What culvert and drainage work actually costs
Every range below ties to a real variable, pipe size, footage, or fill height, not a marketing floor.
Driveway culvert install
| Scope | Typical range |
|---|---|
| Permit handling, staking, and driveway base on a county road (you buy the county-sized RCP) | $450 to $950 |
| Full culvert install on a private road, subdivision street, or state highway frontage | $1,200 to $3,200 |
Moves with pipe diameter (18 to 24 inches for most standard drives), ditch depth, driveway width, and whether our crew has to excavate and set the pipe ourselves or the county does. Full details →
Culvert replacement
| Scope | Typical range |
|---|---|
| Section repair or straight pipe swap, same diameter | $650 to $1,500 |
| Full pull-and-reset with re-grading and a diameter upsize | $1,500 to $2,800 |
Moves with how much of the old pipe has to come out, whether the new pipe is a bigger diameter, and how much re-grading the ditch needs. Full details →
Ditch grading & drainage
| Scope | Typical range |
|---|---|
| Re-slope a silted roadside ditch, 100 to 200 linear feet | $600 to $1,400 |
| Yard swale, French drain tie-in, or full lot regrade | $750 to $2,400 |
Moves with ditch or swale length, silt depth, and whether equipment can reach the low spot without crossing a septic field or existing landscaping. Full details →
Site pads
| Scope | Typical range |
|---|---|
| Driveway base prep, 200 to 400 sq ft | $2,200 to $4,200 |
| Small building pad, shed or RV pad, up to 600 sq ft | $3,200 to $5,600 |
| Larger shop or barn pad, 1,000 to 2,000 sq ft | $5,800 to $9,800 |
Moves with pad footprint, fill height needed above natural grade, and soil conditions on the specific lot. Full details →
What isn't in these numbers
These ranges cover our labor, permit handling, and standard base material. They don't include concrete or asphalt paving, which we sub to a concrete crew and which gets quoted separately by them. They also don't include a TxDOT access permit fee if your driveway fronts a state highway, since that permit comes from TxDOT directly, not from us or the county.
One thing worth saying plainly: we quote a range on the phone based on what you tell us, but the number on your paper is set after we walk the actual ditch or lot. Coastal-plain ground hides a lot until you're standing on it.
How we land on your number
A phone quote and a paper quote are two different things on purpose. Over the phone we can tell you the range for your type of job because we've priced enough county roads, private streets, and drainage ditches in this stretch of Brazoria County to know roughly where a driveway or ditch like yours will land. What we can't do over the phone is measure your actual ditch depth, see how far the equipment has to travel to reach the low spot, or check whether a septic field or established landscaping is in the way. Those specifics move the number inside the range, sometimes toward the low end, sometimes toward the high end.
That's why every job gets a site visit before a written number, not just a verbal estimate. We walk the ditch or the lot, take our own measurements, and write the price down before anyone touches a shovel. If something changes once we're digging, a hidden pipe, a septic line nobody flagged, unusually soft ground, we stop and talk to you about it before continuing, not after the invoice shows up. That's the same standard whether the job is a $650 pipe swap or a $9,000 shop pad.
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We serve Angleton, Danbury, Rosharon, West Columbia, and Sweeny only.