Burst pipe water damage: what it costs to dry out and repair

What a burst pipe does to a house

A supply line carries water under pressure. When it splits, it keeps running until someone closes a valve. A burst pipe in a wall, a failed water heater, a cracked toilet supply line, or a loose fitting under a sink can put a lot of water on the floor before anyone notices.

The water itself is clean. It comes from the same pipes as your drinking water, so restoration crews class it as clean water, Category 1. Clean water is the least expensive category to dry, and many materials it touched can be dried in place when the work starts early.

Water spreads further than it looks. It runs under baseboards, wicks into carpet pad and drywall, and travels along the subfloor into the next room.

Why the 24 to 48 hour window matters

EPA is direct about this: dry water-damaged areas and items within 24 to 48 hours to prevent mold growth. When wet materials dry inside that window, in most cases mold will not grow.

That window decides whether a mold job gets added to the water job. Drywall, pad, and insulation that stay wet grow mold, and materials that could have been dried in place come out instead.

What to do before help arrives

• Shut the water. Close the main shutoff where the water line enters the house. For a toilet or sink, the small valve on the wall behind it stops that line.
• Turn off power to wet rooms at the breaker if you can reach the panel without standing in water. Keep away from outlets, cords, and appliances in wet areas.
• Photograph everything before you move it: the break, the water on the floor, the wet walls, and damaged belongings. Insurance claims and restoration quotes both start with those photos.
• Move furniture, rugs, electronics, and boxes out of the water.
• Mop or wet vacuum standing water, open cabinets and closets, and run fans if the wiring in the room is dry.
• Keep the failed pipe, hose, or fitting. The plumber and the adjuster both want to see it.

What the restoration crew does

A plumber fixes the pipe first. A restoration crew dries the house.

The crew starts with extraction. Pumps and vacuums pull standing water out of carpet and off hard floors. Then they map the moisture. A meter reads drywall, baseboards, subfloor, and framing to find where the water went, which is usually further than the stain.

Drying comes next. Air movers push air across wet surfaces, and dehumidifiers pull the water out of the air. The crew takes readings each visit until materials reach a dry standard.

What comes out depends on how wet things got and how long they stayed wet. With clean water caught early, carpet can often be dried in place, and the pad under it is the usual loss. Drywall that reads dry stays. Drywall that stays wet, swollen baseboard, and soaked insulation inside a wall come out. Crews cut wet drywall to a clean line so the patch lands on a stud.

Restoration is priced per square foot of wet floor, at $3.00 to $7.50 overall, from published 2026 data (ServPro citing Angi).

What a burst pipe costs to dry out

Clean water sits at the low end of the rate. ServPro, citing Angi, puts clean water, minor at $3.50 per square foot of wet floor. Wet floor area drives the number, so one bathroom costs less than three rooms reached by the same break.

The national average for water damage repair is $3,865, and most homeowners pay between $450 and $16,000 (ServPro citing Angi). A supply line failure caught fast lands toward the low end. A pipe that ran for hours inside an upstairs wall lands higher.

If mold starts before the house dries, a mold line gets added. ServPro prices mold added to a water loss caught late at $1,200 to $3,800.

These are planning ranges from national data. A restoration company confirms scope and price on site. The estimate tool puts your numbers together.

Insurance and a burst pipe

A sudden burst pipe is the case homeowners policies typically cover, according to Insurance.com. Mold that follows can be covered too, and policies that cover mold typically cap it at $1,000 to $10,000. Some carriers start at $2,500 to $5,000.

A leak that dripped for a long time is a different claim. Insurance.com lists long-term leaks as excluded. That is one more reason to photograph the break and keep the failed part.

Call your agent before rebuild starts. Ask what the policy covers and what the adjuster needs to see. Read does homeowners insurance cover mold for the general picture. Nothing here is insurance advice.

When mold becomes the bigger job

A musty smell after the floors look dry means water is still somewhere. Check the wall the pipe ran through and the ceiling below it. EPA says to suspect hidden mold when a building smells moldy but you cannot see the source, and to bring in an experienced professional before disturbing it.

EPA also points to professional guidance when mold covers more than 10 square feet. The guide on the EPA 10 square feet rule explains the line. Mold remediation prices at $10 to $25 per square foot of affected surface (This Old House), on top of the water work.

After drying, keep indoor humidity below 60 percent, ideally between 30 and 50 percent, as EPA recommends.

The water damage hub covers the other sources, from roof leaks to sewage backup.