New Drain Installations
Professional Drainage Systems, Installed Correctly First Time — Trusted Since 1986
Planning a new build or extension? Need to connect to the main sewer? Our certified engineers ensure your new drainage is compliant, reliable, and built to last. Get a professional consultation and quote today.
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Accreditations
Compliant Drain Installation Services in London & Hertfordshire
Ensure the success of your construction project with a professionally designed and installed drainage system from Drain 247. We provide a complete drain installation service for new builds, property extensions, and system upgrades across London and Hertfordshire. From initial groundwork and planning to final connection and reinstatement, we guarantee all work complies with Building Regulations and Water Authority standards.
Your Local Installation Experts in London & Hertfordshire
From our base in Watford, we serve the entire region, including: All London Boroughs and Hertfordshire (Watford, St Albans, Hemel Hempstead, Stevenage, and surrounding areas).
When Do You Need a New Drain Installation?
Our services are essential for a wide range of domestic and commercial projects, ensuring wastewater and surface water are managed safely and effectively.
Property Extensions: Installing the correct foul and surface water drainage is a critical part of any home extension project.
New Build Properties: We lay complete, brand-new drainage systems for residential homes and commercial developments.
Connecting to a Public Sewer: Moving from a septic tank or cesspit? We manage the entire process of making a new connection to the main public sewer.
Surface Water Management: Installing new soakaways, gully drains, or ACO drains to prevent garden flooding and surface water pooling.
System Upgrades & Re-routing: Replacing an entire old, failing drainage system or re-routing pipework to accommodate property layout changes.
Regulatory Compliance & Guarantee
Drainage installation is a complex process that must adhere to strict legal and technical standards to be signed off by local authorities and utility companies. Our service is built around complete compliance, giving you total peace of mind.
Full Compliance with Building Regulations (Part H)
The UK Building Regulations Part H (Drainage and Waste Disposal) sets out the essential requirements for all drainage systems, covering everything from the gradient and depth of pipes to the safe separation of foul and surface water. We guarantee that your system will be designed and installed to meet or exceed all sections of Part H, including:
H1 (Foul Water Drainage): Ensuring the correct connection and adequate system to carry wastewater from all appliances.
H3 (Rainwater Drainage): Making proper provision for rainwater, prioritising soakaways and sustainable methods where feasible.
H5 (Separate Systems of Drainage): Guaranteeing that foul and surface water pipes are kept strictly separate, a legal requirement that prevents contamination and system overload.
Water Authority & Sewer Connection
If your project involves connecting to the public sewer system—whether for a new build or transitioning from a septic tank—we handle all regulatory and procedural aspects:
Section 106 Applications: We manage the formal application process with the local Water Authority (e.g., Thames Water, Affinity Water) to secure the necessary ‘Section 106’ consent for making a new connection.
Highway Works: Should the connection require excavation in a public road or footpath, we arrange all necessary permits, traffic management, and certified reinstatement work, ensuring all liability and insurance requirements are met.
5-Star Reviews.
Testimonial
Drain 247 mapping saved our project from delays. Clear plans, fast service!”
— John S, Architect, London
Why Choose Drain 247 for Your Drain Installation?
Fully Certified & Compliant: All work is carried out to meet current Building Regulations (Part H) and local Water Authority standards, ensuring your project gets signed off without issue.
Start-to-Finish Project Management: We are your single point of contact, managing the entire process from the initial design to the final connection and reinstatement.
Experienced Groundworks Team: We have the expertise and machinery to carry out all necessary excavation work safely and efficiently.
Lasting, High-Quality Work: We use the best materials and proven techniques to build drainage systems that are reliable and maintenance-free for decades.
Clear, Itemised Quotes: You receive a detailed, fixed-price quote outlining all aspects of the job. No hidden costs, no surprises.
Contact
We are Here:
42-44 Clarendon Road, Watford, Hertfordshire, WD17 1JJ
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Frequently Asked Questions
Do I need permission to install new drains?
Yes, all new drainage systems and alterations must comply with UK Building Regulations Part H. If you are connecting to a public sewer, you will also need a Section 106 agreement from your local water authority. We can help guide you through this process.
How much does a new drain installation cost?
The cost depends entirely on the scale of the project, including the length of the pipe runs, the depth of excavation, and the type of surface. We provide a detailed, no-obligation quote after a full site survey.
What's the difference between foul and surface water drainage?
Foul water is the waste from toilets, sinks, showers, and kitchens. Surface water is rainwater from roofs and patios. It is a legal requirement for these two systems to be kept separate.
Can you connect my property to the main sewer?
Yes. We are fully equipped and qualified to manage new connections to the public sewer system, including all necessary applications, excavation in public highways (if required), and final inspection.
How long does a typical installation take?
A simple installation for a small home extension may take a few days. A larger project for a new build or a new sewer connection can take a week or more. We will provide a clear project timeline with your quote.