In 2008, Vermaak moved to Cape Town to join Western Province.

In 2011, Vermaak was included in the Western Province squad for the 2011 Vodacom Cup competition[2] and made his first class debut in that competition, coming on as a substitute in their match against the Welwitschias and promptly scored a try within a minute of coming on.

Vermaak's Currie Cup debut came in 2013, when he was included in the Western Province team to face the Blue Bulls in the opening match of the 2013 Currie Cup Premier Division season.

[4] After further appearances in the 2014 Vodacom Cup, Vermaak was included in the Stormers squad and named on the bench for their 2014 Super Rugby clash with the Bulls in Pretoria.

[5] Vermaak had a short loan spell at the Boland Cavaliers during the 2013 Vodacom Cup competition,[6] making three appearances in total.