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Why Soakaways Are Required for New Extensions and Driveways in Southampton

Soakaway Installation Southampton

Table of Contents

If you’re planning a new extension, conservatory, or driveway in Southampton, there’s more to consider than just the build itself. Local regulations and Sustainable Drainage Systems (SUDS) requirements mean that new impermeable surfaces—like tarmac, concrete, or paving—must not increase the risk of flooding or surface water buildup.

That’s where soakaways come in.

💧 What Is a Soakaway?

A soakaway is a subsurface drainage solution that allows excess rainwater to filter back into the ground rather than overloading local drainage systems. They’re often used to manage water from roofs, patios, and driveways.

📜 The Legal Requirement: Why You Might Need a Soakaway

In Southampton, SUDS compliance is mandatory for many developments involving hard surfaces. Local planning authorities and building control officers may reject your extension or driveway plans if they don’t include appropriate drainage.

You may legally require a soakaway if:

  • You’re adding a driveway larger than 5m²
  • You’re extending your home’s footprint
  • The project creates surfaces that prevent water infiltration

In these cases, drainage installations such as soakaways or permeable paving systems are strongly encouraged—or even legally required—to reduce the risk of blocked drains in Southampton during heavy rainfall.

⚠️ Why It Matters: The Risks of Non-Compliance

Neglecting proper drainage could lead to:

  • Surface water flooding
  • Blocked drains in Southampton homes
  • Fines or delays from local planning authorities
  • Damage to your property or neighbours’ properties

In short: water has to go somewhere. Without a soakaway, it might end up in your kitchen or garden.

🔧 Soakaway Design & Planning

Before installation, our team at Southampton Drains24 will carry out:

  • A CCTV drain survey (if required)
  • A percolation test to assess soil drainage
  • Full design and compliance planning for your soakaway

We also handle soakaway replacements when older systems are clogged or ineffective—often due to silt, root ingress, or collapsed pipework.

✅ Get Professional Help from Southampton Drains24

Whether you’re a builder, homeowner, or developer, Southampton Drains24 provides expert guidance on all drainage regulations and planning requirements. From drain unblocking in Southampton to full soakaway installations, we offer peace of mind, no call-out fees, and fully insured services.

📞 Call us now or schedule a site visit to avoid legal surprises and long-term damage.

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