Professional Drainage Estimating Services Across the UK
Our drainage estimating services give drainage contractors, groundworks firms, civil engineers, builders and developers a clear, itemised price for every scheme. We prepare detailed estimates for residential, commercial and civil engineering projects, from housing developments to highways packages.
Each estimate breaks down quantities and costs for pipework, manholes, chambers, gullies and soakaways, so you can price accurately and tender with confidence.
What a Drainage Estimate Includes
- Quantity take-offs: pipe runs by diameter and depth, manholes, chambers and fittings, measured from your drawings.
- Material schedules: pipes, bends, junctions, chambers, covers and bedding materials, each listed and priced.
- Labour and plant: excavation, pipe laying, backfill and reinstatement shown separately.
- Cost breakdown: line-by-line costs with a clear summary.
- Assumptions: inclusions, exclusions and ground condition assumptions written down clearly.
Drainage Estimating for Contractors and Groundworkers
Drainage pricing depends on accurate pipe lengths, depths and chamber counts. We measure every run from your drainage layout, so you can price more tenders without hours of take-off work.
- Spend less time measuring and more time winning work.
- Price more tenders without adding to your workload.
- Reduce the risk of missed runs, fittings or connections.
- Present a clear, professional breakdown to your client.
What We Need to Start
- Drainage layouts and long sections, in PDF or CAD format
- Manhole schedules with cover and invert levels, where available
- Site plans and external works drawings
- Site investigation or percolation test results, where available
- The specification and your tender deadline
Drainage Systems We Estimate
- Foul water drainage: waste pipes from buildings to the sewer connection.
- Surface water drainage: rainwater from roofs, roads and hard areas.
- Soakaways: crate and rubble soakaways for surface water.
- Attenuation systems: tanks and crates that store and slowly release stormwater.
- Highway drainage: gullies, channels and carrier drains for roads.
- Sewer connections: connections to existing public sewers.
Drainage Items We Price Line by Line
- Excavation, by depth band
- Pipework by diameter and material
- Pipe bedding, surround and backfill
- Manholes and inspection chambers
- Covers and frames
- Road gullies, linear channels and rainwater connections
- Soakaways and attenuation crates
- Connections to existing sewers
- Reinstatement of surfaces
- Testing and CCTV surveys, where specified
How We Build a Drainage Estimate
- Review the drainage layout, sections and manhole schedule.
- Measure pipe runs by diameter and depth between each chamber.
- Count manholes, chambers, gullies and fittings.
- Price materials, labour and plant line by line.
- Write down the assumptions and exclusions, then issue the estimate.
Drainage Estimating for Different Types of Project
- Housing developments: plot drainage, private and adoptable sewers.
- Commercial sites: car park drainage, interceptors and attenuation.
- Highways: road drainage packages and gully connections.
- Infrastructure: larger civil engineering drainage schemes.
- House extensions: new drainage runs and connections to existing systems.
Drainage Terms Explained
- Foul water: waste water from toilets, sinks and showers.
- Surface water: rainwater that runs off roofs and hard surfaces.
- Invert level: the level of the inside bottom of a pipe.
- Cover level: the level of the top of a manhole cover.
- Attenuation: storing stormwater and releasing it slowly.
- Soakaway: a pit that lets surface water drain into the ground.
- Adoptable sewer: a sewer built to a standard so the water company can take it over.
What You Receive With Your Drainage Estimate
- A scope summary listing the drawings and documents used
- Pipe runs measured by diameter and depth
- Line-by-line pricing, with labour, plant and materials shown separately
- A cost summary with the totals
- A list of assumptions and exclusions
Frequently Asked Questions About Drainage Estimating
What is included in a drainage estimate?
Each estimate covers quantity take-offs, material schedules, labour calculations and a cost breakdown, based on your drawings, specification and drainage layouts.
What types of drainage projects do you cover?
We cover housing, commercial, highways, infrastructure and external works, including foul and surface water systems.
How long does it take to complete an estimate?
Turnaround is usually one to three working days, depending on the size and complexity of the project.
Do you price excavation by depth?
Yes. Excavation is measured in depth bands, using the invert levels on your drawings.
Do you estimate attenuation and soakaways?
Yes. We price crate systems, tanks and soakaways where they are shown on the drawings.
Do you provide a free sample estimate?
Yes. A free sample estimate is available, so you can see our format before you decide.
Related Estimating Services
- Groundworks estimating services
- Road and sewer estimating services
- Civil engineering estimating services
- Plumbing estimating services
- Tender estimating services
Get a Quote for Your Drainage Estimate
Send us your drainage layouts, sections and specification, along with your tender deadline. If you want to see our format first, ask us for a free sample estimate.
Call us on +44 7576 532125, or email info@nextronestimating.co.uk. You can also use the Get a Quote button below.