NABERS Sustainable Portfolios Index 2026

8 May 2026

The NABERS Sustainable Portfolios Index (SPI) 2026 has officially launched, reaffirming its position as Australia’s leading benchmark for measuring the sustainability and environmental performance of commercial property portfolios. This year’s Index highlights the continued expansion of participation across the sector, reflecting growing industry commitment to transparency, efficiency, and environmental leadership.

Now in its eighth year, the NABERS SPI ranks office, shopping centre, and hotel portfolios based on their performance in energy efficiency, water efficiency, waste management, and indoor environment quality. The 2026 results demonstrate strong momentum across all sectors, with broader participation and deeper coverage of Australia’s commercial property market.

The key highlights from the 2026 SPI include:

Growing participation with 67 portfolios across 31 companies participating this year.

Expansion of the Hotels Index with Pro-Invest Group joining the Index for the first time. They join CapitaLand and Schwartz Family company in the 2nd edition of the Hotels Index. The Hotels Index now captures 9,600 hotel rooms.

Increase in SPI coverage to 8.2 million sqm of offices and 6.3 million sqm of shopping centres.

A shift towards full participation. This year, 9 companies participated in the Energy, Water, Waste and Indoor Environment Indexes.

More ties for top place positions and back-to-back winners.

Office portfolios lift performance across all metrics

The NABERS SPI 2026 Office Energy Index includes 402 rated assets, covering approximately 8.2 million sqm – around 26% of the national office market.

Charter Hall has the highest portfolio coverage for the Energy Index, with more than 1.5 million square metres of office space assessed.

Office Energy

Three portfolios share the top spot at 5.6 stars: Charter Hall (Office Trust No. 3); Walker Corporation (Parramatta Square) and Quality Green Group.

A strong group follows at 5.5 stars: Cbus Property; Walker Corporation (Collins Square); Charter Hall (Wholesale Property Trust and Long WALE Fund); Lendlease (Barangaroo International Towers); and QIC Real Estate (Office Fund).

“These results point to a sector increasingly committed to continual improvement and reinforcing a core NABERS principle: measurement drives better management,” Ms Magali Wardle, NABERS Acting Director, says.

Indoor Environment

Four portfolios achieved 6.0 stars: Walker Corporation (Parramatta Square and Collins Square); Charter Hall (Wholesale Property Trust); and Brookfield Property Partners.

Office Water

Lendlease (Barangaroo International Towers) leads with 5.4 stars, followed by Charter Hall (Long WALE Fund) with 5.2 stars; and Walker Corporation (Parramatta Square), Castlerock Services Australia Fund and Growthpoint Properties Australia Limited with 4.9 stars.

Office Waste

Cbus Property and Rest Direct Property Holding Trust share first place at 5.1 stars, with Charter Hall (Charter Hall Prime Office Fund) close behind at 5.0 stars.

Renewable Energy Indicator (REI)

Charter Hall’s PGGM Industrial Partnership 2 (CHPIP2) Fund recorded the highest REI in the office sector at 91.94%, followed by Vision Super’s Local Government Property Fund at 89.15%.

A shift towards full participation

One of the clearest signals in the 2026 SPI is the growing number of organisations committing to full participation across all NABERS indexes.

This year, nine companies report across energy, water, indoor environment and waste.

Government portfolios like Property and Development NSW also report widely and consistently. This is particularly commendable given the range of buildings and locations covered.

The SPI dashboard continues to evolve, with updates in 2026 to improve usability. Asset lists show the number of rated, unrated and exempt buildings, giving users a faster, more transparent view of portfolio coverage.

“A high NABERS rating is not only evidence of sustainability. It is a pathway to finance, a signal to investors, a point of engagement with tenants, and increasingly, a requirement for market

participation. The SPI reflects how expectations are shifting and evolving,” Magali Wardle concludes.

To view the full results of the NABER SPI 2026 and explore interactive dashboards, visit: https://www.nabers.gov.au/data-gallery/nabers-sustainable-portfolios-index-2026