100 Mount Street
17 offices listed at 100 Mount Street, from $1,898/m² net, 2 to 6 people, availability updated 9 October 2026.
The building, floor by floor
A floor-by-floor elevation of the tower showing the tenants we can verify, the spaces we list, and where our concierge can help. Hover or tap a floor for detail, the highlighted floors are the ones you can move into.
100 Mount Street floor by floor
100 Mount Street rises 35 floors at 100 Mount Street, North Sydney NSW, completed 2019, designed by Skidmore, Owings & Merrill, with Architectus as architect of record. We currently list space on 12 floors in the building.
Floors with space listed: Level 33 (Suite 2) · Level 18 · Level 17 · Level 16 · Level 15 · Level 14 · Level 13 · Level 12 · Level 11 · Level 10 · Level 9 · Level 8
Floors marked leased aren't dead ends, our concierge can approach the landlord or tenant directly. Free for tenants.
Available at 100 Mount Street
Live on Sidespace at 100 Mount Street right now, across 3 operators.
Commercial tenancies
Dexus · 12 spacesDexus holds commercial space here, whole floors and fitted suites, leased on standard commercial terms.
Serviced offices
Servcorp · 5 spacesServcorp operates serviced offices here, all-inclusive monthly pricing, move in within days.
Looking for something else in the building, a whole floor, a fitted suite, or space that isn't listed? Our concierge can find it.
Ask our concierge →North Sydney's tallest commercial tower
Thirty-five levels designed by SOM, the tallest commercial tower in North Sydney, finished in 2019 and leased to 96 per cent before it opened.
100 Mount Street was designed by Skidmore, Owings & Merrill with Architectus as architect of record, developed by Dexus with Laing O'Rourke as builder, and reached practical completion in May 2019. At 35 levels it is the tallest commercial tower in North Sydney.
It carries about 42,000 square metres over those 35 levels, with floorplates up to 1,300 square metres, and was designed to target a 5 star NABERS Energy rating and 5 Star Green Star Design & As Built. Dexus signed 12 new customers during construction, among them NBN Co, and the tower was 96 per cent leased at practical completion.
The address sits a short walk from both North Sydney Station and the Victoria Cross Metro entrance on Miller Street, which is what a North Sydney tenant is actually buying: this is a market that arrives by train, and parking is scarce enough that walking minutes matter more than car spaces.
Key facts
| Grade | Premium |
| Status | New |
| Completed | 2019 |
| Architect | Skidmore, Owings & Merrill, with Architectus as architect of record |
| Owner | Dexus and Dexus Wholesale Property Fund, co-owners at completion |
| Floors | 35 |
| Typical floorplate | up to m² |
| Precinct | North Sydney CBD |
Built for a market that arrives by train
Who's in the building
The tenants we can verify from public sources, plus any serviced offices you can move into today.
- NBN Co
Transport & location
Victoria Cross Metro is a 2 minute walk from 100 Mount Street.
Explore the wider market: Offices for lease in Sydney →
Take space at 100 Mount Street
Tell us what you need, floor, suite or serviced, and we'll have options and pricing back to you within two business hours.
Nothing listed that fits?
We can still get you into this building. Our concierge approaches landlords and tenants directly, off-market floors, sublease space, upcoming expiries. Free for tenants, always.
Talk to our concierge