The perceived economic impact of the City of Johannesburg’s storm water attenuation policy on private property developers

English: Over recent years storm water attenuation policy has become a contentious issue for the property development community, both locally and internationally. Increased urbanisation has forced municipal authorities to reconsider the role of storm water management in an evolving urban landscape. It is within this context that the legislative support and municipal policy for storm water management in the City of Johannesburg (CoJ) has been considered, with direct regard to the perceived economic impact of storm water policy on private property developers. Factors considered included the cost, risk, and time factors of policy compliance within the development process. Research of international policy implementation issues in countries with welldeveloped storm water management frameworks formed the basis for the design of a questionnaire to evaluate the response of local private property developers to the relevant issues. Results of the research indicated that developers had a below average level of knowledge with regard to the storm water management policy of the CoJ, as well as of the underlying supporting legislation. The results of the survey further indicated that developers were strongly opposed to the loss of developable area, but indicated a limited financial impact of the current storm water attenuation policy. The risk element inherent in incorporating attenuation facilities within a development was identified as being low, with little perceived impact, while indications highlighted the inclusion of attenuation facilities as a significant contributing factor in the delay of approval and acceptance of new developments. The additional maintenance costs associated with attenuation facility inclusion were indicated to be of a low level of importance to developers.