The respondents, Mr and Mrs Zibi, owned property at erf 671 Auckland Park 1, zoned as 'Residential 1'. From January 2015, they began using the property as a student commune, renting out bedrooms to students and young professionals, without obtaining authorization from the City of Johannesburg Metropolitan Municipality. The municipality conducted several site inspections from September 2013 onwards and issued a TP19 contravention notice on 4 September 2013. From October 2015, the municipality imposed a penalty tariff of R3,592.05 per month (compared to the previous residential rate of R898.01) based on its Property Rates Policy which included a category for 'illegal use' or 'unauthorised use' of property. The property remained categorized as 'Residential 1' on the municipality's 2013 and 2018 valuation rolls. On 10 October 2018, the High Court (per Meyer J) interdicted the respondents from using the property contrary to its residential zoning. The respondents challenged the penalty tariff, arguing the municipality should have first re-categorized the property on its valuation roll before imposing the higher rate.