14 July 2026

NABERS performance up across COF’s portfolio

Australia’s largest listed pure-play office fund, Centuria Office REIT (ASX: COF), has improved its NABERS Sustainable Portfolio Index (SPI) rating to 5.1 stars for energy and 4.2 stars for water during the 2025 calendar year, representing a considerable improvement across a 12-month period from 4.9 stars and 3.9 stars, respectively.

NABERS, an acronym for the National Australian Built Environment Rating System, is a federal government-backed program that measures the environmental performance of Australian buildings and tenancies across energy, water, waste and indoor environment quality. The NABERS SPI rating summarises the performance of a portfolio for a given environmental category.

Between calendar years 2024 and 2025, initiatives implemented across the COF portfolio included:

53% of COF’s portfolio is electrified including 100% of its Queensland assets
0.5kW solar systems installed bringing the total across COF’s portfolio to 1.6MW¹
4-star GRESB rating for 2025, reflecting an improved score of 87 (2024 score: 81 and 3-star)
Published FY25 voluntary Climate-related Disclosures for Centuria Capital Group.

Belinda Cheung, COF Fund Manager, said, “Today’s customer tenants are seeking modern, sustainable office buildings that incorporate meaningful sustainability features to not only reduce utility costs but help them actively contribute to reducing Greenhouse Gas (GHG) emissions. Sustainable environmental practises are the responsibility of every corporate citizen, and COF works together with its tenants to achieve measurable outcomes for the betterment of our future.”

COF has identified specific ESG targets to help it contribute to the lowering of GHG emissions, namely:

Targeting zero scope 2 emissions by 2028²
Targeting the elimination of gas and diesel in operations (scope 1) where practicable by 2035³
Targeting a portfolio-wide Green Star performance v2.0 rating.

Through proactive asset, property and facilities management, the REIT has a program to identify where it can contribute to improving its portfolio’s sustainability credentials. Below is an outline of the high-performance COF has achieved across its assets as at 31 December 2025.

Street	Suburb	State	NABERS Energy rating
8 Central Avenue	Eveleigh	NSW	5.0
203 Pacific Highway	St Leonards	NSW	5.0
9 Help Street	Chatswood	NSW	5.0
77 Market Street	Wollongong	NSW	5.0
201 Pacific Highway	St Leonards	NSW	4.0
818 Bourke Street	Docklands	Vic	4.5
101 Moray Street	South Melbourne	Vic	4.0
2 Kendall Street	Williams Landing	Vic	5.5
584 Swan Street	Richmond	Vic	5.5
825 Ann Street	Fortitude Valley	Qld	5.5
100 Brookes Street	Fortitude Valley	Qld	5.5
154 Melbourne Street	South Brisbane	Qld	5.5
485-517 Kingsford Smith Drive	Hamilton	Qld	5.5
NISHI, 2 Philip Law Street	Canberra	ACT	5.5
60 Marcus Clarke Street	Canberra	ACT	4.5
William Square, 235 William Street	Northbridge	WA	6.0
144 Stirling Street	Perth	WA	5.0
42-46 Colin Street	West Perth	WA	5.5
57 Wyatt Street	Adelaide	SA	5.5

Excluding solar installations by COF tenants
COF will account for zero scope 2 emissions by being powered by the equivalent of 100% renewable electricity through a combination of onsite solar and large scale generation certificate deals which match our consumption. The zero scope 2 target applies to scope 2 emissions for existing assets that fall under the operational control of COF
COF will focus on eliminating gas and diesel where practicable, from equipment owned and operated by COF. Gas and diesel equipment owned and operated by our tenants is excluded from Centuria’s emission reduction target