Water in the house? Close the valve at the meter, then call.

What should you do first when water is spreading in a Dallas house?

Close the main shut-off, usually in the meter box at the street. Keep everyone out of standing water near outlets, cords and appliances, and switch off power to those rooms only if the panel is dry and easy to reach. Then photograph everything, lift valuables off wet floors and call for extraction.

Locating that valve is the part people wish they had done sooner. The lid in the ground lifts off, a meter key turns the valve underneath it, and on a freezing night that key can be the difference between a damp ceiling and a soaked house. Appliances have their own small valves: the cold inlet on top of a water heater, the angle stop behind a toilet, the pair behind a washing machine, the saddle valve on an ice maker.

• Stop the source: the meter-box valve for a split line, the inlet valve on top of the heater, or the angle stop behind the fixture that is leaking.
• Respect the power: skip any room where water has reached outlets, a power strip or an air handler until the circuit is off.
• Record it: photos and a slow video of every wet room, taken before anything is moved or thrown away.
• Get things up: boxes, rugs, electronics and the bottom drawers of furniture off wet flooring, with blocks or foil under the legs.
• Leave the demolition: wet drywall, pad and cabinet bases are judged with a meter, so nothing needs tearing out before a crew sees it.

Why does water damage in Dallas follow the calendar?

North Texas swings hard between extremes. Rare but severe freezes split pipes in winter, spring brings hail and heavy rain, summer runs air conditioners and attic water heaters for months, and autumn delivers a second storm season before the first freeze. The EPA still advises drying wet materials within 24 to 48 hours.

Read the table as a tendency, not a forecast. One mild winter and one February like 2021 sit in the same decade here, so it is worth watching National Weather Service Fort Worth for freeze, hail and flash flood warnings rather than trusting an average.

Why does a slab house dry differently from an older crawl-space house?

A slab holds water at floor level, so it wicks up into baseboards, drywall and cabinet bases and the concrete itself gives moisture back for days. Older pier-and-beam houses let water sit under the floor instead, wetting joists and subfloor and cupping hardwood from below.

Most of this county is slab-on-grade: the 1950s to 1970s ranch houses across Pleasant Grove, Garland, Mesquite and Lake Highlands, and the later subdivisions in DeSoto, Duncanville and Sunnyvale. Drying one usually means extracting from the flooring, lifting soaked pad, and sometimes a flood cut that takes the lowest two to four feet of drywall off so air reaches the studs and the bottom plate.

Older streets in Oak Cliff, East Dallas and Lakewood are the other story, with vented crawl spaces under wood floors. There the work happens underneath, and pier-and-beam crawl space drying and structural drying explain what each foundation hides. Expansive Blackland Prairie clay works on both: it swells in a wet spring, shrinks in an August drought, and the lines buried under a slab were never built to flex with it.

What does drying out a wet Dallas house cost?

Estimated for 2026: a moisture assessment runs free to $200, extraction $1.00 to $3.50 per square foot, and drying one room $800 to $2,500 across three to five days. First-floor slab flood mitigation often lands between $3,000 and $12,000. You agree the emergency-stage price first; repairs are quoted after drying.

What moves the total is the wet square footage, whether the water is clean, gray or sewage, what the floors and cabinets are made of, how long it sat and how many drying days the readings call for. Every range sits on the price page, and the Dallas cost guide walks through what each line covers and what it leaves out.