How much does water damage restoration cost?
HomeAdvisor's June 2026 national figures put the average job at about $3,868, with most homeowners paying between about $1,383 and $6,369, and a full range from roughly $450 to $16,000. These are national numbers, not Naperville quotes.
The spread is wide because "water damage" covers everything from a dishwasher leak on a tile floor to a finished basement that sat in sewage for two days. The only real number is the one a company gives you after looking at your home. The rest of this guide explains why two jobs in the same subdivision can differ by thousands.
Why does the type of water change the price?
Because contaminated water takes more removal, cleaning and protective work. HomeAdvisor lists the drying and cleanup work at roughly $3.50 per square foot for clean (Category 1) water, $5.25 for gray (Category 2) and $7.50 for black (Category 3).
Those categories come from the IICRC S500, the industry's restoration standard. Category 1 is clean water from a sanitary source like a supply line. Category 2 has significant contamination, like washing machine discharge. Category 3 is grossly contaminated, like sewage from a floor drain or floodwater. With Category 3, porous materials it touched, like carpet pad and the bottom of drywall, usually come out rather than being dried. And because clean water degrades as it sits, a slow response can push a Category 1 job into a higher category. See the categories section of our guide.
What else drives the cost?
The size of the wet area, how far water wicked into walls and floors, how long it sat, whether the space is finished, whether mold has started, and how much has to be rebuilt.
- Square footage and spread. Water travels under walls and flooring. Moisture meters often find wet material beyond the visible stain.
- Finished versus unfinished space. A concrete basement floor mostly needs extraction and drying. Carpet, pad, drywall, insulation and trim add removal and rebuild costs.
- Time. The EPA says to dry water-damaged areas within 24 to 48 hours to prevent mold growth. Past that, mold remediation can join the bill; HomeAdvisor lists mold removal at roughly $1,100 to $3,400.
- Drying class. Water from above that soaked ceilings and insulation, or water in dense materials like hardwood and concrete, needs more equipment for longer.
- Rebuild scope. New drywall, paint, flooring and cabinets are usually the biggest dollar items, and in Naperville a basement remodel needs a city permit.
What is the difference between mitigation and restoration?
Mitigation is the work that stops damage from getting worse: extraction, removal of wet materials, cleaning and drying. Restoration, or rebuild, is putting the space back together. They are often estimated, and paid, separately.
Many restoration companies do mitigation themselves and either do the rebuild or hand it to a general contractor. Insurers often handle the two as separate line items. Ask up front which parts a company will do, so you are not surprised to need a second contractor.
How do I read a water damage estimate?
Look for clear line items for inspection, water extraction, material removal, cleaning or antimicrobial treatment, equipment (air movers and dehumidifiers, usually priced per day), monitoring visits, and disposal, then a separate rebuild section.
| Line item | What it means | What to ask |
|---|---|---|
| Inspection, moisture mapping | Finding the source and how far water spread | Can I see the moisture map or readings? |
| Water extraction | Pumping or extracting standing water | Is this priced by area or by hour? |
| Remove carpet, pad, drywall, insulation | Taking out what cannot be dried or cleaned | Why can this not be dried in place? |
| Antimicrobial or cleaning | Treating surfaces, especially after Category 2 or 3 water | Which surfaces, and what product? |
| Air movers and dehumidifiers | Drying equipment, usually per unit per day | How many units, how many days, and how will you decide when it is dry? |
| Monitoring | Visits to take readings and adjust equipment | Will I get the readings in writing? |
| Debris and disposal | Hauling away removed materials | Is this included or separate? |
| Rebuild | Drywall, paint, flooring, trim, cabinets | Who does it, and who pulls the permit? |
A reasonable estimate explains the "why" behind removal and the plan for drying. If equipment is billed per day, the moisture readings are what justify each extra day. Ask for them.
Will insurance pay for it?
If the cause is covered, your insurer typically pays the reasonable cost of mitigation and repair minus your deductible. A sudden burst pipe is generally covered; sewer backups need an endorsement; flood needs a separate policy.
Our Illinois insurance guide goes through each case and the paperwork that helps.
How can I keep the cost down?
Act early: stop the water, get belongings off wet floors, and start professional drying inside the EPA's 24 to 48 hour window. Speed is the one cost factor you control.
- Shut off the water at the main for any pipe or appliance leak.
- Pull rugs, boxes and furniture out of the water.
- Run a dehumidifier if you have one and it is safe to plug in.
- Get more than one opinion on the rebuild if time allows. Mitigation usually cannot wait; the rebuild usually can.
- Ask for a written estimate before work starts.
Ready to get someone out to look at it? Call (630) 394-5205 and press 1, and we connect you with a local water damage restoration company. For everything else, read the Naperville water damage guide.