Yard Drainage Problems That Send Water Into Richardson Homes
If rain pools against your foundation or shows up in the garage or along an outside wall, the cause is usually yard drainage: the ground slopes the wrong way or the downspouts empty at the slab. Fix the slope later. If water is already inside, get it dried within 24 to 48 hours.
Why it happens
Why water ends up inside Richardson homes after a storm
Richardson sits on heavy North Texas clay. Water soaks into it at roughly a tenth of an inch an hour, so a hard rain runs across the surface instead of sinking in. Whatever direction the yard slopes, that is where the water goes.
The building code asks for the ground to drop at least 6 inches within the first 10 feet of a house, and for patios and driveways near it to slope 2% away. Many Richardson homes were built on slabs in the 1950s to 1970s, and decades of settling, raised flower beds, new patios and fences often reverse that slope. The water then sits against the slab and finds its way in at door thresholds, garage slabs and the bottom of exterior walls.
The City’s storm system is large: more than 10,000 inlets, over 350 miles of storm drain line and nearly 45 miles of creek beds. But it only helps once water reaches the street. Getting it off your lot is up to the property owner.
Warning signs
Signs your yard drainage is letting water in
- Puddles against the foundation that are still there a day after the rain stops
- Wet carpet or swollen baseboards along an outside wall, only after storms
- Water in the garage or under the door between the garage and the house
- Gutters overflowing or downspouts emptying right at the slab
- A musty smell or white mineral crust low on brick or drywall
- Gaps between the soil and the slab in a drought, then soggy ground after rain
If the water only shows up after rain and never when it is dry, the problem is almost always drainage, not plumbing. Water that appears on dry days points to a leak instead; see slab leak signs.
Fixes
Common drainage fixes and who handles them
| Problem | Usual fix | Who does it |
|---|---|---|
| Ground slopes toward the house | Regrade so it drops 6 inches in the first 10 feet | Landscaper or drainage contractor |
| Downspouts empty at the slab | Extensions or buried drain lines that carry water away | Gutter or drainage contractor |
| Low, soggy spot that never dries | French drain or surface drain to a lower outlet | Drainage contractor |
| Swale or yard inlet blocked | Clear leaves, clippings and debris | You or a landscaper |
| Blocked street inlet or creek issue | Report it before changing anything | City of Richardson |
| Water already inside the house | Extraction, drying and moisture readings | Water damage restoration company |
Fix the drainage once the house is dry. Drying comes first because wet materials start growing mold in a day or two, while a regrade can wait for good weather.
When it becomes water damage
Rainwater got inside. What now?
Water that runs in from outside is treated as contaminated under the industry standard (IICRC S500), because it carries soil, fertilizer and whatever else was in the yard. That usually means wet carpet pad and the bottom of soaked drywall come out rather than being dried in place.
- Move rugs, boxes and furniture off the wet area
- Take photos and video before anything is removed
- Keep kids and pets off wet carpet
- Call for extraction and drying the same day
Most homeowner policies don’t cover surface water, so ask the restoration provider for an itemized estimate before work starts. For what happens on the job, see structural drying and what to do right now.
FAQ
Yard drainage FAQs
Does homeowners insurance cover water from poor yard drainage?
Usually not. Standard Texas homeowner policies generally exclude surface water and flooding, which is what rainwater running in from the yard counts as. Flood insurance is a separate policy. Water from a pipe that suddenly breaks is treated differently, so tell your adjuster exactly where the water came from. See our insurance claims guide.
Who fixes drainage problems between neighbors’ yards in Richardson?
Drainage on private lots is generally the owners’ responsibility, so it is usually worked out between neighbors, often with a drainage contractor. The City of Richardson maintains the public storm drain system, and it asks residents to consult the City before changing a floodplain, creek bank or channel, because permits may be required.
Can bad drainage cause slab leaks or foundation movement?
It can contribute. North Texas clay swells when wet and shrinks when dry, so one corner that stays soaked while the rest dries out stresses the slab and the pipes running under it. Signs of a slab leak are covered in our slab leak guide.
How fast does water that came inside need to be dried?
Within 24 to 48 hours. The EPA says drying water-damaged materials in that window usually prevents mold growth. Drainage repairs can wait for a dry week; wet carpet pad and drywall cannot.
Rainwater got inside?
The drainage fix can wait for a dry week. Wet carpet and drywall can’t. Call now.