Westpac House, Office skyscraper on King William Street, Adelaide, Australia

RAA Place, long known as Westpac House, is a 31-storey office tower at 91 King William Street in Adelaide, rising 132 metres to its roof, with each level about 4.2 metres high. It was the tallest building in Adelaide from 1988 until 2019, when Frome Central Tower One surpassed it.

Opened in 1988 as the State Bank Building, it was Adelaide's tallest building until 2019, when Frome Central Tower One surpassed it. After the State Bank collapsed in 1991 it became the BankSA Building, was renamed Santos House in February 1997, and was Westpac House from 2007 to 2022. The RAA secured naming rights in December 2022 and the tower became RAA Place in April 2023.

Before and during major holidays, selected windows are lit in formations: a white cross at Easter and Anzac Day, and a fluorescent-green tree at Christmas. The tower also briefly carried BankSA's sturt desert pea logo after the 1991 collapse.

The tower occupies a block at 91 King William Street, set back from Currie Street, with four street frontages and pedestrian thoroughfares running through the site. It is an operating office building, so access is limited to the public thoroughfares and ground-level areas rather than the upper floors.

The building features a digital sign system that changes colors, replacing an older static red logo. This makes the structure a more dynamic part of the city's skyline.