000.

The later bill (rebuild)$600 – $3,350

$600$3,350

Rebuild is a separate trade — new drywall, flooring, paint, and trim — priced at roughly $20–$37/sq ft nationally (2026) and quoted only after the space is dry and the damage is fully exposed. The rebuild scope scales with contamination and how long materials stayed wet: fresh clean-water losses are mostly dried in place, while black water or days-wet materials mean most affected finishes are removed and replaced. It is not included in the mitigation number above.

Plan for (total)$1,750 – $4,900

$1,750$4,900

Combined planning figure so you can see full potential out-of-pocket before insurance. Actual rebuild scope varies with how much material must be removed; get a firm reconstruction quote once drying is complete.

Drying & restoration, clean water (cat 1): ~$3.75–$5.25/sq ft × 300 sq ft
Spread: A whole room, walls wet under ~2 ft (IICRC Class 2) → ×1 on the drying range
Clean-water losses are usually dried in place under the IICRC S500 — prompt professional drying keeps the rebuild line low, so treat the reconstruction figure as a cautious ceiling, not a likely bill.

Planning range from published national data — not a quote. Only an on-site assessment prices your actual loss.

Worked example: 400 sq ft, clean water (Cat 1), standing water, dried within 24h — at $3.75–$5.25/sq ft that's roughly $1,500 – $2,100 for mitigation & drying (standing water pushes quotes toward the top of that range), with the rebuild line near zero because early-caught clean water is usually dried in place. The calculator needs JavaScript; here is the same published math it runs on:

Input

Effect on the estimate

Clean water (Cat 1)

$3.75–$5.25 per sq ft of affected area

Gray water (Cat 2)

$4.50–$6.50 per sq ft

Black water (Cat 3)

$7.00–$12.00 per sq ft

Standing water

Extraction is included in professional per-sq-ft rates; pooled water pushes quotes toward the top of the range

Wet more than 72 hours

Add $1,100–$3,400 for likely mold remediation (published national range)

Your state

±15–20% for clearly high- or low-cost labor markets

Standing water right now?

Every hour it sits, water damage gets more expensive — drywall wicks water upward and mold can start within 24–48 hours. Restoration pros run 24/7 emergency lines — the industry standard is to be on-site within 1–4 hours of your call.

Do this first → the 60-minute emergency checklist

Run a restoration company serving this area? This page's exclusive call slot is open — see the founding-partner offer →

Need a pro fast?

Call your insurer's 24-hr claims line first — most dispatch a vetted mitigation firm and pay it directly.
Search the IICRC Global Locator (iicrc.org → Locate a Certified Professional) and filter for Water Damage Restoration (WRT).
Whoever you call, ask three questions: Are you IICRC-certified? Will your written scope state the water category? Do you bill my insurer directly? If anyone demands a large cash payment before work starts, hang up.

How we make money: no page carries a sponsored number today, so none is listed. If one ever is, the single company that answers would pay us — a flat monthly sponsorship for that page's exclusive call slot, or a licensed referral fee — never you. If there is no number on this page, nobody paid to be here. You never pay us anything, and you're always free to call any company directly instead.

Don't know your insurer's number? Tap your company:

These are the insurers' own public claim lines — we are not affiliated and earn nothing from these calls.

State Farm: 800-732-5246 (800-SF-CLAIM)
Allstate: 800-255-7828 (1-800-ALLSTATE)
USAA: 800-531-8722 (800-531-USAA)
Liberty Mutual: 800-225-2467 (800-2CLAIMS)
Farmers: 1-800-435-7764 (1-800-HELPPOINT)
Travelers: 1-800-252-4633 (1.800.CLAIM33)
Nationwide: 1-800-421-3535
American Family: 1-800-692-6326 (1-800-MYAMFAM)
Chubb: 1-800-252-4670 (1-800-CLAIMS-0)
Erie Insurance: 800-367-3743, option 1

How this calculator works (and what it can't know)

Figures here are the published national ranges. Our per-city pages show the same ranges adjusted for local labor (a skeptic cross-checking will see slightly different numbers there — that's the adjustment, stated on each city page, not a different source).

Restoration pricing starts from the IICRC S500 (the industry standard rulebook for water restoration). It classifies water by contamination: Category 1 (clean, from a sanitary source like a supply pipe), Category 2 (gray — appliance discharge, roof leaks), and Category 3 (black — sewage or rising floodwater). Category drives cost more than anything else: Cat 1 can often be dried in place, while Cat 3 usually means removing carpet, drywall and insulation. The same standard also grades how far the water spread — Class 1–4 — which is why the calculator asks about spread and scales the range accordingly.

We multiply your affected area by the published per-square-foot range for that category (~$3.50–$7.50 (HomeGuide)), scale it by the S500 class of spread (×0.85 to ×1.3), note extraction when water is still pooled (it's included in professional per-sq-ft rates but pushes quotes toward the top), add the published mold-remediation range (roughly $1,100–$3,400 (Angi)) when water has sat past 72 hours, and apply a disclosed ±15–20% adjustment for clearly high- or low-cost labor markets. What no calculator can see: hidden water paths inside walls, wet insulation, subfloor damage, and access difficulty — which is why the output is a planning range, and the only real number is an on-site assessment (reputable firms inspect free).

What typically drives the bill up

Factor	Why it matters
Time wet > 24–48h	Mold can begin colonising within 24–48 hours; past ~72 hours remediation is likely, adding $1,100–$3,400.
Water category	Cat 3 roughly doubles Cat 1 per-square-foot cost — contamination forces removal instead of drying.
Wet building cavities	Water inside walls/ceilings needs opening up, more equipment, longer drying.
Finished basements	More materials to remove and rebuild than unfinished space.
Rebuild scope	Mitigation dries the structure; drywall, flooring and paint are a second, separate line.

Common questions

How much does water damage restoration cost per square foot?

Industry cost guides put professional water damage restoration at roughly $3.50–$7.50 per square foot depending on the water category: clean supply-line water sits at the bottom of the range, and contaminated (black) water at the top because porous materials usually must be removed and the space sanitised.

What is the average cost of water damage repair?

The national average for professional water damage restoration falls between $1,300 and $5,600 per incident. Severe events — deep flooding, sewage, or long-standing water — regularly exceed $10,000 once demolition and rebuild are included.

Does the estimate include rebuilding walls and flooring?

It shows them as two separate lines, the way real losses bill: your first bill (mitigation and structural drying) and a later rebuild line (replacement drywall, flooring, trim, paint) that scales with contamination and how long materials stayed wet. Firm rebuild quotes only come after the structure is verified dry, because the extent of demolition isn't known until drying is complete.

Will insurance pay for this?

Standard homeowners policies generally cover water damage that is sudden and accidental (like a burst pipe) but exclude gradual leaks, poor maintenance, and outside flooding — flood needs a separate policy. Use our insurance claim estimator to check your scenario.

Next: check what insurance is likely to pay with the insurance claim estimator, or if this is happening right now, follow the first-60-minutes checklist.

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Sources & methodology

Every figure on this page comes from the published references below — never invented, never inflated. Costs are national ranges; your local market, access, and materials move real quotes in both directions.

This is general information, not insurance, legal, or engineering advice. Estimates are planning ranges, not quotes — always get on-site assessments, and confirm coverage against your own policy wording or with your insurer.