We dig, bed and backfill shared service trenches for new builds, subdivisions and commercial sites.
One crew can lay the drainage and open the trench for every other service at the same time.


Opening the ground once saves time and money. We excavate shared trenches for drainage, water, power and telecommunications to the depths and separations each service requires.
We work with your electrician, plumber and network providers so each service goes in on time.
Trenches are bedded, backfilled and compacted properly, leaving the site ready for the next stage.
Shared trenches dug to each provider’s requirements.
Service trenching across multi-lot developments.
Trenching for light commercial and industrial sites.
Bedded, backfilled and compacted, ready for the next stage.
Yes. We dig shared trenches for all services and work with the relevant trades and network providers.
Yes. We own and operate our own excavators, so we’re not waiting on hire availability.
Yes. Trenches are bedded, backfilled and compacted to the required standard.
Call 0800 223 332 or email admin@discountdrainage.co.nz with the site details and we’ll arrange a time.
Before a single house went up at Oliver Grove in Halswell, we had already finished the excavation and drainage for all 26 homes.
Several service lines in one trench, each with its own fittings and connections, and every one had to be right before the site could be built on.
A steep residential site with the foundations already underway, where the drainage had to be planned around the slope.
Receive recent project updates from the team who can sort it all with one call.