Using the calculator
How to use the water damage restoration cost calculator.
Use this calculator as a planning tool before you talk to a contractor. It gives a low, typical, and high range so you can compare quotes against a visible set of assumptions instead of relying on one national average.
Start with the inputs you know.
- Enter your repair details. Select the repair type, scope, and any variables that match your situation. The more accurate the inputs, the closer the range will be to a real contractor quote.
- Adjust for severity and access. The calculator adjusts the base cost for condition severity and site access. If you are not sure, leave the defaults — they reflect the most common scenario.
- Review low, typical, and high. The output gives three numbers. Low reflects minimal scope. Typical reflects the most common project. High reflects complex conditions or larger access requirements.
- Bring the range to your contractor conversations. If a quote lands above the high or well below the low, ask the contractor to walk through their scope assumptions. A well-scoped quote rarely falls outside the range.
What changes the price.
The largest price swings usually come from repair method, measured severity, access, and what the quote excludes. For water damage restoration, these are the main factors to review:
- Affected square footage and how many rooms or levels the water reached
- Water category: clean, gray, or black, which sets the per-square-foot rate and safety requirements
- How long the water sat, since saturation depth and mold risk grow by the day
- Scope: drying and mitigation only, or full repairs and reconstruction after drying
- Insurance involvement, documentation quality, and whether the cause is a covered peril
How to read the estimate range.
The low range, around $1,400, reflects minimal scope and favorable site conditions. The typical range, around $3,870, is the most useful comparison point for an average project. The high range, around $20,000 or more, is where complex conditions, difficult access, or larger scope start to matter.
Most water damage restorations run $1,384 to $6,384, with a national average near $3,867. Mitigation is priced at $3 to $7.50 per square foot by water category, and repairs add $20 to $37 per square foot. Long-standing or flood-level damage, Class 4, can run $20,000 to $100,000.
Common project scenarios.
- Clean water, caught early: $1,400 to $3,000. A supply line or appliance leak dried within the first day, with limited material removal and drying at $3 to $4 per square foot.
- Standard mitigation and repair: $3,000 to $6,400. One or two rooms with soaked drywall or flooring, full drying, and repairs to the removed materials.
- Contaminated water or large area: $6,000 to $20,000. Gray or black water, multiple rooms, or a flooded basement, where black water mitigation alone runs about $7 to $7.50 per square foot before repairs.
- Class 4, long-standing or flood: $20,000 to $100,000. Deep saturation from long-standing water, river flooding, or storm surge, involving structural drying, major demolition, and reconstruction.
What may not be included.
- Repairs and reconstruction: drywall, insulation, flooring, trim, and paint are a second scope, often a second bill
- Plumbing or roof repair of the water source itself
- Contents pack-out, cleaning, and storage unless itemized
- Mold remediation if water sat long enough for growth to start
- Your insurance deductible and anything the policy excludes, such as exterior flood water without flood insurance
Use the number in contractor conversations.
The estimate is a reference point, not a final answer. If a contractor quote lands far above the high range or unusually far below the low range, ask what scope assumptions explain the difference.
- Which water category are you classifying this as, and what does that change in the scope?
- What are the moisture readings now, and will I get daily drying logs?
- What exactly is being removed versus dried in place, and why?
- Is this quote mitigation only, or does it include repairs and reconstruction?
- Will you document everything to insurance standards and work with my adjuster?
Read the Water Damage Restoration guideSee the full cost breakdownPrepare a quote request