Availability
SS-4365 offices · 4 to 18 people 5 available now Updated 7 Oct 2026
| Office | Price /mo | Enquire | |
|---|---|---|---|
| 4 Person Office | 4 | $5,000 | |
| 8 Person Office | 8 | $9,200 | |
| 9 Person Office | 9 | $10,575 | |
| 16 Person Office | 16 | $20,000 | |
| 18 Person Office | 18 | $20,700 |
Need space for a larger team?
Availability changes frequently, and The Commons often has more offices than are listed here. The largest office listed takes 18 people, and bigger teams are often placed by combining suites. Pick your team size and we will check what is free right now.
Why this building
The building
Floor-to-ceiling windows flood each private office with natural light, while thoughtfully curated communal areas encourage collaboration and networking among Sydney's most innovative companies. The interior design balances professional sophistication with the relaxed Australian aesthetic, creating an environment where teams from 2 to 15 people can focus, create and grow within fully furnished spaces that adapt to evolving business needs.
Sydney's retail and financial epicentre surrounds this Castlereagh Street location, with George Street's flagship stores, Pitt Street Mall's shopping precinct, and the historic Strand Arcade all within walking distance. The neighbourhood pulses with over 85 dining venues, from Hyde Park Barracks Cafe to premium establishments along Elizabeth Street, while Town Hall Station connects teams to Greater Sydney's transport network and the creative communities of Surry Hills and Newtown.
Technology startups, consulting firms and creative agencies find their natural home in these private offices Sydney NSW professionals seek, where reception services handle daily operations while meeting rooms accommodate everything from client presentations to board meetings. The Commons offices attract ambitious teams who value both professional infrastructure and the collaborative spirit that defines Sydney's modern business landscape.
Key facts
| Product | Serviced offices |
| Operator | The Commons |
| Address | 121 Castlereagh Street, Sydney NSW 2000 |
| Offices available | 5 |
| Team sizes | 4-18 |
| From | $5,000 /mo all-inclusive |
| Monthly range | $9,200-$20,700 |
| Terms | Flexible · all-inclusive |
| Reference | SS-436 · listed on Sidespace, updated 7 Oct 2026 |
Included
Location
Connecting streets
Streets intersecting or near Castlereagh Street
Transport & access
Nearest transport options from this property
How 121 Castlereagh Street compares
Priced suites at 121 Castlereagh Street sit at a median of $1,175 a desk, 17% above the Sydney suburb median of $1,008 and 18% above the wider Sydney market median of $1,000.
The operator
The Commons offers beautifully designed coworking spaces and private offices across Australia, with prime locations in Melbourne, Sydney, Brisbane and Adelaide. Each workspace combines thoughtful design with premium amenities, including high-speed internet, meeting rooms, podcast studios, wellness areas, and vibrant communal zones. The Commons provides flexible memberships for individuals, start-ups, and established teams seeking creative, productive environments to work and grow.
Focused on community and sustainability, The Commons creates spaces where collaboration and innovation thrive. Whether you’re after a private office for lease or a shared coworking space, The Commons delivers an inspiring work experience that blends style, functionality, and genuine connection in Australia’s leading business hubs.