There are two parts to this article.
The first part looks at Bryanston over the last 10 years. The second tries to crystal ball gaze where Bryanston will be in the next 10.
Due to its historical low-density zoning and power supply constraints, the suburb is characterised by low-rise offices and low-density office parks. This is reinforced by the numbers – for example, 707.6K sqm of leasable area is located on 1,883,120 sqm of land specifically used for office.
This translates into an average floor to area ratio (FAR) of 0.38. Remember this number and concept, we will come back to it later… (Out of interest, Sandton’s average floor to area ratio is exactly 1.00 (based on the total area of land specifically used for office is 2,078.2K sqm))
Explaining this in simpler terms – the tallest office building in Bryanston, Knightsbridge, is on four storeys. Meanwhile, in Sandton, the tallest office building is Sandton City’s Office Towers – reaching twenty storeys, and clearly visible on the skyline.
In summary, Bryanston’s density compared to Sandton is low – this provides “room for growth”.
Has Bryanston changed much in the last ten years?
The graphics below give you a Bryanston “before and after” photo:
As can be seen, from the Bryanston 2009 picture, the northern part of the node has been boosted by construction activity, covering (except for building recycles) the full gamut of development permutations, in the last decade:
All in all, approximately 159.3K sqm (comprising 35.2.K retail and 124.1K office) have come onstream since 2009.
The total size of office has thus grown 21.3% in this 10 year period.
Where it gets interesting… According to Guy Balderson, town planner, office development in the heart of Bryanston (in picture above) is currently controlled by a plan which actually allows for offices up to 7 storeys and a FAR of 0.6 (with a maximum coverage of 70%). Further – where infrastructure allows, an FAR of 1.0 can be supported.
However, this is due to increase further in the future.
The City of Johannesburg’s Nodal Review, applicable to the same area (and generally major news for Johannesburg’s town planning world), is due to be adopted soon. This proposed Nodal Review will allow heights up to 10 storeys – with FAR and coverage increases able to be motivated by developers on a case by case basis. Further, the upcoming nodal review allows for high density residential development within the node.
What this means: applying an FAR through rate of 0.6 to the greater node (remember Bryanston’s current FAR is 0.37, and Sandton’s is 1.00) would mean an increase in lettable area of 446.6K sqms – the equivalent of almost 7 Sasol Sandton buildings!
Working on an assumed office density of 15 sqms per person, this would increase the number of office workers from the current estimated 47K to 77K – roughly 30K extra humans.
Worst case – that’s a lot of cars, and a lot of traffic!
So how do nodes get there? We quote Balderson:
“It is our opinion that office development in Bryanston could be stimulated by the provision of public transport and the inclusion of residential units into the nodal core. The latter would create a mixed-use nodal environment commonplace in urban centres.”
Thus, an increase in high rise flats and apartments (as can be seen in Rosebank currently) coupled with improved public transport will activate growth. This will be fuelled by alternative sources of power and can be augmented by Bryanston cannibalising other competing nodes (such as Fourways, Rivonia, Sandton and Randburg).
Three factors act as a hand-brake to this anticipated growth:
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Bryanston currently has developers with their fingers on the trigger of 20,9K sqm (of user-driven) property development in the public domain.
With the combination of variables, it’s going to be incredibly difficult to bet correctly what “Bryanston 10 years from now” will look like. Our very boring prediction – by 2029, assuming the economy does not fall off a cliff, you can expect a 15% increase in GLA, to end up with 811.8K square meters of rentable office space. This equates to 105.8K extra square meters of developed property (say R2.5B – R3.0B of development), and approx 7.1K extra “bodies” in the node.
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