Commercial plumbing services in Auckland for precinct Site 6 Wynyard Quarter

Size & scope of project

This multi-building commercial development brought together four distinct structures over a shared two-level basement carpark. It included the Pakenham Building (8 storeys), Halsey Building East (9 storeys) and Halsey Building West (8 storeys) above the common basement, along with the separate Flowers Building - a two-storey facility designed around conference and meeting spaces. With multiple interfaces and a large combined footprint, the project demanded careful coordination across both the vertical build and the shared below-ground infrastructure.

Services delivered

DLG delivered full hydraulic services across the precinct, with systems designed for performance, reliability, and future flexibility. The scope included basement sump pump installations, rainwater storage tanks and the associated non-potable pipework for WC flushing, and independent hot water systems to each building complete with hot water return. We also installed water and waste services to future tenancy areas - ensuring incoming occupants could be accommodated efficiently as leasing and fitouts progressed.

What made this project complex or high-risk?

The contract commenced as a base build only, with a major tenancy package introduced once the structure was already underway - significantly increasing complexity midstream. This shift required extensive service changes, including additional water supplies to new tenancy areas, stormwater diversions to protect meeting rooms, and expanded non-potable supply requirements. A separate tenancy contractor was also brought in for the fitout works, meaning DLG had to deliver critical services concurrently across two live programmes - base build and tenancy - while maintaining momentum, quality, and safe access for all trades on site.

Solutions & approach

A key quality driver on this project was the use of brazed copper water supply pipework right through to the fittings, requiring a skilled, detail-led workforce. DLG deployed a combination of our own experienced team and trusted contractors, working closely with the main contractor to maintain programme and deliver consistently high workmanship.

Much of the pipework was installed within exposed ceiling spaces, which demanded extra precision in set-out, alignment, and finish. Acoustic pipe insulation was also required to exposed stormwater and waste services, with additional layers specified through the main office areas to meet performance expectations. DLG worked closely with the main contractor’s site team to coordinate sequencing and ensure installation standards were met across every visible and high-sensitivity zone.

Project results

DLG successfully delivered the full hydraulic package across both the base build and tenancy fitout, meeting client and tenant requirements while supporting staged handovers that allowed early occupation as works continued elsewhere. As the scope evolved and the programme tightened, the team remained responsive - coordinating closely with other trades to keep services progressing, maintain safe and workable site conditions, and uphold a consistent standard of quality from start to finish. The result is resilient infrastructure underpinning a modern commercial precinct, supporting the businesses and people who use it every day and contributing to the wider growth and function of the city.