| Construction started | May 2012 | First major construction permit issued |
| First occupants | Jan 2014 | First occupancy permit issued |
| Completed | 2014 | 4IX completed: 21 floors |
Each cost is the estimate on that record. Stages of a project often repeat its full value, so these don't add up to what was spent.
| 19 Dec 2025 | Internal Alterations to Offices - Level 11 | $72k |
| 19 Dec 2025 | Internal Alterations to Offices - Level 8 | $86k |
| 30 Sept 2025 | Proposed Internal Office Fitout | $90k |
| 13 Aug 2025 | Level 7 - Tenancy Fitout of Office | $106k |
| 19 Dec 2023 | Suite 7 - Alterations to existing office | $195k |
| 06 Oct 2023 | Suite 18 - Proposed alterations to existing office | $150k |
| 28 Jan 2022 | Level 10 - Internal Office Fitout for Tetris Capital | $233k |
| 03 Sept 2021 | Level 16 - Proposed internal office fitout for Marks Henderson. Amended – To Include Revised Egress Doors to Single Swinging Egress Doors Only. | $388k |
| 16 July 2021 | Level 16 - Proposed internal office fitout for Marks Henderson. Amended – To Include Revised Egress Doors to Single Swinging Egress Doors Only. | $388k |
| 31 July 2020 | Proposed Install a fire rated ceiling within basement disabled refuge | $0 |
| 17 Dec 2018 | Level 8 - Office fit-out | $234k |
| 11 Sept 2018 | Level 11 - Stage 2 – All works | $124k |
| 04 Sept 2018 | Level 11 - Tenancy Fit-out for Orbis - Stage 1 – Internal Non-Structural Strip-Out Works | $124k |
| 29 June 2018 | Level 9 - Office Fit-Out | $120k |
| 22 May 2018 | Level 19 - Fitout | $15k |
| 17 Feb 2018 | Level 19 - Fitout | $208k |
| 28 June 2016 | Level 18 - Alexander Robertson/3D Oil Tenancy alteraitons | $124k |
| 23 June 2016 | Level 7 - Tenancy Fitout of Existing Office | $141k |
| 02 Feb 2016 | Level 10, Internal office alterations | $130k |
| 11 Sept 2015 | Fit-Out | $40k |
| 28 Aug 2015 | Office Fit-Out | $150k |
| 03 June 2015 | Minor alterations to an existing office space | $25k |
| 13 May 2015 | Level 12 | $796k |
| 16 Feb 2015 | Level 20 Alterations to existing Office | $278k |
| 24 Oct 2014 | Level 21, Office fit out | $302k |
| 23 Sept 2014 | level 15 Office tenancy fit out | $660k |
| 22 July 2014 | Level 10 Fit Out Office Fit Out (5) - Internal Fit Out of Existing Office Tenancy | $250k |
| 14 July 2014 | Level 19 office fit out | $50k |
| 28 May 2014 | Level 6 - Office partitions | $292k |
| 19 May 2014 | Level 14 Internal office fitout | $50k |
| 09 May 2014 | Axil Coffee Tenancy Fitout | $20k |
| 11 Apr 2014 | Tenancy 00.03 "Blue Bag" Retail tenancy fitout Ground Floor | $130k |
| 24 Mar 2014 | LVL 8 Interior Fitout | $125k |
| 18 Mar 2014 | Tenancy 04 Fitout Retail | $40k |
| 29 Jan 2014 | Lvl 9, Interior Fitout | $125k |
| 28 Jan 2014 | Stage 1: Retention & Bulk Excavation - New Office Development | $33.5m |
| 13 Dec 2013 | Office 5, Lvl 13 - Internal Non Structural Alterations to Offices | $140k |
| 09 Dec 2013 | Fitout to Office Level 17 | $444k |
| 30 Sept 2013 | Alterations to existing building (Levels 1 - 5) | $1.0m |
| 17 Sept 2012 | Stage 4: Balance of Architectural & Finishes - New Office Development | $33.5m |
| 10 July 2012 | Stage 3 - Balance of structure. New Office Development | $33.9m |
| 11 May 2012 | Stage 2: Footings, basement slab and basement vertical elements - New Office Development | $33.5m |
| 16 Jan 2012 | (Demolition) New Office Development 41-43 exhibition street | $360k |
| 17 Jan 2000 | Alteration to an existing building ground, level 2 & 3 Office/bookshop | $346k |
Is 4IX residential or commercial?
4IX is a commercial building. The City of Melbourne lists its main use as office.
When was 4IX built?
4IX was completed in 2014.
How many floors does 4IX have?
4IX has 21 floors above ground.
What businesses are in 4IX?
The latest council census counted 22 businesses in 4IX, including 3D Energi Limited, Aither Pty Ltd and Allan Gray Australia Pty Ltd.
Is there office or retail space for lease in 4IX?
See the commercial listings on this page, or search this address on realcommercial.com.au and commercialrealestate.com.au.
Who designed and built 4IX?
Australian Institute of Architects developed 4IX, Hassell designed it and Hickory built it. The building team section has the sources.
How tall is 4IX?
About 82 metres, measured from the City of Melbourne's 3D building model. It's number 161 of 1596 buildings in Melbourne by height.
What public transport is near 4IX?
Town Hall Station is the nearest train station, about 5 minutes' walk. The nearest tram stop is 101 Collins St/Collins St #7, about 1 minute's walk.
What is the planning zone for 4IX?
The site is in the Capital City Zone - Schedule 1 (CCZ1).
Does 4IX have an owners corporation?
Plan of subdivision PS634506 has 22 lots and common property, which means it is managed by an owners corporation.
Has any work been done on 4IX recently?
The City of Melbourne has issued 25 building permits for 4IX since 2000. The most recent was in August 2025.
Sources: City of Melbourne building permits (CC BY 4.0); CLUE building information (CC BY 4.0); CLUE business establishments (CC BY 4.0); Development Activity Monitor (CC BY 4.0); Geocoded National Address File (G-NAF) (Open G-NAF EULA (CC BY 4.0 based)). General information from public records, not legal, financial or building advice.
