French Drain Installation in Tulsa, OK
A French drain is the workhorse fix for soggy yards and water that sits against the house. Here is how Tulsa-area contractors build one in red clay, what published prices look like, and what to ask before you sign.
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What a French drain is, and when it fits
A French drain is a sloped trench lined with filter fabric, partly filled with washed gravel, with a perforated pipe running along the bottom. Water in the soil and on the surface finds the gravel, drops into the pipe and flows downhill to an outlet. The trench is then capped with more gravel or with soil and sod.
In Tulsa that last part, the outlet, is the whole game. Local clay soils take in water slowly, so a French drain here works as a collector that carries water somewhere else, not as a pit that soaks it into the ground.
It fits when water collects in a predictable strip: a fence line, the foot of a slope, or a side yard that stays wet for days.
Tulsa French Drain Pros is a free matching service, not a drainage contractor. You describe the problem once and independent local drainage companies reply with quotes.
How Tulsa contractors install a French drain
Methods vary by company, but a sound job follows roughly these steps.
1. Walk the water
A good contractor asks where water starts, where it sits and how long it stays, and may ask for photos taken after rain.
2. Pick the outlet
The plan starts at the low end: a curb outlet, a swale or a pop-up emitter. No outlet with enough fall means a different design.
3. Locate utilities
The contractor calls OKIE811 and waits for marks. Sprinkler and other private lines need separate care.
4. Trench and set fall
The trench is cut to a steady downhill slope, checked with a level. Depth and width belong on the quote.
5. Fabric, gravel, pipe
Fabric lines the trench, then gravel, perforated pipe and more gravel. Fabric folded over the top helps keep silt out.
6. Cleanout and restore
A cleanout lets the line be flushed later. Then the trench is backfilled and sod or seed goes down.
Why Tulsa yards need them: rain, clay and slab houses
Tulsa averages about 41 inches of rain a year (40.96 inches, NOAA 1991–2020 normals at Tulsa International Airport), and about a dozen days a year bring an inch or more. May is the wettest month at 5.73 inches, and April through June deliver roughly 36% of the year's rain in three months.
That rain lands on soil that can't take it fast. About a fifth of Tulsa County is Dennis silt loam, which USDA rates "somewhat poorly drained," and roughly 47% of the county is mapped as clay with high or very high shrink-swell. Water soaks in slowly, so it ponds in low spots and against foundations.
Most homes here sit on slabs. In the region that includes Oklahoma, about 98% of new homes built in 2024 were slab-on-grade, and basements are rare. Good drainage can help reduce moisture swings in Tulsa's clay soils around a slab, which is why many homeowners call about a French drain after watching water stand at the brick for a day or two.
Age matters too: about 65% of Tulsa's homes predate 1980, so settled grade, big tree roots and dead buried downspout lines are common.
What French drains cost in Tulsa
Length, depth and the distance to an outlet drive most of the price. These are published figures, not quotes from any company.
| Item | Typical range | Source |
|---|---|---|
| French drain, Tulsa | $23–$36 per linear foot (20 ft $460–$710 · 60 ft $1,370–$2,140 · 100 ft $2,290–$3,570) | HomeBlue, May 2024 |
| French drain project, national | $2,800–$6,500 (avg ≈ $5,000) | Fixr, Jan 2025 |
| Exterior French drain | $10–$100 per foot (avg ≈ $25) | Fixr, Jan 2025 |
| By location (per foot) | yard $20–$30 · around the house $50–$80 · driveway $45–$55 · patio $25–$40 | Bob Vila, Jun 2024 |
| Sod after trenching | $1–$2 per sq ft | Bob Vila, Jun 2024 |
Published estimates, not quotes (HomeBlue May 2024; Fixr Jan 2025; Bob Vila Jun 2024). Tulsa companies' quotes vary.
Tree roots, a long run to the curb, cut concrete and lawn restoration all raise the number. The Tulsa French drain cost guide has a calculator for rough planning.
Where the water goes, permits and 811
Tulsa's Residential Site Plan Guidebook says properties must convey drainage "without causing damage to adjoining properties," and water can't be blocked from flowing onto your lot from uphill. A good plan carries water to the street or another approved outlet, never onto a neighbor and never into a sanitary sewer.
Inside Tulsa city limits, the city's Watershed Development Permit rules cover excavating, grading and regrading, and work in the street right-of-way (like running a pipe through the curb) needs a separate right-of-way permit. Ask your contractor whether your project needs a permit, or call City of Tulsa Development Services (311). Suburbs have their own rules.
Oklahoma law requires anyone digging for hire to contact OKIE811 at least 48 hours ahead (excluding weekends and holidays). It's free. Sprinkler lines and other private lines aren't marked, so your contractor should plan for them.
Check your HOA covenants and plat for drainage easements before regrading or trenching.
French drains handle yard and roof runoff. They don't protect a home from creek or river flooding. If you live near a creek, request a Floodplain Determination from the City of Tulsa before you spend money on drainage.
When a French drain is the right fix, and when it isn't
| Good fit | Probably the wrong fix |
|---|---|
| Water seeps across a yard from higher ground | Water comes off the roof at one or two downspouts: fix the downspouts first |
| A low strip stays soggy for days after rain | The whole yard tilts toward the house: regrading or a swale may do more |
| Water stands along a slab or fence line | Water sheets across a driveway or patio: a channel drain catches surface flow better |
| There's a clear downhill outlet | Creek or river flooding: no lot drain handles that |
Pros: mostly hidden once sod regrows, and it handles surface and shallow subsurface water. Cons: it needs an outlet, trenching tears up lawn, and skimped fabric or gravel can clog in silty clay. A failing drain is covered on the repair and cleaning page.
Questions to ask every contractor
- Where exactly will the water exit, and is that outlet on my property or at the street?
- How deep and how wide is the trench, and how much fall will the pipe have?
- What pipe (corrugated or rigid perforated PVC), what fabric and what size gravel?
- Who calls OKIE811, and how will you handle sprinkler lines and other private lines?
- Does this job need a City of Tulsa or suburban permit, and who pulls it?
- Is sod or seed restoration included, and how many square feet?
Oklahoma doesn't issue a state license for general, landscape or drainage contractors. Plumbing, electrical and mechanical work does require a Construction Industries Board license. Ask any contractor for proof of liability insurance, and use a licensed plumber for anything tied into your home's plumbing.
Get two or three written quotes with the same scope so you can compare them line by line. The project process page walks through the order of steps.
Signed at the kitchen table?
If you sign at home, the FTC Cooling-Off Rule generally gives you three business days to cancel, and Oklahoma law gives a similar right for financed home-solicitation sales. A fair quote will still be good after you sleep on it.
French Drain Installation FAQ
How much does a French drain cost in Tulsa?
HomeBlue's May 2024 estimate for Tulsa is $23–$36 per linear foot, or about $1,370–$2,140 for a 60-foot run. Fixr's national figure for a typical project is $2,800–$6,500. These are published estimates, not quotes; clay, depth, roots, the distance to an outlet and lawn repair move the real number.
Will a French drain work in Tulsa clay soil?
Yes, if it's designed as a collector. Clay takes in water slowly, so the drain gathers water in gravel and a perforated pipe and carries it downhill to an outlet. A French drain that ends in a gravel pit with nowhere to go often stays full. Ask each contractor where the water will exit.
Do I need a permit for a French drain in Tulsa?
It depends on the job. Inside city limits, the Watershed Development Permit rules cover excavating, grading and regrading, and running a pipe through the curb is right-of-way work that needs its own permit. Ask your contractor, or call City of Tulsa Development Services at 311. Suburbs set their own rules.
How long does French drain installation take?
Many residential drains are installed in a day or two once utilities are marked, though long runs, concrete cutting or rock can stretch that. Plan for the OKIE811 notice period of at least 48 hours, excluding weekends and holidays, before digging starts. Ask each contractor for an expected timeline in writing.
Can a French drain empty onto my neighbor's yard?
It shouldn't. Tulsa's residential guidebook says drainage must be conveyed without causing damage to adjoining properties, and water from uphill can't be blocked. Most plans aim for the street or another approved conveyance. Redirecting water onto a neighbor can create liability, so get the outlet location in writing.
Get French drain quotes in Tulsa
Tell us where water collects, how long it sits after rain and roughly how long the problem area is. Independent local drainage companies reply with no-obligation quotes.
Standing water after every storm? Get free quotes.
Describe the problem once and independent Tulsa-area drainage companies can reply with no-obligation quotes.