Drainage correction in Grayson County — fix the water and the clay stops moving your foundation.
Drainage engineering that keeps Houston Black clay at a stable moisture level — the cheapest foundation repair is the one you prevent
From $1800 · Positive flow verified with a hose test before we leave.
The problem
Water standing against the slab after every storm, gutters dumping at the corners, a yard that slopes toward the house — on expansive clay, that wet edge swells while the dry side shrinks, and the slab tilts between them.
Piering a foundation without fixing the drainage is treating the symptom. The wet-dry cycle keeps working, and in three or four years the sections between piers start moving again.
We map how water actually moves across your lot, then build the fix — French drains, surface drains, gutter tie-ins to daylight, regrading — and prove positive flow with a hose test before we consider the job done.
What’s included
- Lot drainage assessment with grade readings at the foundation line
- French drain runs with filter-wrapped pipe and washed gravel
- Surface drains and catch basins at ponding points
- Downspout tie-ins piped to daylight away from the slab
- Hose-test verification of positive flow, in front of you
- Written moisture-management plan for the seasons between rains
Our process
- 1Grade and ponding assessment across the full lot
- 2Drainage plan with fixed pricing per run and per basin
- 3Installation — trenches restored, sod replaced, downspouts tied in
- 4Live hose test proving water leaves the foundation line
Transparent pricing
| Downspout tie-in piped to daylight | from $1,800 |
| French drain | $45–$70 per linear foot |
| Surface drain with catch basins | from $2,600 |
Frequently asked questions
Will drainage work alone fix my foundation?
If movement is early and moisture-driven, sometimes yes — we have closed plenty of inspections with a drainage plan and a soaker-hose schedule instead of piers. If elevations show real settlement, you need both, and we will show you the map either way.
Why do foundation companies care about my gutters?
A single downspout dumping 1,000 square feet of roof water at one slab corner is the most common movement trigger we see in Grayson County. Tying it to daylight is often the highest-return fix on the quote.