Common questions about our services, coverage area, and process. If you don't see your question, get in touch.
Why does my yard always flood after heavy rain in Melissa TX?
Melissa sits on the Blackland Prairie, and the dominant soil is Houston Black clay, the Texas state soil and one of the classic expansive vertisols. It takes in water at roughly 0.10 inches per hour. A typical Melissa spring storm delivers an inch or more in under an hour, so nearly all of it stays on the surface and runs to the nearest low point. The DFW area averages about 37 inches of rain a year on the NWS 1991-2020 normals, with May the wettest month at about 4.8 inches, so standing water here is the normal outcome rather than the exception. A French drain or a surface drainage system intercepts that water and carries it to a legal outlet before the yard saturates.
How much does French drain installation cost in Melissa TX?
Most residential French drain jobs in Melissa land between $2,500 and $8,000. A single-trench system of 40 to 60 feet along one side of a house runs $2,500 to $4,000. A two-side perimeter system of 80 to 120 feet runs $4,000 to $7,000. A full perimeter system of 150 to 200 feet runs $7,000 to $12,000. Catch basin systems run $2,000 to $5,000 per basin plus the run out to the outlet. Per linear foot, shallow exterior drains run roughly $10 to $35 and deep perimeter drains run $30 to $90. Collin County sits toward the upper end of the national range because lots here are large and the clay is hard to excavate. Every number goes on paper only after an on-site walk.
Do I need a permit to install a French drain in Melissa TX?
For a standard residential French drain on a single lot you are not pulling a TCEQ stormwater permit. That threshold is one acre of soil disturbance under the Construction General Permit, TXR150000, and a yard drainage job is nowhere near it. City rules are what actually apply at this scale: grading, filling and drainage improvements that could affect adjacent property generally need a City of Melissa permit or review first, and work inside a mapped FEMA floodplain carries additional engineering requirements on top of that. Work outside the city limits goes through Collin County. We confirm the exact requirement with the correct jurisdiction for your address before we quote.
Can my neighbor legally drain their water onto my property?
Texas Water Code Section 11.086 provides that no person may divert or impound the natural flow of surface water in a manner that damages another owner's property by overflow, and an owner injured that way has remedies including damages and, in some cases, an injunction requiring the offending improvement to be removed. Natural flow across a lot is one thing. A neighbor who regraded, bermed or piped water so it now discharges onto you in a way it did not before is a different matter. Most of these get resolved between neighbors once the flow path is documented. It cuts the other way too: we will not design a system that solves your problem by making it your neighbor's.
What areas do you serve around Melissa TX?
Melissa is our home market. We also serve Anna, Van Alstyne, McKinney, Weston, Blue Ridge, Westminster and Gunter, covering eastern Collin County and the southern edge of Grayson County. Call us if your city is not listed and we will tell you honestly whether we can make the drive work.
Is my drainage problem related to my foundation?
Often, yes. Houston Black clay changes volume by 25 to 40 percent between its saturated and dried states. When one side of a slab stays wet through spring while the other dries out through a Texas August, the soil beneath the foundation moves at different rates and by different amounts, and that differential movement is the mechanism behind most foundation complaints in Collin County. We are drainage contractors, not structural engineers. If you have visible foundation damage, get a licensed structural engineer involved. But stabilising the moisture around the perimeter is a necessary step regardless, and most foundation repair warranties require it.
How long does French drain installation take?
One to three days for a standard residential job in Melissa. A 50 to 60 foot single-trench run along one foundation wall is typically one full day including the 811 call, excavation, pipe, fabric, gravel and surface restoration. Full perimeter systems, or jobs with several catch basins and underground laterals, run two to three days. Restoration and cleanup are in the quote, not an extra line at the end.
What is Blackland Prairie clay and why does it cause drainage problems?
The Blackland Prairie is a belt of dark, fertile clay soils running north to south through eastern Collin County. The dominant series here, Houston Black, formed from calcareous Cretaceous clays and marls and covers more than 1.5 million acres of Texas. Two properties matter: very low permeability, so water moves through it slowly, and a very high shrink-swell potential, so it expands when wet and contracts when dry. West of US-75 the soils transition toward the shallower, chalk-derived Austin series, which drains noticeably better. That is why drainage advice that works fine in western Collin County can be flatly wrong for a lot in Melissa.
Do French drains actually work in clay soil?
Yes, when they are built for clay. This is the most common doubt homeowners bring us and it comes from a real observation: French drains do fail in North Texas clay, often within three to five years. They fail when they are built the way they are built in sandy or loamy soil. The perforated pipe does not rely on the surrounding soil to drain, it collects water through its perforations and carries it to the outlet on gravity. In clay, the gravel bed and the geotextile do the work the soil will not, acting as an engineered drainage path alongside the impermeable ground. Skip the fabric, use rounded pea gravel instead of clean angular stone, or run the line flat, and it silts up. Do those three things right and 20 to 25 years is a reasonable expectation.
Can I tie my gutter downspouts into the French drain?
You can send them to the same outlet, but they should not share the same perforated pipe. Roof water arrives fast and in volume, and pushing it into a perforated line pressurises the gravel bed and forces water out through the perforations into the soil you are trying to keep dry. The correct detail is solid, non-perforated pipe for the downspout runs, joined into the system downstream of the perforated section or run separately to the same outlet. Getting this wrong is one of the most common reasons an otherwise well-built system underperforms.
Will my HOA approve a French drain?
In most Melissa neighborhoods, yes. Drainage work that stays below grade, does not alter the approved lot grading plan and does not redirect water onto an adjacent lot is normally approved without much difficulty, and several communities here treat routine drainage correction as maintenance rather than an architectural change. Approval gets slower for anything visible above grade, changes to a shared rear swale, or work inside a recorded drainage easement. We provide a scope drawing and outlet detail you can submit with the architectural application.
My house is new. Isn't the builder responsible for the grading?
Possibly, and it is worth checking before you pay anyone. Most Texas production builders carry a one-year workmanship warranty that covers final lot grading and positive drainage away from the foundation. If your home is inside that window and water is standing against the slab, the builder should be your first call. Past that window, or where the cause is settlement in a utility trench rather than the original grade, it becomes a homeowner issue. We will tell you which one we think you are looking at, and we do not charge for that opinion.
When is the best time of year to install a French drain in Melissa?
Late summer through fall, roughly August through November. Blackland clay in its contracted, dry state excavates like soft rock and holds a clean trench wall, which makes the job faster, tidier and much easier on your lawn. It also means the system is in and tested before the March through May storm season. Spring installation works, but wet, swollen clay is heavy, slow and messy to dig. We install year round and the difference shows up mostly in excavation effort.
How do I know the drain is working after you leave?
We flood the line and watch discharge at the outlet before we backfill, and you are welcome to stand there and watch it with us. After the first real storm the test is simple: the previously wet area should be walkable within a few hours and dry within 24. If it is not, call us. A system that underperforms in its first season has a diagnosable cause, usually outlet elevation or a second flow path nobody accounted for, and sorting that out is our problem, not yours.