4 offices available
135 King Street
From $890 /mo
1-24+ people
This office
Suite 23.22
People
4
Rent
$3,600/mo
Per desk
$900/mo
Size
16 m²
People
3-14
Size
13-60 m²
Level
29
From
$3,150/mo
24/7 Access
Air Con
Breakout Space
Cleaning
Flex Terms
Furnished
Availability
SS-263
Suite 23.22 This page
4 4 people
$3,600/mo
Internal
From 1 Jan 2027
Need space for a larger team?
14+ people
Why this building
Castlereagh Street CBD Address
Premium workspace in Sydney.
Town Hall Station Proximity
Offices for teams of 3 to 14 people with flexible terms.
Teams 3-14 People Capacity
5 offices available, contact Sidespace to arrange an inspection.
The building
Positioned at the heart of Sydney's bustling commercial district, The Great Room delivers premium serviced offices for lease in Sydney that redefine professional workspace. This Castlereagh Street address places teams within steps of Town Hall Station, surrounded by the energy of George Street's retail precinct and the financial pulse of the central business district.
The workspace itself embraces a sophisticated design philosophy, with private offices accommodating teams from intimate three-person setups to expansive fourteen-person operations. Natural light floods through both internal and external aspects, while thoughtfully curated communal areas foster collaboration beyond traditional office boundaries. The onsite café and business lounge create organic networking opportunities throughout the working day.
Castlereagh Street sits at the crossroads of Sydney's most dynamic precincts, with Pitt Street Mall's retail energy meeting the corporate gravitas of the financial quarter. The immediate neighbourhood pulses with over eighty-five dining venues, from quick grab-and-go spots to client entertainment destinations, while fourteen fitness centres cater to health-conscious professionals seeking work-life integration in New South Wales.
This Great Room Sydney location attracts innovative businesses seeking flexible office space Sydney offers, from scaling startups to established enterprises requiring agile workspace solutions without long-term property commitments.
Read more
The workspace itself embraces a sophisticated design philosophy, with private offices accommodating teams from intimate three-person setups to expansive fourteen-person operations. Natural light floods through both internal and external aspects, while thoughtfully curated communal areas foster collaboration beyond traditional office boundaries. The onsite café and business lounge create organic networking opportunities throughout the working day.
Castlereagh Street sits at the crossroads of Sydney's most dynamic precincts, with Pitt Street Mall's retail energy meeting the corporate gravitas of the financial quarter. The immediate neighbourhood pulses with over eighty-five dining venues, from quick grab-and-go spots to client entertainment destinations, while fourteen fitness centres cater to health-conscious professionals seeking work-life integration in New South Wales.
This Great Room Sydney location attracts innovative businesses seeking flexible office space Sydney offers, from scaling startups to established enterprises requiring agile workspace solutions without long-term property commitments.
Key facts
| Product | Serviced offices |
| Operator | Industrious |
| Address | 85 Castlereagh Street, Sydney NSW 2000 |
| Level | 29 |
| Offices available | 5 |
| Team sizes | 3-14 |
| Office sizes | 13-60 m² |
| From | $3,150 /mo all-inclusive |
| Terms | Flexible · all-inclusive |
| Reference | SS-263 · listed on Sidespace 2 Oct 2026 |
Included
6 star NABERS Energy
24/7 Access
Air Con
Breakout Space
Cleaning
Flex Terms
Furnished
Kitchen
Mail Handling
Meeting Rooms
Phone Booths
Printing
Reception Svcs
+ 10 more
Location
Connecting streets
Streets intersecting or near Castlereagh Street
George Street
Pitt Street
Elizabeth Street
Kent Street
York Street
Clarence Street
Sussex Street
Market Street
King Street
Transport & access
Nearest transport options from this property
Town Hall Station
Train station
200m
George Street Light Rail
Tram / Light rail
150m
Wynyard Station
Train station
400m
Martin Place Station
Train station
500m
How 85 Castlereagh Street compares
Serviced desk rates, all-inclusive, per month · as at 5 October 2026
This building
$1,050
median of 5 priced suites
Sydney
$1,008
276 suites
Sydney market
$952
506 suites
Priced suites at 85 Castlereagh Street sit at a median of $1,050 a desk, 4% above the Sydney suburb median of $1,008 and 10% above the wider Sydney market median of $952.
The operator
About Industrious
View all Industrious locations ›
Industrious is a managed workspace operator with office space available at 85 Castlereagh Street, Sydney. Contact Sidespace to learn more about their portfolio.
More offices for lease nearby
4 offices available
More from Industrious
Frequently asked questions
How much is office space at 85 Castlereagh Street, Sydney?
$3,150 to $16,800 a month is the current all-inclusive range at 85 Castlereagh Street, Sydney, across 5 available suites.
What does that work out to per desk at 85 Castlereagh Street, Sydney?
$900 to $1,200 per desk per month, based on the 5 priced suites listed at 85 Castlereagh Street, Sydney and the headcount each is sized for.
What size offices are available at 85 Castlereagh Street, Sydney?
5 private offices are listed at 85 Castlereagh Street, Sydney, suiting 3 to 14 people, measuring 13 to 60 m².
When is office space at 85 Castlereagh Street, Sydney available?
1 of the 5 listed offices is available at 85 Castlereagh Street, Sydney, with the next from 1 December 2026.
What is included in the rent at 85 Castlereagh Street, Sydney?
One monthly price covers 24/7 Access, Air Con, Breakout Space, Cleaning, Flex Terms, Furnished, plus utilities and internet, there is no separate outgoings bill on a serviced office.
How do you get to 85 Castlereagh Street, Sydney?
200m from Town Hall Station, and 150m from George Street Light Rail. It sits between George Street and Pitt Street.
Who operates 85 Castlereagh Street, Sydney?
Industrious operates the 5 serviced offices listed at 85 Castlereagh Street, Sydney.
