The corner of St Georges Terrace and Sherwood Court where Allendale Square now stands was owned as early as 1829 by the Leake family.

[7] Later, it was home to Warwick House,[8] the Bank of New South Wales, the Commercial Travellers Association and the Daily News Chambers.

[9] The building's anodised aluminium cladding was extensively weather tested to ensure it could resist atmospheric corrosion.

[7] Also attending the opening were descendants of the Leake family which had owned the site from the earliest days of the colony.

[15] In mid-2000 General Property Trust put its half-share in the tower up for sale for $44.25 million, but no offers it received came close and it was forced to take the building off the market.

[22] The project involved a refit of the lobby, replacement of lift cars and improvement to core services like lighting.

[5] Designed by architects Cameron Chisholm Nicol,[4] the building is rotated 45 degrees relative to St Georges Terrace, in order to secure a plot ratio concession from the Perth City Council.

[5] In order to maximise views towards the Swan River whilst reducing heat loads, the building has windows only on the north and south-facing sides of these steps, and the remainder of the tower is clad with aluminium.

[5] When the tower opened, these lifts were among the most advanced in the world, improving travelling times and halving the plant room space they required.

[5] The roof of the building's mechanical penthouse, which is adorned with the ANZ Bank logo, is designed to be able to function as a helipad if necessary.