Drainage Contractor Pricing Guide: How to Price Drainage Work in the UK (2026)

Drainage is one of the few trade sectors where reactive emergency calls, planned maintenance contracts, and complex excavation projects all coexist in the same business. Pricing each type of work correctly is not straightforward — particularly when the same blockage call can involve ten minutes of rodding or two days of excavation depending on what the CCTV camera finds. This guide covers the pricing models that work for UK drainage contractors across every major service type, and how to structure your quoting to protect margin regardless of what the drain reveals.

Reactive vs Planned Drainage Work Pricing Models

Reactive drainage work — emergency call-outs for blocked drains, flooding, or sewage back-up — commands premium pricing because the customer's need is immediate and their price sensitivity is low. Fixed price for reactive jobs is simpler to sell than a day rate, because customers want to know the cost before they agree to let you start. Planned drainage work — scheduled CCTV surveys, maintenance jetting, septic tank emptying, or drain lining — is priced differently because the customer has time to compare quotes and the scope is more predictable. For commercial contracts — housing associations, local authorities, facilities managers — a day rate with a minimum charge is more common because the scope of planned programmes varies week to week. Having a clear written rate card for each model avoids margin erosion when customers push back on price or when jobs take longer than expected.

CCTV Drain Survey Pricing

CCTV drain surveys are one of the most valuable services a drainage contractor can offer, both for margin and as a gateway to larger remedial work. For domestic properties, a standard CCTV survey of the main drain run typically prices at £95 to £175 depending on access difficulty and your local market. The survey includes a written report with footage on a USB or digital download, defect annotations, and a condition rating. For commercial properties, pricing is usually structured per metre of drain surveyed — typically £3 to £6 per metre for accessible drains in good ground conditions, with uplift for deep drains, manholes requiring confined space procedures, or CCTV work in live commercial kitchens or food environments. A well-structured CCTV report opens the door to follow-on jetting, lining, or excavation work — meaning the survey is also a sales document. Pricing it properly rather than as a loss-leader protects the economics of your survey capacity.

High-Pressure Water Jetting Pricing

High-pressure water jetting is the core revenue driver for most drainage businesses. Domestic blockage jetting — a single call-out to clear a household drain blockage — typically prices at £120 to £250 fixed for a standard access job. The key variables are access (rear garden vs front pathway), pipe size, the nature of the blockage (grease accumulation vs root ingress vs collapsed pipe section), and whether a CCTV camera is needed to confirm clearance. For commercial work, day rate jetting for planned maintenance programmes runs at £350 and upwards per day, depending on the size of the jetter unit, tanker provision for waste water, and confined space working requirements. Supermarket chains, pub estates, and facilities management companies all procure jetting contracts — winning one commercial account at a day rate basis provides better revenue predictability than the same volume of reactive domestic calls.

Drain Excavation and Relay Pricing

Excavation and drain relay is the highest-value work in drainage but also the most variable to price. The core rate is per linear metre of drain excavated and relaid — typically £180 to £350 per metre for standard access in domestic front gardens or driveways, rising to £400 to £600 per metre where excavation requires concrete breaking, highway reinstatement, or shoring. Access complexity has an outsized effect on cost: a drain under a paved patio at 1.5 metres depth costs substantially more than an equivalent run in open ground at 600mm. CCTV surveys pre and post excavation — to confirm the defect location before breaking ground, and to document the completed relay to building regulations standard — should always be costed into excavation quotes rather than presented as extras. Customers who understand what a complete scope looks like from the beginning are far less likely to challenge the invoice on completion.

Septic Tank Emptying and Servicing

Septic tank emptying is high-margin work when the logistics are managed well. A standard domestic emptying visit prices at £150 to £300 depending on tank size, access for the tanker vehicle, and disposal distance. The key operational consideration is route planning: tanker vehicles travelling to rural properties need efficient run scheduling to keep the cost per job viable. Most properties with septic tanks require emptying every 12 months under Environment Agency guidelines — which creates a natural recurring contract opportunity. A service reminder programme for septic tank customers, with advance booking at the anniversary of the previous emptying, builds predictable forward revenue that can be route-planned efficiently. Servicing beyond simple emptying — inlet and outlet baffle inspection, soakaway condition assessment, distribution box checking — increases job value and positions you as a specialist rather than a tanker operator.

Insurance Work and CCTV Report Requirements

Insurance-funded drainage work is a significant revenue stream that many drainage contractors underuse. Property insurers handling escape of water or subsidence claims frequently require a CCTV drain survey as part of the claims investigation before authorising remedial works. Establishing relationships with loss adjusters and building a track record of prompt, well-documented CCTV reports positions you as an approved supplier for insurance work. Insurance jobs typically require a higher standard of written reporting — with annotated stills, defect classification to WRc standards, and a clear remediation recommendation — so your report template needs to meet that standard. The upside is that insurers pay invoice promptly once claims are approved, and a single insurer relationship can generate a consistent flow of survey and remediation jobs without marketing spend.

NADC Membership and Accreditation Benefits

The National Association of Drainage Contractors (NADC) is the main trade body for UK drainage businesses. NADC membership provides public credibility, access to training (including CCTV survey interpretation, confined space, and drain lining courses), and the NADC approved contractor logo that supports your tender applications for commercial and public sector work. For drainage businesses pursuing local authority or utility framework contracts, SSAIB accreditation and Safe Contractor or CHAS registration are frequently required alongside trade body membership. The cost of maintaining these accreditations is recoverable in pricing — commercial clients expect and accept higher rates from NADC members and Safe Contractor-approved businesses than from unaccredited operators.

Marketing Drainage Work

Google Ads targeting emergency drain terms — “blocked drain near me,” “emergency drain unblocking,” “drain survey [town]” — typically delivers the best cost per lead for reactive residential drainage work, because search intent at the moment of a blockage is immediate and price-insensitive. Bidding on emergency terms with strong location extensions and a clear call now CTA converts well when your Google Business Profile shows strong reviews and your landing page confirms rapid response. Checkatrade and Rated People are used by homeowners for non-emergency drain surveys and planned work — the lead quality is lower for reactive emergencies but suitable for survey-led work where the customer is researching rather than in distress. For commercial contracts, a direct approach to facilities managers at target accounts — backed by your NADC membership, accreditations, and case study from a similar commercial client — outperforms any directory listing.

Trade2Base for Quoting and Campaign Attribution

Drainage work ranges from a £150 reactive call to a £15,000 excavation and relay project — which means quote accuracy and professional presentation matter differently at each end of the scale. Trade2Base's AI quote drafting speeds up the creation of structured quotes for complex multi-stage jobs, pulling from your saved line items for CCTV surveys, jetting, excavation rates, and report fees. For recurring commercial clients — the housing association that books quarterly jetting, the facilities manager with a rolling inspection programme — scheduled jobs and automated invoicing remove the manual overhead from predictable recurring work. Campaign attribution tracks which marketing channel each enquiry arrived from, so you can see whether your Google Ads spend on emergency drain terms is producing booked jobs at a cost that makes sense compared to your Checkatrade membership or directory listings.