431 King William Street, Adelaide, SA 5000

Colliers, in conjunction with CBRE, are proud to act as the joint and exclusive agents for the sale of the 100% freehold office interest in 431 King William Street together with a strata interest in the adjoining multi-deck car park at 9 Holland Street, Adelaide. 

Positioned at the southern gateway to the Adelaide CBD, 431 King William Street occupies a prominent corner site on King William Street, Adelaide's principal north-south boulevard, within the rapidly evolving City South precinct. The asset benefits from significant surrounding investment, including the Adelaide Central Market redevelopment, numerous mixed-use developments and major infrastructure projects transforming the southern CBD. 

Extensively refurbished between 2019 and 2022, the building has benefited from approximately $9.3 million of base building capital expenditure, including upgrades to the lobby, end-of-trip facilities, lifts, chillers, cooling towers, bathrooms and building services. 

Currently 91% leased to a diversified tenant profile, the asset provides investors with secure in-place income together with the opportunity to capture future rental growth through leasing of the remaining vacancy and ongoing market rental reversion. 

Key Asset Highlights:
• 11,696sqm* total NLA
• 100% freehold office interest
• Additional 56% ownership interest in adjoining multi-deck car park
• 197 total car parks with a market-leading ratio of approximately 1 bay per 59sqm*
• $9.3 million refurbishment completed between 2019-2022
• 91% leased* to 30 tenants
• WALE of 2.41 years by income*
• 4.5 Star NABERS Energy Rating
• 1,236sqm* Capital City zoned site
• Zero Stamp Duty 

431 King William Street and Part 9 Holland Street, Adelaide, are offered for sale via Expressions of Interest closing Thursday 10 September 2026 at 3pm (ACST). 

For further information, or to arrange an inspection, please contact the exclusive agents Colliers or CBRE.

*Approximate. As at 1 November 2026.

Property listed by Colliers International (SA) Pty Ltd RLA204 in conjunction with CBRE Pty Limited RLA208125