Nearly one in five office property purchases in South Africa is now geared toward residential or mixed-use conversion, new data shows.
Nowhere is this trend more visible than in Johannesburg, where 38.1% of office transactions involve planned conversions, according to the latest FNB Property Broker Survey.
These projects are not only breathing life into outdated commercial stock—they’re helping correct a long-standing oversupply, noted John Loos, senior property economist for Commercial Property Finance at FNB.
While COVID-19 may have accelerated the shift, South Africa’s office sector faced challenges well before 2020. The rise of remote and hybrid work during lockdowns merely highlighted existing vulnerabilities.
Advances in technology, digitisation of records, and flexible work practices had already begun eroding demand for traditional office setups.
Even as the hype around working from home (WFH) has moderated, the workplace landscape has permanently changed. Many employees never returned full-time, and businesses have become leaner and more digitally enabled – shrinking the footprint needed to operate.
South Africa’s sluggish economic growth since the early 2010s only compounded this structural shift, limiting the growth of formal employment and stifling long-term demand for commercial office space.
From a low of 9.2% in 2014, national office vacancy rates climbed to 18.2% in 2021/22 following hard lockdowns. By 2024, the rate had declined to 15.8% – still elevated, but clearly improving.

Data from Rode shows a similar trajectory: average A+, A, and B-grade vacancies dropped from nearly 18% in early 2022 to 12.8% by Q1 2025.
However, the recovery remains uneven, said Loos. Coastal decentralised markets – particularly Cape Town and Durban – are performing better, with vacancies just above 8%, partly due to growing demand from the call centre sector.
By contrast, Gauteng metros remain under pressure: Johannesburg posted a 14.1% vacancy rate in Q1 2025, while Pretoria came in at 13.4%.
Market sentiment supports these figures. In FNB’s Q2 2025 survey, 57% of property brokers said supply still exceeds demand. While that’s still a majority, it marks a big improvement from the record 98.4% who said the same in Q2 2021.
One of the strongest indicators of market correction is the plunge in new office development. Just 82,942 square metres were completed in 2024 – an 86% drop from 2019, and a full 90% down from the 2013 peak.
This supply-side slowdown is complemented by rising affordability. Inflation-adjusted rentals have dropped 16.5% since 2020, while real capital values per square metre are down 25.9% since their 2016 high, based on MSCI data adjusted for GDP inflation.
This shift has made office properties more appealing to both tenants and value-seeking investors.
The FNB Property Broker Survey began tracking buyer motivations in Q1 2025 and found that:
-43% were buying for their own business use
-36.4% for rental investment
-19.3% for residential or mixed-use conversions
This trend is particularly strong in Johannesburg, where conversions drive 38.1% of transactions. Nelson Mandela Bay follows at 17.1%, with Tshwane at 14.9%. In contrast, Cape Town (4.6%) and eThekwini (1.3%) have seen little conversion activity—likely because their office fundamentals remain healthier.
But these disparities may also point to untapped opportunity. Cape Town’s City Bowl, for instance, continues to face significant residential pressure. Repurposing underused office space there could help ease housing demand.
As FNB property economist John Loos noted that an important mechanism for absorbing excess office space is unlikely to be needed in the future, suggesting that conversions may slow as equilibrium returns.
With demand permanently lowered by shifting work patterns, tepid economic growth, and rapid digitisation, the sector is moving toward a more sustainable footing – driven by reduced development, lower costs, and the strategic repurposing of space.
Conversions, particularly in Gauteng, have emerged as one of the most effective tools in restoring balance. The future of the office market may well depend on how quickly and creatively it continues to adapt to these lasting changes.