Green revamp delivers a shining 5 star NABERSNZ rating

22 Boulcott Street

Sustainability ruled when Wellington development company Cheops Holdings Ltd transformed two old tower blocks into a dynamic green building in the city’s CBD.

Now 22 Boulcott Street has achieved a market leading 5 star NABERSNZ base building proving its green credentials translate into an energy smart performance.

22 Boulcott Street case study [pdf 1.6 MB]


Located close to Wellington’s main retail zone, 22 Boulcott Street once formed part of the large-scale iconic Wellington Newspapers Ltd site. Cheops’ redevelopment has converted tired building stock into a showcase of sustainable reuse with highflying 5 Green Star credentials.

Images courtesy of photographer Andy Spain.

Key benefits

Compendium of green features include:

  • A towering high performance low-emission glazed curtain wall providing natural light and maximising thermal performance and comfort
  • High performance HVAC equipment
  • Increased outside air rate at 150% improvement on NZBC requirements
  • Occupancy and motion sensors control lighting and reduce HVAC set points when spaces are unoccupied
  • Good levels of daylighting and LED lighting
  • Very efficient water usage and condensing boiler leading to low domestic hot water energy consumption
  • Parking spaces designed for fuel efficient transport
  • Provision of end of trip cycling facilities for staff

Big numbers

  • 70 energy monitoring meters
  • 8500m2 floor area
  • Total Energy Use: 566,332 kWh/year
  • Energy Intensity: 66.2 kWh/year/m2