It has been hailed as a future cultural icon for Sydney's west. At a price of $100 million, the biggest performing arts centre in western Sydney will be built using pokies profits.

Rooty Hill RSL, the largest licensed club in NSW that generates the lion's share of its annual revenue from its gaming room floor, has started construction on a $100 million state-of-the-art theatre next to its premises in western Sydney.

An artist's impression of the $100 million Western Sydney Performing Arts Centre, which is to be built next to Rooty Hill RSL and will be entirely self-funded by the club.

Called the Western Sydney Performing Arts Centre, the venue will have a 2000-seat proscenium arch theatre, and is being billed by the club as the west's answer to the Opera House.

​Rooty Hill RSL chief executive Richard Errington said the centre, which is expected to open in late 2019, was "100 per cent funded and underwritten by the Rooty Hill RSL Club".