--- title: "Drain Excavation & New Drain Installation | JD Drainage" description: "Collapsed drain? Extension needing new pipework? Fixed-price drain excavation and new drain installation across Dorset, Hampshire, Wiltshire, Surrey & Berkshire." lang: en-GB json-ld: | [ { "@context": "https://schema.org", "@graph": [ { "@type": "Service", "serviceType": "Drain Excavation & New Drain Installation", "provider": { "@type": "LocalBusiness", "name": "JD Drainage Solutions", "telephone": "03303 330401" }, "areaServed": [ "Dorset", "Hampshire", "Wiltshire", "Surrey", "Berkshire" ] }, { "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "How much does drain excavation cost?", "acceptedAnswer": { "@type": "Answer", "text": "Typical domestic repairs range from £1,500 to £5,000. 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[Home](/) 2. [Services](/services) 3. Excavations & New Drains JD Drainage Solutions # Expert Drain Excavation And New Drain Installation Done Right, First Time When relining is not an option, excavation provides the permanent fix. We excavate, repair, or replace damaged drain sections and install new drainage systems — from single pipe repairs to complete new builds. [Get a Free Quote](/contact)[03303 330401](tel:03303330401) 5/5 from 60 reviews All work guaranteed Same-day response 25+ Years of Experience 60×5★ Google Reviews ✓ Fully Insured ✓ NRSWA Accredited 100% Work Guaranteed ## When Is Drain Excavation Necessary? Drain excavation is required when the pipe damage is too severe for trenchless repair methods. Fully collapsed pipes, heavily displaced sections, crushed pipes, and drainage systems that have suffered catastrophic structural failure require physical access to remove the damaged section and install a replacement. New drain installation is needed for property extensions, new builds, conversions, additional bathroom installations, and any construction project that adds new wastewater connections to the existing drainage system. Our excavation work covers everything from targeted spot repairs — replacing a 1-metre section of collapsed pipe — to complete drainage system installations for new builds and major refurbishments. We handle all groundworks including excavation, pipe laying, backfilling, compaction, and surface reinstatement. We work on domestic and commercial properties across all pipe materials: PVC, clay, concrete, ductile iron, and [pitch fibre](/services/pitch-fibre-repairs). All work is carried out to Building Regulations Part H standards and, where applicable, water authority requirements for connections to public sewers. ## The Cost of Delaying Drain Excavation A collapsed drain does not stabilise. The unsupported void around the collapse point continues to erode as ground water and soil wash into the pipe. The collapse zone expands. The surface above begins to subside — first as a shallow depression, then as a visible sinkhole. Subsidence near foundations triggers structural movement. Cracks appear in walls. Doors stick. Floors become uneven. At this point, the cost is no longer a drainage repair — it is a drainage repair plus structural remediation plus insurance excess plus months of disruption. Delaying excavation for drains running under shared boundaries or public highways compounds the problem. The longer the collapse remains, the more it affects neighbouring properties and infrastructure. What could have been a private repair becomes a complex multi-party liability issue. Many property owners attempt to manage severely damaged drains with repeated clearances and temporary repairs. Each clearance removes a little more of the pipe wall. Each temporary fix delays the permanent solution. The total spent on reactive maintenance often exceeds what the excavation would have cost in the first place. ## Our Excavation Process 1 ### Survey & Planning We conduct a [CCTV survey](/services/cctv-drain-surveys) to map the damage extent, locate services, confirm access requirements, and plan the excavation. For highway work, we handle all permit applications and traffic management. 2 ### Excavation We excavate to the required depth using appropriate plant — mini diggers for domestic work, larger machines for commercial or deep excavations. All excavation is carried out safely with proper shoring and support where required. 3 ### Pipe Removal & Replacement The damaged section is removed and replaced with new pipework laid to correct gradient on a prepared bed. Connections to existing pipes are made using appropriate fittings, couplings, and adaptors. 4 ### Backfill & Compaction The trench is backfilled in layers with appropriate material — typically pea gravel surround and selected backfill — each layer mechanically compacted to prevent future settlement. 5 ### Reinstatement & Testing We reinstate the surface to match existing finishes — tarmac, paving, concrete, or turf. A [CCTV survey](/services/cctv-drain-surveys) confirms correct installation, gradient, and joint integrity before we sign off the work. ## Why Choose Us for Excavation Work ### Complete Groundworks Capability We handle every stage — survey, excavation, pipe laying, backfill, and reinstatement — with our own equipment and team. No subcontractors, no delays, no communication gaps. ### Building Regulations Compliance All work meets Part H of the Building Regulations and relevant British Standards. We handle Building Control notifications and water authority approvals where required. ### Accurate Costing Upfront We provide detailed fixed-price quotations based on CCTV survey findings. No hourly rates, no variation claims, no invoice surprises. ### Full Reinstatement We restore surfaces to match existing finishes. Driveways, patios, lawns, and paths are reinstated as part of the project — not left as a patchwork of repairs. ### Guaranteed Workmanship All excavation and installation work carries a written workmanship guarantee. Pipe materials carry manufacturer warranties of 25–60 years depending on specification. ### Minimal Disruption We plan access routes, protect adjacent surfaces, and schedule work to minimise disruption to your daily routine. Most domestic excavations are completed within 2–5 days. ## Excavation & Installation: Materials, Methods & Standards New drainage installations use predominantly PVC-U (unplasticised polyvinyl chloride) pipework in domestic applications. PVC-U offers excellent chemical resistance, a smooth internal bore, lightweight handling, and simple jointing using push-fit ring seal connections. Design life exceeds 60 years in normal conditions. For deeper installations, beneath roads, or where additional structural strength is required, we specify twin-wall structured pipe (such as Ridgidrain or Naylor Denwall) which provides higher ring stiffness while remaining lightweight. These pipes are rated SN4 or SN8 depending on depth and loading requirements. Pipe gradients are critical to drainage performance. We install all new drains to minimum gradients specified in Building Regulations: 1:40 for 100mm pipes (where at least one WC is connected) and 1:80 for larger-diameter systems. Incorrect gradients cause silting, standing water, and recurring blockages — we verify gradient with laser levels during installation. Bedding and surround materials protect pipes from ground loads and settlement. We use Class S bedding (180° granular cradle with selected backfill) as minimum standard for domestic installations, upgrading to Class B or Class F where ground conditions, loading, or depth require additional protection. Connections to existing drainage systems use compatible couplings and adaptors. Connections to public sewers require Section 106 approval from the local water authority. We manage the application process and arrange inspections where required. For new builds and extensions, we install complete drainage systems including foul water drains, surface water drains, combined systems, and connections to [soakaways](/services/soakaways), attenuation tanks, or public sewers. We work from architect's drainage plans or produce our own layouts based on site conditions and Building Regulations requirements. All excavation work on or near highways requires NRSWA (New Roads and Street Works Act) accreditation and permits. Our team holds current NRSWA qualifications and we handle all permit applications, traffic management plans, and reinstatement specifications for highway authority approval. ## Frequently Asked Questions How much does drain excavation cost? How long does excavation work take? Will you need to dig up my driveway? Do I need Building Regulations approval? Can you connect to the public sewer? What guarantee do you offer on excavation work? Do you handle all groundworks? What areas do you cover? ### Related Services - [CCTV Drain Surveys](/services/cctv-drain-surveys) - [Drain Re-Lining](/services/drain-relining) - [Soakaways](/services/soakaways) - [Commercial Drainage](/services/commercial-drainage) ### Service Areas - [Bournemouth](/areas/bournemouth) - [Poole](/areas/poole) - [Christchurch](/areas/christchurch) - [Dorchester](/areas/dorchester) - [Weymouth](/areas/weymouth) - [Wimborne](/areas/wimborne) - [Wareham](/areas/wareham) - [Dorset](/areas/dorset) - [Swanage](/areas/swanage) - [Bridport](/areas/bridport) ## Ready to Solve Your Drainage Problem? No call-out fees. No hidden charges. Speak to our team today and get a free, no-obligation estimate. [Request a Free Estimate](/contact)[03303 330401](tel:03303330401) [JD Drainage ](/) Professional [drainage services](/services) across the South of England. 25 years of experience. No call-out charge. All work guaranteed. Read our [customer reviews](/reviews). [03303 330401](tel:03303330401) [info@jddrainage247.co.uk](mailto:info@jddrainage247.co.uk) 74 Cucklington Gardens, Bournemouth, BH9 3QS #### [Our Services](/services) - [Blocked Drain Clearance](/services/blocked-drains) - [CCTV Drain Surveys](/services/cctv-drain-surveys) - [Drain Re-Lining & No-Dig Repairs](/services/drain-relining) - [Excavations & New Drains](/services/excavations-new-drains) - [Soakaway Installation & Repair](/services/soakaways) - [Pitch Fibre Pipe Repairs](/services/pitch-fibre-repairs) - [Commercial Drainage Services](/services/commercial-drainage) - [24/7 Emergency Drainage](/services/emergency-drainage) - [High Pressure Drain Jetting](/services/high-pressure-jetting) #### [Service Areas](/areas) - [Drainage in Bournemouth](/areas/bournemouth) - [Drainage in Poole](/areas/poole) - [Drainage in Christchurch](/areas/christchurch) - [Drainage in Dorchester](/areas/dorchester) - [Drainage in Weymouth](/areas/weymouth) - [Drainage in Wimborne](/areas/wimborne) - [Drainage in Wareham](/areas/wareham) - [Drainage in Dorset](/areas/dorset) - [Drainage in Swanage](/areas/swanage) - [Drainage in Bridport](/areas/bridport) - [Drainage in Blandford Forum](/areas/blandford-forum) - [Drainage in Gillingham](/areas/gillingham) - [Drainage in Southampton](/areas/southampton) - [Drainage in Portsmouth](/areas/portsmouth) - [View all 45 areas →](/areas) #### Company - [About Us](/about) - [Customer Reviews](/reviews) - [Our Work](/our-work) - [Special Offers](/specials) - [Drain Repair & Home Insurance Guide](/guides/drain-repair-home-insurance) - [First-Time Buyer CCTV Survey Guide](/guides/bournemouth-first-time-buyer-cctv-drain-survey) - [Get a Free Quote](/contact) - [Privacy Policy](/privacy-policy) - [Terms & Conditions](/terms-conditions) - [Cookie Policy](/cookie-policy) © 2026 JD Drainage Solutions Ltd. 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