Foundation drainage is the work of moving water away from your foundation so the soil underneath stays as stable as possible. In Round Rock, that means grading, gutters, downspout extensions, and surface or French drains. Most drainage projects run $1,500 to $6,500, depending on scope and site conditions.
Quick Facts
| Typical cost | $1,500 – $6,500 (Central Texas) |
| Timeline | 1–3 days for most residential jobs |
| Best for | Homes with pooling water, poor grading, or soil that dries and swells with the seasons |
| Warranty | Coverage depends on the repair type, site conditions, and the terms of the signed agreement |
Drainage is rarely the whole story, but it is almost always part of it. Foundation repair addresses the structural movement that has already happened. Water management is what helps protect the work afterward. If the soil around your slab keeps going through big swings of wet and dry, the movement tends to come back. Good drainage is how you slow that cycle down.
Signs You Need Drainage Work
You do not need to be an engineer to notice these. Most homeowners spot them from the driveway or the back patio.
- Water pools next to the foundation after a normal rain and takes a day or more to drain
- Soil pulls away from the slab in dry months, leaving a visible gap you can slide a hand into
- Mulch, dirt, or gravel washes across the walkway or driveway during storms
- Gutters overflow at the corners, or downspouts dump water right at the base of the house
- The ground slopes _toward_ the house instead of away from it
- Cracks in brick or drywall seem to open in late summer and partly close after a wet spell
- A musty smell or persistent damp spot along one side of the house
Any one of these is worth a look. Several of them together usually means water is a real factor in what is happening under your foundation.
How Drainage & Water Management Works
Every property is different, so the first step is always figuring out where the water is actually going. Here is what the process typically looks like on site.
- We walk the property with you. We look at the slope of the yard, where water collects, how the gutters discharge, and how close planting beds and irrigation sit to the foundation. Based on the site conditions, we can usually tell you what is moving water toward the house.
- We check the grading. The ground should fall away from the foundation for the first several feet. Where it does not, water sits against the slab. Re-grading is often the single most effective and least expensive fix.
- We handle the roof water. Gutters and downspouts concentrate a lot of water in a few spots. Extending downspouts, adding splash blocks, or tying them into a buried line moves that water well past the foundation.
- We add drains where the yard needs them. For low areas that stay wet, a French drain (a gravel-and-pipe trench) or a surface drain with a catch basin collects water and carries it to a lower point or to the street.
- We confirm the discharge. All of that water has to go somewhere sensible. We make sure the outlet daylights away from the house and does not push the problem onto a neighbor.
You will see us digging trenches, setting pipe on a consistent slope, and backfilling. It is not glamorous work, but done right it is one of the best things you can do for long-term performance.
Drainage Cost
Below are typical Central Texas ranges. Your number depends on how much water you are moving, how far it has to travel, and how easy the yard is to work in.
| Scope of work | Typical range |
|---|---|
| Downspout extensions & splash blocks | $150 – $600 |
| Regrading / soil correction along one side | $800 – $2,500 |
| Surface drain with catch basin | $1,200 – $3,500 |
| French drain (per run, materials + labor) | $1,500 – $5,000 |
| Full-property drainage plan (multiple systems) | $4,000 – $9,000+ |
What moves the price:
- Linear footage. More trench and more pipe cost more. A single problem corner is far cheaper than wrapping the whole house.
- Depth and slope. Drains need a consistent fall to work. Flat lots sometimes require more digging or a longer run to reach a good outlet.
- Access. Tight side yards, fences, mature landscaping, and sprinkler systems all slow the work down and add labor.
- Soil. Our Taylor Black Clay is heavy and slow to dig, and it holds water rather than letting it soak through — part of why drainage matters here in the first place.
- Surface restoration. Replacing sod, flower beds, or decorative gravel over the finished trench adds to the total.
We give free estimates, and we would rather walk your specific site than quote you a guess over the phone.
Drainage vs. Foundation Piering
These are not competing choices — they solve different problems, and honest work often uses both.
Piering physically stabilizes areas that have already settled by transferring the load to deeper, more stable soil. If your foundation has moved enough to crack walls or stick doors, drainage alone will not lift it back. You need piers for that.
Drainage, on the other hand, addresses the _cause_ of a lot of movement: water in the soil. If your slab is showing early, minor seasonal cracking and the real issue is a downspout dumping against the corner or a yard that slopes the wrong way, correcting the water may be all you need — and it is a fraction of the cost of piering.
The honest answer usually comes down to what the elevations show. If the structure has settled, we address that first, then use drainage to protect the repair. If it has not, drainage may be the smarter, less invasive place to start. We will tell you which situation you are in.
Local Proof
We are based in Round Rock and work throughout Williamson County and the surrounding Austin-area communities — Cedar Park, Georgetown, Leander, Pflugerville, Hutto, and Taylor. The Blackland Prairie clay under this whole region behaves the same way: it swells when wet and shrinks when dry, and that seasonal movement is exactly what good drainage helps calm down. References are available on request.
Financing Options
Drainage work can be part of a larger repair budget, and we do not want cost to be the reason a problem gets worse. Financing is available, subject to credit approval. We also accept all major credit cards. See our financing page for details, and ask about discounts for military, first responders, firefighters, law enforcement, nurses, retired teachers, and seniors.
Frequently Asked Questions
Will fixing my drainage stop my foundation from moving?
It helps reduce the risk of continued movement by calming the wet-dry cycle in the soil, but it is not a guaranteed fix on its own. If the foundation has already settled, drainage protects the repair rather than replacing it. We will be straight with you about which one your home needs.
Do I really need gutters in Central Texas?
For many homes, yes. Without gutters, roof water sheets straight down at the foundation in a few concentrated spots. Adding gutters and extending the downspouts away from the house is one of the cheapest, highest-value things you can do for your soil.
What is a French drain and do I need one?
A French drain is a gravel-filled trench with a perforated pipe that collects water from a soggy area and carries it somewhere lower. You need one when you have a spot that stays wet after rain and simple regrading will not solve it. Not every property needs one.
Can drainage problems cause foundation damage on their own?
Poor drainage does not “break” a foundation by itself, but it drives the soil movement that leads to settling and cracking. Water pooling against a slab, or a yard that funnels water toward the house, keeps the soil in a constant state of change — and that movement is what shows up as cracks and sticking doors.
How long does a drainage project take?
Most residential jobs take one to three days, depending on how much trenching is involved and how tight the access is. We will give you a realistic timeline with your estimate.
Should I do drainage before or after foundation repair?
Usually the piering or leveling comes first to stabilize the settled areas, then drainage protects that work going forward. On homes with only minor seasonal movement, drainage sometimes comes first. It depends on what the elevations show, and we will walk you through it.
Do you offer free estimates for drainage work?
Yes. Estimates are free for both homeowners and commercial properties. We would rather see your site in person than guess at the cause of the water.
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Related services: Foundation Piers & Piering · Pier & Beam Repair · House Leveling
Ready to get water moving the right direction? Schedule an inspection or call (512) 746-7223 to have us take a look and talk through your options.