New Build Drainage: What Homeowners Need to Know

Building a new home or doing a major renovation? Don’t overlook the drainage — it’s one of the most important parts of the build, and one of the hardest (and most expensive) to fix if done poorly.

At Enviroflo, we work alongside homeowners, builders, and developers across Christchurch to make sure drainage is done right the first time — meeting all requirements, working with the natural flow of the land, and setting the site up for a clean, functional finish.

Here’s what to keep in mind when it comes to drainage for your new build.

1. Drainage Planning Starts Early

Drainage design should happen right alongside your building plans. Positioning, slope, soak pits, stormwater flow, and connection points all need to be mapped and approved.

Getting us involved early means we can help make smart decisions that avoid costly rework down the line — especially with sections that are sloped, clay-heavy, or prone to pooling.

2. We Handle Everything Underground

Our team takes care of all aspects of drainage installation, including:

• Sewer and stormwater lines.

• New pipe installation.

• Connections to council mains.

• Soak pits and stormwater management.

• On-site wastewater systems (for rural builds).

We also install PVC pipework using modern, durable fittings to ensure it lasts — and passes inspection.

3. We Finish the Job Properly

Unlike some drainage contractors, we don’t just fill the trench and walk away. Our team can complete the driveway concreting, re-lay grass or pavers, and handle the full site finishing — keeping your project tidy and progressing smoothly.

This means fewer subcontractors, fewer delays, and better results.

4. We Know the Christchurch Ground

From buried rubble and old clay pipes to tough ground and flood-prone zones, we’ve worked in every condition the city can throw at us. Our experience means fewer surprises and faster problem-solving if something unexpected comes up during the dig.

Need Drainage for Your New Build?

If you're planning a new home or major renovation, we’re happy to work alongside your builder or project manager to sort the drainage side from start to finish. Get in touch early and we’ll help map it out properly.

Talk to Us About New Build Drainage — or ask your builder to give us a ring.