Saturday, 5 September 2026
Africa’s commercial property market is entering a period in which the environmental performance of buildings is becoming increasingly connected to their financial performance. What was once primarily treated as a sustainability commitment is beginning to influence leasing decisions, operating costs, access to capital and the ability of older properties to compete with newer office developments. The change is not occurring evenly across the continent, but evidence from South Africa and developments in Nairobi, Lagos, Cairo and Casablanca suggest that energy efficiency and building resilience are moving closer to the centre of commercial real estate investment decisions.
The timing is important because Africa still has an enormous amount of urban development ahead of it. Buildings and construction already account for roughly 37% of global emissions, while African cities are expected to accommodate hundreds of millions of additional residents over the coming decades. Much of the property that will serve this population has yet to be developed. Decisions being made today about energy consumption, cooling, water, materials and infrastructure resilience could therefore determine the operating costs and competitiveness of African buildings for decades.
For property investors, however, the immediate argument for greener buildings is becoming increasingly financial. South Africa provides the clearest evidence that higher-performing offices can produce better investment outcomes. Long-term market data covering hundreds of prime and A-grade properties show that certified offices have outperformed comparable conventional buildings over the past decade. During 2025, vacancy among certified properties stood at approximately 10.3%, compared with 13.1% for comparable buildings without certification. Certified properties also produced substantially stronger net operating income per square metre and carried considerably higher average valuations.
Over the ten years to the end of 2025, certified South African offices generated annualised total returns of almost 7%, compared with just over 5% for conventional properties. These figures do not mean that environmental certification alone created the difference. Many certified offices are newer, situated in stronger locations, operated by institutional landlords and equipped to higher overall specifications. Nevertheless, the results indicate that sustainable characteristics are increasingly associated with the segment of the market performing most successfully.
This is particularly visible in Johannesburg, where corporate occupiers increasingly concentrate on better-quality properties in established business districts such as Sandton and Rosebank. The definition of a high-quality office has also changed. Modern interiors and prestigious addresses remain important, but electricity security, water resilience, efficient cooling and increasingly on-site renewable energy have become part of the building proposition.
This introduces an important African dimension to the green-building investment case. In European markets, reducing energy consumption is frequently discussed primarily in terms of emissions and operating costs. In several African cities, it can also be a question of business continuity. A property capable of producing some of its own electricity, storing water and reducing dependence on unreliable infrastructure can offer occupiers protection against disruption as well as lower consumption.
Cape Town is developing along similar lines, although its property economics differ from Johannesburg. Demand for high-quality offices remains strong, but land and development costs can be considerably higher. New construction therefore has to justify a larger capital commitment, increasing the importance of securing strong tenants and protecting long-term property income. Efficient buildings with lower operating requirements and modern infrastructure can become more attractive in that environment, particularly to multinational and larger domestic companies.
The implications for existing office stock could be significant. Older buildings were frequently designed when electricity and water security were less prominent leasing considerations and when corporate environmental requirements were considerably weaker. Properties with inefficient cooling, poor insulation and limited backup infrastructure are increasingly competing against newer buildings offering tenants lower consumption and greater operational reliability. The commercial consequence may not necessarily appear as a simple green rental premium. Instead, the more important effect could be a growing discount applied to inefficient buildings through higher vacancy, weaker tenant demand and increased capital expenditure requirements.
This is why applying a single green rent premium across Africa would be misleading. There is insufficient evidence to support the idea that every certified African office automatically commands rents 5% or 10% above comparable conventional buildings. Rental performance depends heavily on location, specification, age, tenant demand and market supply. Sustainability is increasingly one component of Grade A quality rather than an isolated characteristic capable of determining rent by itself.
Nairobi illustrates this relationship particularly well. Kenya has developed one of Africa’s more established green-building markets outside South Africa, and international certification has become increasingly common among newer high-quality office developments. Multinational companies, international organisations and larger professional occupiers increasingly expect efficient buildings with reliable utilities as part of their accommodation requirements.
Nairobi also remains a competitive office market. Occupancy varies considerably between districts, meaning landlords need to differentiate properties from competing Grade A developments. Environmental performance can contribute to that differentiation, but it cannot compensate for a poor location or excessive supply. A certified building in a weak office district can still struggle to attract tenants, while a well-positioned conventional building can continue to perform strongly.
The more accurate conclusion is that sustainability increasingly strengthens the competitiveness of an already attractive building. It should not be treated as a guarantee of occupancy. This distinction is important because claims that certified Nairobi offices automatically achieve occupancy rates 10 or 15 percentage points above conventional properties cannot be supported reliably by current market evidence.
Lagos presents a different sustainability argument. Nigeria’s commercial property market operates against a background of high energy costs and infrastructure constraints, giving efficient building systems an immediate economic value. Offices that can reduce dependence on externally supplied electricity through solar generation, efficient cooling and improved building management can lower exposure to volatile operating expenses.
For Lagos landlords, the investment case can therefore be less about achieving a theoretical environmental premium and more about controlling the cost of operating the property. Tenants occupying large offices are similarly exposed to electricity and backup-generation expenses, making buildings capable of reducing those requirements potentially more competitive.
International development capital is beginning to reinforce this direction. New projects receiving institutional and development financing increasingly incorporate environmental standards and resilience requirements into their designs. Developments associated with Lagos Free Zone, for example, include plans for certified commercial property alongside broader infrastructure improvements. However, Lagos remains at an earlier stage than Johannesburg when it comes to demonstrating a measurable market-wide relationship between certification and rents or valuations.
Cairo represents another potentially important market. The Egyptian capital’s office stock approached three million square metres during 2026, with new Grade A development increasing competition between landlords. New Cairo and other expanding commercial districts are adding modern office buildings, requiring developers to differentiate projects through specification, amenities, technology and increasingly environmental performance.
Egypt’s green-building market has also expanded significantly. Around 1.8 million square metres of development has obtained EDGE certification, while financial institutions are increasing the availability of capital intended for energy-efficient buildings and related projects. This could gradually influence both new development and refurbishment economics.
The financing issue requires careful interpretation. A certified building does not automatically receive cheaper debt. Lending costs continue to depend on the borrower, currency, project risk and wider financial environment. The emerging advantage is that qualifying projects can access dedicated sources of capital that may not be available to conventional developments. Green loans, sustainability-focused investment programmes and development finance can therefore broaden the financing options available to property owners.
Morocco is developing along a similar path. International financial institutions and domestic lenders have established programmes intended to support energy efficiency and environmentally improved buildings. Casablanca, as the country’s dominant commercial centre, could become an important testing ground for whether this capital produces a larger pipeline of sustainable office development and refurbishment.
This financing could become particularly important for existing properties. Africa’s future green-building market cannot depend exclusively on constructing new certified offices. Large quantities of existing commercial stock will remain in operation for decades, meaning landlords will increasingly have to decide whether refurbishment can extend the competitive life of those assets.
The investment requirements can be substantial. Improving glazing and insulation, replacing cooling systems, installing solar generation, introducing battery storage, reducing water consumption and upgrading building-management systems all require capital. The financial return arrives gradually through lower operating expenditure, stronger tenant retention and potentially improved property values.
Access to longer-term sustainability-linked capital can help make those refurbishment programmes more feasible. This could prove particularly important in markets where conventional financing remains expensive and landlords might otherwise postpone major upgrades.
For investors, the calculation is increasingly becoming one of future income protection. A property may still be well located and structurally sound while gradually losing competitiveness because its operating costs and infrastructure no longer meet occupier expectations. Environmental obsolescence can therefore develop before physical obsolescence.
This creates a potentially significant challenge for owners of ageing office portfolios. Delaying investment may preserve cash in the short term but increase the amount of capital eventually required to reposition the building. In extreme cases, refurbishment costs could become difficult to justify relative to the property’s value, leaving landlords with increasingly stranded secondary assets.
The most sophisticated investors are therefore likely to examine environmental performance as part of normal asset management rather than treating it as a separate sustainability exercise. Energy consumption, water security, cooling efficiency, renewable generation and resilience can increasingly be evaluated alongside rent, vacancy, lease expiry and capital expenditure.
Corporate occupiers are reinforcing this change. International companies attempting to reduce emissions across their operations increasingly need information about the environmental performance of the properties they occupy. As more high-quality certified alternatives become available, leasing inefficient space may become harder for those companies to justify internally.
That creates an advantage for landlords capable of providing credible performance data. Certification can support this process by offering independent verification, but the underlying performance of the property remains more important than the label itself. A building that consumes less electricity, manages water efficiently and maintains operations during infrastructure interruptions provides tangible benefits regardless of the certification displayed at its entrance.
This could gradually create a more pronounced two-tier office market across Africa. At the upper end will be modern and successfully refurbished properties combining strong locations with efficient building systems, dependable infrastructure and credible environmental performance. These buildings will be best positioned to compete for multinational companies, financial institutions and larger domestic occupiers.
The second tier will contain older buildings requiring increasing investment to maintain their position. Some will be successfully refurbished. Others may have to compete primarily through lower rents, while the weakest properties could eventually require conversion or redevelopment.
South Africa is already providing measurable evidence of this divide. Nairobi is demonstrating how sustainability can strengthen a building’s position in a competitive leasing market. Lagos shows how energy resilience can become a direct operating advantage, while Cairo and Casablanca illustrate how green financing can begin influencing the development and refurbishment pipeline.
The markets remain at very different stages, making continent-wide assumptions about rental premiums or occupancy advantages inappropriate. The direction of travel, however, is increasingly visible.
Africa’s green-building transition is becoming less about whether a property can carry an environmental label and more about whether the building can remain financially competitive as tenant requirements, operating costs and financing standards change.
For commercial property investors, that changes the central question. The issue is no longer simply whether a green office can command a higher rent. It is whether an inefficient building will increasingly have to accept lower rents, spend more capital and face greater vacancy simply to compete.
If that trend continues, sustainability will become more than a competitive advantage for Africa’s best buildings. For the continent’s ageing commercial property stock, it could increasingly determine which assets protect their income and which begin to lose value.
Source: © CIJ.World Africa Research & Analysis Team
