After completing his degrees and articles, Louis Slabbert was admitted as an attorney in November 2002 whereafter he practiced as such with Wilson, Markel & Basson Attorneys in Somerset West. He started practicing with Heunis & Heunis Attorneys in Cape Town in June 2003, where he started specializing in property law until he was head hunted by Dykes, Van Heerden Inc, a property law firm based in Roodepoort, Gauteng, who wanted a branch to be opened in Cape Town. He opened such branch in Bellville on 1 June 2004 and is a shareholder and director of Dykes van Heerden Cape Inc and a partner in Dykes van Heerden Slabbert Hopkins.