Water Damage Restoration Cost Calculator
Estimate what restoring a water-damaged area will cost from the numbers on your own quote — the affected floor area, the price per square foot, the IICRC water category and a contingency buffer.
Calculator
Restoring 500 sq ft at $4.50/sq ft with a 1.00× category factor plus $600.00 of line items comes to about $3,135.00 with a 10% buffer. Category 2/3 water costs more to handle safely — enter your quoted price; this is a planning estimate, not a bid.
Water damage is priced two ways at once: a rate per square foot for the labor and materials to dry, demo and restore the affected area, plus fixed line items for equipment rental, disposal and containment. The IICRC water category multiplies the base rate, because gray and black water demand more removal, sanitizing and protective equipment. A contingency buffer covers the hidden damage that only appears once the crew opens up walls and floors.
This tool keeps your quoted prices — it stores no price list of its own, so the estimate stays honest whatever your local rates are.
Formula
total = (affected_sqft × price_per_sqft × category_mult + line_items) × (1 + contingency%)
The base is area × rate × category; line items are added before the contingency buffer is applied to the whole subtotal.
Worked example
A 500 sq ft room of Category 1 clean water at $4.50/sq ft with $600 of drying equipment and a 10% contingency:
(500 × $4.50 × 1.0 + $600) × 1.10 = ($2,250 + $600) × 1.10 = $3,135
Switch the category to gray (1.3×) or black (1.7×) and the base climbs accordingly, because the work to handle contaminated water safely is genuinely more.
How to read the estimate
Restoration quotes vary far more than most cost tables admit, because the category and class of the water, the materials involved (carpet vs. hardwood vs. tile), access, and how long the water sat all change the job. That is why this calculator asks for your rate rather than inventing one. Use the labeled $3–$8 per sq ft band only as a sanity check on the number your contractor gave you.
Water that is left more than 24–48 hours degrades a category, invites mold, and pushes the cost up — the fastest way to keep a claim small is to start extraction and drying immediately. Restoration is post-event cleanup and drying; fixing the source (a burst pipe, a failed appliance, a roof leak) is a separate trade and a separate line.
Reference table
The IICRC rates how contaminated the water is. These are labeled planning multipliers you can override — Category 2/3 water costs more to handle safely.
| Water category | Typical multiplier |
|---|---|
| Category 1 — clean water (supply line, rain) | 1.0× |
| Category 2 — gray water (appliance, sump) | 1.3× |
| Category 3 — black water (sewage, flood) | 1.7× |
Typical water-damage restoration runs about $3–$8 per sq ft — a labeled sanity band, not a price index. Enter the rate from your own quote.