Union Castle Building — Offices to Let & For Sale, Cape Town CBD
Union Castle Building is a commercial office building at 55 St Georges Mall Cape Town CBD Western Cape. We have tracked 7 offices and retail listings here since 2010, with asking rentals from R80.00/m² to R190.00/m². 3 units are available to let or buy right now.
- Location
- 55 St Georges Mall Cape Town CBD Western Cape
- Space types
- Offices and Retail
- Asking rental
- R80.00/m² – R190.00/m²
- History
- 7 listings on record, 2010–2026
- Data updated
Building Insight
The Union Castle Building at 55 St Georges Mall in the Cape Town CBD accommodates both office and retail operations. The property includes a ground-floor retail shop measuring 133 square metres, an 11th-floor office unit of 345 square metres available immediately, and a large 7,303-square-metre office space. Across all records on our platform, seven units have been marketed here since 2010, with three currently active.
Practical features noted in the building descriptions include open parking bays priced at R980.00 each and basement parking bays available at R700.00 per bay. The property features security and is described as accessible.
Typical asking rentals sit around R132 per square metre per month, reflecting a movement of about 63% between 2010 and 2024.
Looking for space at Union Castle Building?
7 listings on record since 2010 (most recently marketed 2024). 3 unit(s) are currently marketed below.
Currently available at Union Castle Building
Previously listed at Union Castle Building
Historical marketing records — for reference, not current availability.
| Listed | Type | Space | Size | Asking |
|---|---|---|---|---|
| 2016-06 | To Let | Retail | 76 m² | R190.00/m² |
| 2016-03 | To Let | Offices | 870 m² | R120.00/m² |
| 2013-10 | To Let | Offices | 265 m² | R95.00/m² |
| 2010-08 | To Let | Offices | 3,000 m² | R80.00/m² |
Asking rental trends
Average asking rental (R/m²) by space type, from To Let listings marketed here. Figures are asking rates, not transacted.
R190/m² asking rental, 2016
One year on record — not enough history for a trend yet.
View the numbers
| 2010 | 2013 | 2016 | 2024 |
|---|---|---|---|
| R80 | R95 | R120 | R130 |
| 2016 |
|---|
| R190 |
Location
55 St Georges Mall Cape Town CBD Western Cape · View on map
Browse more: Commercial property in Cape Town CBD Offices in Cape Town CBD
Frequently asked questions
How much does it cost to rent space at Union Castle Building?
Asking rentals at Union Castle Building have ranged from R80 to R190/m² per month across 7 listings on record since 2010. Average asking rates have risen about 63% since 2010. These are asking rates, not transacted figures.
Is there space available at Union Castle Building right now?
Yes — 3 units are currently marketed at Union Castle Building, listed above. Over the site's history 7 listings have been recorded here since 2010.
What size are the units at Union Castle Building?
Units marketed at Union Castle Building have ranged from 76 m² to 7,303 m².
Where is Union Castle Building?
Union Castle Building is a commercial office building at 55 St Georges Mall Cape Town CBD Western Cape.
Other buildings in Cape Town CBD
Absa Centre · 47 On Strand · The Pinnacle · Picbel Parkade · Matador Centre · Atterbury House · Buitengracht Centre · 80 Strand Street · Norton Rose House (ex Southern Life Centre) · Vogue House