"We can only control certain things and cannot anticipate all market shocks. We have to be cautious. There has been increased political uncertainty recently. Investors hear that the government could make policy changes or changes to its executive, which can affect their sentiment," said De Klerk.
"While we continue with our current local projects, there has been a downturn in demand for longer-term leases, especially in the office sector."
Evan Robins, the listed property manager of Old Mutual Investment Group's MacroSolutions boutique, said a sovereign ratings downgrade would affect Growthpoint's ability to fund new developments. "The risk would be that SA gets downgraded and this pushes bond yields up, which will result in lower listed property prices and higher funding costs.
"If a downgrade results in higher costs of capital for banks and higher yields, these will translate into higher borrowing costs for Growthpoint," he said.
Andrew Konig, CEO of SA's second-largest local property fund Redefine Properties, said a concern was that while business confidence had been weakened by political uncertainty, this would be prolonged in the lead-up to the ANC's 54th national elective conference in December.