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Start with the mechanism, because Castle Rock prices the mechanism rather than the puddle. A freeze split is a finite event: once the line is repaired, the water stops and drying is a countdown the meter log can prove. Clay seepage and creek entry are reservoir problems: the ground keeps supplying moisture, and equipment days stretch until bentonite and the water table relent. Published national guides bracket the work itself at roughly $3 to $4 per square foot for clean water and $7 or more for contaminated water, with most single incident jobs totaling $1,500 to $5,000. On coverage, sudden failures inside the house, the split line, the failed heater, are the standard covered case; water arriving from outside, and sump failures, usually depend on a water backup endorsement being on the policy. Get the assessment in person and the estimate in writing; that document outranks every range on this page.
Read this table by its first column, because the mechanism is the price. A freeze split at 6,200 feet is winter's bill: finite water, a repaired line, and a drying countdown. Seepage is the soil's bill: bentonite swells, cracks, and then holds storm water against the foundation it opened, so the equipment stays until the ground, not the carpet, reads dry. Creek entry is the corridor's bill, set by Plum Creek's melt and storm calendar. The dollar anchors come from published national guides, $3 to $4 per square foot for clean water and $7 or more for contaminated, most single incidents between $1,500 and $5,000 all in, and they bend around those three mechanisms. A firm total quoted by phone, before anyone has read your walls, is a guess wearing a uniform.
| Job | Typical range | What moves it |
|---|---|---|
| Winter scope: split line extraction, wall cavity drying | $1,150 to $3,400 | Priced on the countdown model: the water is finite once the plumber finishes, and the meter log proves the drying days. Pipe repair billed separately by the plumber. |
| Clean water extraction and drying, per square foot | $3 to $4 per sq ft | The guide anchor for uncontaminated losses. Area wet, materials involved, and hours before extraction move the total inside the anchor. |
| Seepage scope: joint and crack entry over wet clay | $1,600 to $4,400 | Priced on the reservoir model: readings at the floor joint continue while the bentonite outside stays saturated, however dry the room feels. |
| Contaminated scope: storm, ground, or sewage water | $7 or more per sq ft | Protective protocol throughout, contaminated porous material removed rather than treated, disposal through regulated routes. |
| Growth treatment where drying started late | Priced after assessment | Scoped from the affected area and the materials involved, in writing, after the moisture map exists. |
Every figure here is a published guide range, offered so a written estimate can be judged against something. The estimate itself belongs to your house alone: it should open with the mechanism it is pricing and close with the drying days its readings predict.
The deductible arithmetic runs $500 to $2,500 against a $1,500 to $5,000 typical job, so small clean losses sometimes price below the claim threshold and large ones clear it easily. Which side yours falls on matters less than which water it was. The freeze split inside the house is the textbook covered loss, documented by the cold snap's dates. Creek water and a failed sump live or die on the water backup endorsement, a line worth confirming in February, while the melt is still a forecast instead of a basement.
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