One Capital Square
12th tallest finished building in Perth

One Capital Square is an office building in Perth, with 32 floors, finished in 2018. It stands 130 m (427 ft) tall, which makes it the 12th tallest finished building in Perth.
- Height
- 130 m · 427 ft
- Rank in Perth
- 12th of 25 listed
- Floors
- 32
- Completed
- 2018
- Use
- Office
- City
- Perth, Australia
Next to it in the ranking
10th · Allendale Square132 m · 433 ft · 1977
11th · AMP Building131 m · 430 ft · 1976
13th · Switch Perth124.8 m · 409 ft · 2022- 14th · Symphony City (Concerto Apartments)117 m · 384 ft · 2017
See all of Perth's tallest buildings
Talk about Perth
Open the Perth city forum for news, photos and questions about the skyline.
Heights, floors and years for finished buildings follow the CTBUH Skyscraper Center database (height to architectural top). Last checked 5 Nov 2026.