Westpac acted as a joint lead manager on a AUD 400 million green bond issued by property group Mirvac in August 2024, marking the first green bond to be issued under Mirvac's newly established Sustainable Finance Framework. The proceeds are earmarked to finance and refinance low-carbon buildings across the developer's portfolio, connecting debt capital directly to assets that meet defined environmental performance standards.
The transaction represents a significant development for the Australian dollar green bond market, combining a major corporate property issuer with strong institutional demand for certified environmental assets at a time when the built environment is increasingly central to national and corporate decarbonisation strategies. The real estate sector accounts for a substantial share of Australia's total energy consumption, and green financing instruments such as this bond create a direct link between capital costs and the environmental quality of the underlying properties.
CLIMATE BONDS INITIATIVE CERTIFICATION ADDS CREDIBILITY
The bond received certification from the Climate Bonds Initiative, an international standards body that assesses whether debt instruments meet science-based criteria for environmental eligibility. To achieve certification, Mirvac was required to demonstrate that the assets financed by the bond meet the CBI's technical standards for low-carbon buildings, which are aligned with the temperature goals of the Paris Agreement. Certification provides investors with independent assurance that the green label attached to the bond reflects genuine environmental credentials rather than a marketing claim without underlying substance.
For Mirvac, the issuance under its Sustainable Finance Framework positions the company as an active participant in the growing sustainable capital markets universe and gives it a credible platform to return to the green bond market for future transactions. The framework is expected to govern the group's sustainable financing activity on an ongoing basis, setting out the categories of eligible expenditure and the governance processes that apply to each issuance.
The choice of the Climate Bonds Initiative as the certifying body reflects a recognition by both issuer and investors that robust third-party validation is essential to maintaining the integrity of the green bond label. Investor scrutiny of environmental claims in fixed income markets has intensified considerably in recent years, and frameworks backed by credible certification are better positioned to attract demand from the largest ESG-focused institutional investors.
WESTPAC DEEPENS ITS SUSTAINABLE FINANCE CREDENTIALS
Westpac's role as joint lead manager on the Mirvac green bond reinforces the bank's position as an active participant in Australia's sustainable finance market. The bank has developed an advisory and distribution capability in green, social, and sustainability-linked instruments, serving corporate issuers seeking to align their financing activities with environmental and social objectives and institutional investors who require assets meeting rigorous ESG criteria.
The AUD 400 million size of the transaction demonstrates the scale that Australian dollar green bond issuance has reached. Deals of this magnitude attract participation from a broad range of domestic and offshore institutional investors including superannuation funds, insurance companies, and specialist ESG asset managers, all of whom are allocating an increasing proportion of their fixed income portfolios to instruments with verified environmental credentials.
The successful placement of the Mirvac green bond adds to the expanding record of large-format green bond transactions in the Australian dollar market and contributes to the normalisation of sustainable finance as a mainstream funding channel for corporate borrowers. Westpac and Mirvac did not release details of the final pricing or the specific projects to which proceeds would initially be allocated at the time of issuance.