133 Molesworth Street

An icon with first-class seismic engineering

When it was completed in 1982, the William Clayton Building (now 133 Molesworth Street) in Wellington was the world’s first base-isolated office building. An upgrade has enhanced its earthquake resilience, and has some serious green credentials too.

Located on Wellington’s urban motorway is an engineering icon – 133 Molesworth Street. Its recent redevelopment enhanced the building’s earthquake resilience; reducing the impact of earthquakes and helping tenants get back to business as soon as possible after an earthquake.

The redevelopment also needed to deliver additional space, sustainability, and strong energy performance, while respecting the building’s original look.

It has. By adding two additional floors, the building doubled in size to 16,000m2. Sustainability was delivered through recycling the existing structure and original façade panels. Most of the building services were replaced with modern energy efficiency systems and, although the building has doubled in size, energy consumption has been reduced by a third when comparing the existing building performance.

The resilient building structure is base isolated and designed to remain largely undamaged, even during intense shaking. This was put to the test shortly after the completion of the redevelopment by the Kaikoura earthquake. The building successfully handled the full impact of the quake, meaning the tenant was back in the building the day after the quake – and the building was fully operational.

Despite a number of hurdles along the way (including the unexpected discovery of asbestos), the building was completed on time and to budget, thanks to close collaboration with the client, architect, and contractor.

Awards:

  • 2016 Concrete3 Sustainability Awards – Supreme Award Winner
  • NZIA 2017 Wellington Architecture Awards – Commercial Architecture
  • Property Council Awards 2017 - RCP Commercial Office Property Award - Excellence
  • Property Council Awards 2017 - Resene Green Building Property Award - Merit

Images by Jason Mann Photography

Resilient

First of a new benchmark

10,617GJ

Embodied energy saved

Green

Structure, façade & systems

Our team says

Great outcomes can be achieved when a team enjoys working collaboratively together. This is a project that makes me proud to be part of the industry.

Patrick Breen,

Senior Technical Director – Buildings

Our client says

Key to the success of the project was the quality and approach of the team involved and how well they all worked together to bring the project through to a successful conclusion. They were proactive and coordinated from day one.

Mike McCombie,

Director, Balanced Investments

Services We Provided

Our People

What We've Done