As of September 2026, Angi reports a U.S. national average of $4,634 for professional yard drainage installation, with most reported projects between $2,145 and $7,173. Its dataset is based on 2,203 verified projects from Angi Pros. [1] Simpler work can fall below that range, while larger or multi-part drainage projects can exceed it.
That range is a budgeting starting point, not a quote for your yard. The price changes with the type of water problem, the system needed to manage it, the length and depth of excavation, soil and groundwater conditions, access for equipment, the available outlet, and how much lawn or hardscape must be restored afterward. Two estimates can both be reasonable and still be thousands of dollars apart if they do not describe the same scope.
Before comparing prices, make sure the proposed work solves the same problem. A catch basin that collects surface water, a French drain that intercepts subsurface water, a swale that redirects runoff, and regrading that changes surface flow are different types of work. If you are still deciding which approach fits, start with Yard Drainage Solutions: Compare Your Options.
What yard drainage costs in 2026
For a national planning number, the most useful figure is the range for the whole project rather than a single price per foot. Angi’s September 2026 yard-drainage guide places most projects at $2,145 to $7,173. HomeGuide’s February 2026 drainage guide reports $1,200 to $8,000 for a sub-surface yard drainage system and shows wide variation between individual system types. [1][2] Those ranges overlap, but the difference in definitions is a reminder that published cost guides are not estimating the same exact job.
Use these figures to decide whether an estimate is broadly plausible and to prepare questions. Do not use them to decide what system your property needs.
Cost by drainage system
The ranges below are 2026 national planning figures from current consumer cost guides. [1][3] They are not directly comparable line items because one system may require far more pipe, excavation, outlet work, or restoration than another.
| System / approach | 2026 planning range | Primary function | Common cost pressure |
|---|---|---|---|
| French drain | $2,000–$7,000 | Subsurface interception and conveyance | Long/deep trenching, gravel volume, difficult access, outlet work |
| Trench / channel drain | $2,500–$8,000 | Collecting concentrated surface runoff at pavement or hardscape | Concrete cutting, grate/channel type, crossings, discharge piping |
| Dry well | $1,000–$4,000* | On-site infiltration where soil and site conditions allow | Capacity, soil testing, groundwater, excavation, local requirements |
| Catch basin system | $600–$2,000* | Collecting water at a low point | Number of basins, pipe run, trenching, outlet, restoration |
| Swale | $800–$3,000 | Redirecting surface runoff in a graded channel | Earthmoving, length, vegetation, outlet/stabilization |
| Surface drain | $1,200–$5,000 | Collecting surface water in low or flat areas | Number of inlets, pipe length, access, outlet |
| Yard regrading | $500–$5,000 | Changing surface slope and correcting low areas | Area, elevation change, fill, soil, access, sod/landscape restoration |
Angi’s general yard-drainage guide lists dry-well and catch-basin project ranges at these levels; its separate dry-well guide reports $1,334 to $5,139 for professional installation. This illustrates how scope definitions and project type can change published ranges. [1][4]
For more detail on two of the biggest cost categories, use French Drain Cost for the subsurface-drain scope. Yard Grading Cost covers earthwork and restoration costs.
What changes the price of a yard drainage project
| Cost factor | How it changes scope | What to ask |
|---|---|---|
| The actual water problem | A system for surface runoff may require different work than one for saturated soil or subsurface water. | What water source and movement is this design intended to manage? |
| System length and number of collection points | More trenching, pipe, basins, inlets, gravel, and fittings increase material and labor. | How many feet of pipe or channel and how many inlets are included? |
| Excavation depth and soil | Rock, dense roots, wet soil, deep trenching, or unstable excavation can slow production and require more equipment. | What digging conditions are assumed, and what would trigger a change order? |
| Access | A machine-accessible yard is different from a fenced or tight site where material must be moved by hand. | What equipment will be used, and is access included in the quoted price? |
| Elevation and outlet | A gravity outlet may be simpler than a design that needs longer conveyance, infiltration, or pumping. | Where does the water end up, and is that destination part of the quoted scope? |
| Soil infiltration and groundwater | Infiltration systems such as dry wells depend on site conditions and may require testing or a different design. | Has the contractor confirmed the soil and groundwater conditions needed for this approach? |
| Hardscape and landscape restoration | Sod, planting beds, irrigation, pavers, concrete, or driveway surfaces may need removal and repair. | What restoration is included, and what is excluded? |
| Permits, testing, and inspections | Requirements vary by location and system type and may add fees or design steps. | Who verifies local requirements and who pays any permit or testing fees? |
| Existing drainage or hidden obstacles | Old pipe, roots, utilities, rock, or undocumented structures can change excavation and disposal needs. | How are unforeseen conditions handled in the contract? |
| Combined systems | Some yards need collection, conveyance, grading, and an outlet solution working together. | Is this estimate for one component or the complete water path? |
Why per-foot pricing can be misleading
Per-foot pricing can be useful when you are comparing the same type of drain with the same assumptions. It becomes much less useful when one quote includes basins, deeper excavation, hardscape crossings, an outlet, haul-off, and restoration while another quote is mostly trench-and-pipe work.
Angi gives a broad national range of about $10 to $50 per linear foot across many yard-drainage systems, while HomeGuide lists individual categories ranging from about $5 per foot for some swales to much more for channel drains. [1][2] The unit price only makes sense after the scope is defined.
Representative project scenarios
These scenarios are planning examples, not project quotes. They show why the same-size yard can produce very different estimates.
| Property condition | Likely scope category | Main variables | Why the estimate changes |
|---|---|---|---|
| One low spot after heavy rain | Catch basin or surface inlet connected to solid pipe and a suitable outlet | Number of basins, pipe length, trench access, outlet work, lawn restoration | Often simpler than a multi-zone system, but the price rises quickly if the outlet is far away or hardscape must be crossed. |
| Runoff moving across a broad lawn | Regrading, a swale, or both | Earthmoving area, fill/export, existing slope, vegetation/sod, erosion protection | Less pipe does not automatically mean less labor; moving and restoring soil can be the main cost. |
| Soggy strip with subsurface water | French or curtain-drain approach where site conditions support it | Trench length/depth, gravel, fabric, perforated pipe, access, outlet | Longer and deeper excavation plus aggregate handling can move this toward the upper part of published ranges. |
| Water entering from a driveway or patio edge | Channel/trench drain with conveyance pipe | Saw-cutting or paver removal, channel and grate, load requirements, discharge path | Hardscape work can cost more than the drain components themselves. |
| No convenient gravity outlet | Infiltration such as a dry well where soil, groundwater, and rules allow, or a different designed outlet | Testing, storage volume, excavation, groundwater, local approvals | The destination for the water becomes a major design and cost question. |
| Several wet areas with different causes | Combined collection, grading, conveyance, and outlet work | Multiple zones, longer runs, more structures, sequencing, restoration | A complete system may exceed the range for any single component because several functions are being built together. |
Costs that may sit outside the drainage line item
Ask what is included before assuming the drainage number is the whole project. Common scope items that may appear separately include:
- Site preparation, clearing, or access work.
- Removing an old or failed drainage system and hauling material away.
- Soil or infiltration testing for a proposed dry well or other infiltration feature.
- Permit, inspection, engineering, or local review fees when they apply.
- Concrete, paver, driveway, patio, or walkway removal and replacement.
- Sod, seed, mulch, planting-bed, or irrigation restoration after excavation.
- Additional catch basins, cleanouts, pop-up emitters, pumps, or outlet protection that were not included in the base scope.
- Work needed after unexpected rock, roots, utilities, buried debris, or undocumented piping is found.
A lower estimate is only meaningfully lower if it includes the same water path and the same restoration expectations as the other bids.
How to compare drainage estimates
Before comparing totals, ask each contractor to show the proposed route from the water source to the final destination. Then compare the same scope line by line.
- What problem is the system intended to solve: surface runoff, a low spot, subsurface saturation, roof water, or a combination?
- What is being installed, and what function does each part perform: collection, interception, conveyance, grading, infiltration, or discharge?
- How many basins, inlets, cleanouts, emitters, or other structures are included?
- What are the approximate pipe or channel length, diameter or size, and trench depth?
- Where will the water go, and has the contractor confirmed that the proposed outlet is feasible and allowed for this property?
- What assumptions are being made about soil, groundwater, slope, and infiltration?
- What excavation, haul-off, backfill, gravel, topsoil, and compaction are included?
- What lawn, planting, irrigation, paver, concrete, or driveway restoration is included?
- Who handles utility locating, permits, testing, inspections, and any required local approvals?
- What conditions would cause a change order, and how will extra work be priced?
- What maintenance access will remain after installation, and which components need routine cleaning or inspection?
- What workmanship or material warranty is included, and what is specifically excluded?
If the bids propose different systems, do not force them into a price-only comparison. Ask why each contractor chose that approach and what site observation supports it. The hiring guide, Who Installs Yard Drainage?, can help you match the job to the right trade and evaluate the estimate itself.
Before excavation or discharge work begins
Any drainage job that involves digging should account for buried utilities. 811 is the national call-before-you-dig service; property owners and contractors should contact the applicable state 811 center before excavation and wait for the required utility responses and markings.
Local rules can also affect drainage outlets, work in rights-of-way or easements, connections to public systems, and some infiltration practices. EPA notes that certain stormwater infiltration systems, including some dry-well configurations, can meet the federal definition of a Class V well, with state-specific implementation and requirements. That does not mean every residential dry well needs the same permit; it means the estimate should not assume the regulatory path without checking the applicable authority.
A practical next step before you request quotes
Spend one rain event documenting the problem before you focus on price. Note where the water appears, where it seems to come from, whether it is moving or standing, how long it remains, and whether there is an obvious lower area or outlet. Photos taken during and after the rain can make contractor conversations more specific.
Then ask for estimates that describe the complete water path: how the water is collected or intercepted, how it is moved, where it ends up, and what restoration is included. That gives you a much better basis for comparing cost than a single per-foot number.
For a broader planning path, return to Yard Drainage Costs and Project Planning or compare system functions in Yard Drainage Solutions: Compare Your Options.
Sources
- Angi, “How Much Does Yard Drainage Cost? [2026 Data]” (opens in a new tab)
- HomeGuide, “How Much Does a Drainage System Cost? (2026)” (opens in a new tab)
- HomeGuide, “How Much Does It Cost to Level a Yard or Regrade Land? (2026)” (opens in a new tab)
- Angi, “How Much Does a Dry Well Installation Cost? [2026 Data]” (opens in a new tab)
- 811 / Common Ground Alliance, “Before You Dig” (opens in a new tab)
- U.S. Environmental Protection Agency, “Stormwater Drainage Wells” (opens in a new tab)
- U.S. Environmental Protection Agency, “Stormwater Management Practices at EPA Facilities” (opens in a new tab)
Cost figures reflect national consumer guides dated 2026 and should be rechecked before public launch.