Drain spacing, depth and total length
Closer spacing, deeper runs and a larger drained area require more excavation, pipe, aggregate and time.
Cost guide
Agricultural & Field Drainage Costs in North Yorkshire
There is no dependable flat rate for draining a field. Pipe spacing, depth, ground, access, stone, outfalls and reinstatement can all change the price. This guide gives a published benchmark and explains what turns that benchmark into a realistic quote.
Reviewed September 2026
The Short Answer
AHDB's national guidance, based on 2024 prices, gives typical field-drainage costs of £2,500–£3,500 per hectare with permeable backfill and £1,400–£2,000 per hectare without it.
These are historic industry benchmarks, not 2026 prices or a Wright's Contractors quotation. They are useful for early budgeting, but a current North Yorkshire price needs a site visit and a workable drainage specification.
| Published specification | Per hectare | Approx. per acre |
|---|---|---|
| With permeable backfill | £2,500–£3,500 | about £1,010–£1,420 |
| Without permeable backfill | £1,400–£2,000 | about £570–£810 |
Per-acre figures are approximate conversions using 1 hectare = 2.471 acres. Source: AHDB field-drainage guidance.
What Changes a Field-Drainage Quote?
Two fields of the same size can need very different schemes. These are the main factors we assess before giving a fixed quotation.
Soil and ground conditions
Heavy, wet, stony or unstable ground changes how quickly trenches can be formed and whether additional protection or backfill is needed.
The outfall
A drainage system needs a suitable place to discharge. Locating, clearing or creating an outfall can materially change the scope.
Permeable backfill and geotextile
The amount of clean stone and whether geotextile is needed affect both performance and material cost.
Machinery access and material movement
Gate widths, slopes, soft access routes and the distance between the work and material deliveries all affect the programme.
Repair, improvement or full replacement
A blocked outlet or damaged section can be cheaper to correct than installing a complete new field-drainage system.
Repair Before Replacement
A wet patch does not automatically mean the whole field needs a new drainage system. Older drains may still work away from a damaged pipe, silted ditch, blocked outlet or later development that interrupted the original run.
We start by looking for the cause. Targeted repairs, outlet work, an interceptor drain or a reinforced gateway can be more sensible than replacing every drain across the field.
What Our Quotation Covers
A site walkover covering wet areas, falls, access and existing drainage
An agreed outline of drain runs, materials and the proposed outfall
Excavation, pipe and specified backfill or geotextile
Connections, ditch work or gateway improvements included in the scope
Reinstatement expectations and a clear fixed quotation
Pricing Drainage Across North Yorkshire
Ground and access vary considerably across North Yorkshire. A paddock beside a good ditch, a low field with no obvious outfall and a working yard with constant livestock traffic need different solutions even when their wet area looks similar.
We cover Knaresborough, Harrogate, Ripon, York, Northallerton and the wider county. The useful first step is a site visit: show us where water stands, when the problem is worst and anything known about old drains or outlets.
Outfalls and Environmental Checks Matter
AHDB recommends an environmental assessment before installing or maintaining field drainage. Drains can reduce surface run-off and erosion, but they can also move nutrient-rich water and sediment quickly if the scheme and outfall are poorly planned.
Read AHDB environmental guidanceAgricultural Drainage Cost Questions
Need a Field-Drainage Quote?
Tell us where the land is, what stays wet and anything you know about the existing drains. We will arrange a practical site assessment.