PROPERTY value is no longer determined by location, size and finishes alone. In conformance with IVS 2025, a new variable has entered every valuation model: resource performance.
Water and energy efficiency, carbon intensity, health, and resilience now move rents, yields and resale prices. The market is pricing what valuers call the “green premium” and penalising what it calls the “brown discount”. Ignore it, and property values will bleed.
The shift is not theoretical. The reality is that it is intertwined with the United Nations’ January 2026 declaration of a “global water bankruptcy era”. When water systems lose the ability to return to historical baselines, risk reprices. For real estate, that repricing is happening through net operating income, cost of capital, and obsolescence.
What market is paying for
“Green premium” is the measurable uplift in value for buildings that meet credible green certification and sustainability standards such as EDGE, Green Star, or LEED. The premium shows up across all value drivers:
Higher income: Tenants, especially banks, multinationals and DFIs, now mandate ESG-compliant space. A water- and energy-efficient building in Harare would achieve lower operating costs, fewer supply interruptions, and better indoor air quality.
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Result: 5-15% rental premiums and lower vacancy. In a market with water rationing, a building with rainwater harvesting and greywater reuse is simply more lettable. Health-focused design — daylight, ventilation, non-toxic materials — also reduces sick leave, a factor corporate tenants now model.
Lower risk, lower yield: Lenders apply ESG screens under IFC and Equator Principles. A green-certified asset presents lower regulatory, reputational, climate and obsolescence risk. Lower risk means financiers accept a lower cap rate. A 50-basis-point yield compression on a US$10m office block equals US$500 000+ in capital value. That is the green premium capitalised. Insurance underwriters are also rewarding resilience with lower premiums.
Future-proof resale: Investors are pricing “stranded asset” risk. A building that cannot meet set water efficiency bylaws, carbon disclosure rules, or health standards will trade at a discount or fail to trade at all. Green assets are bankable assets because they come with auditable data.
Capital cost savings: Green design reduces lifecycle capex. Efficient HVAC and LED lighting cut replacement frequency. Durable, local materials reduce maintenance. For developers, the 2-5% upfront cost premium is recovered through faster leasing and higher exit values.
Cost of doing nothing
“Brown discount” is value destruction from non-performing buildings. It is arithmetic, not ideology. Higher operating costs: A “brown” office block in Harare with old fixtures, no metering and inefficient chillers faces 40-60% higher water and electricity bills than a green peer. Those costs hit NOI directly. Every dollar lost to inefficiency is a dollar subtracted from value.
Obsolescence and vacancy: Corporate tenants are exiting non-compliant buildings to meet their own net-zero and water targets. As green supply grows in Borrowdale, Newlands and Sam Levy’s Park, brown stock in the CBD is repricing downwards. Vacancy becomes structural, not cyclical.
Finance and insurance penalties: Banks are applying “brown penalties” — higher interest margins or lower LTVs for assets with poor ESG performance. Insurers are linking premiums to climate and water risk exposure. A building that cannot demonstrate water resilience pays more to insure and borrow.
Health and liability risk: Poor ventilation, mould from leaks, and heat stress create tenant health issues and legal exposure. In a post-Covid market, “healthy building” certification is becoming a lease condition.
The UN report warns that many water systems are “damaged beyond realistic prospects of full recovery”. For property, that means buildings without water and climate resilience face permanent impairment. The brown discount is how that impairment shows up on a balance sheet.
IVS, ESG & Sustainability: This is now valuation standards — The International Valuation Standards Council made this explicit in IVS 2025. Under IVS 103 Reporting and IVS 104 Bases of Value, valuers must consider ESG and sustainability factors where they affect market value or risk.
IVS and ESG reporting now require valuers to:
l Identify material ESG risks: Water scarcity, energy cost, carbon regulation, climate exposure, and occupant health are “material” for Zimbabwean property. A valuer who ignores them breaches IVS and exposes clients to mispricing;
l Reflect in inputs: Water inefficiency changes discount rates, cap rates, and projected operating expenses. Energy performance affects tenant demand. Climate exposure affects insurance and terminal value. Resilience affects vacancy assumptions; and
l Disclose: IVS 103 requires transparent reporting of ESG assumptions. “We assumed municipal water supply remains uninterrupted” is no longer a credible assumption. Market participants are pricing the opposite. Disclosure builds public trust in valuations.
The narrative is clear: value is not just what a building earns today. It is what a building will cost to operate, insure, finance, retrofit and sell tomorrow. IVS demands forward-looking analysis.
Green building: Protecting value
In a water bankruptcy and climate-stressed era, green building is risk management. It is how owners avoid the brown discount and capture the green premium. For Zimbabwe, the playbook covers the full spectrum:
Water efficiency: Rainwater harvesting, low-flow fixtures, smart metering, and water-sensitive landscaping reduce demand on Lake Chivero and local aquifers. EDGE certification cuts water use 30-50% with basic design. Greywater reuse for flushing and irrigation closes the loop.
Energy and carbon: Passive design, insulation, LED lighting, efficient HVAC, and solar PV reduce energy demand and grid exposure. Lower energy intensity means lower opex and lower carbon tax risk as global carbon pricing expands.
Materials and circularity: Using low-carbon concrete, recycled steel, and local materials reduces embodied carbon and supply chain risk. Designing for disassembly and reuse protects long-term value.
Health and well-being: Natural light, ventilation, thermal comfort, acoustic control, and non-toxic finishes reduce sick leave and increase tenant retention. WELL and EDGE Health features are now lease differentiators.
Climate resilience: Stormwater capture, flood-resistant ground floors, heat-reflective roofing, and backup power/water systems keep buildings operational during shocks. Resilience is now a rental driver and insurance metric.
Disclosure and data: Green certification provides auditable ESG data. Under IVS 103, that data supports credible valuations, satisfies bank ESG reporting, and attracts capital. Without data, there is no premium.
Developers who build green today are not chasing a trend. They are protecting tomorrow’s value. Owners who retrofit brown stock are not “going green”. They are stopping value leakage.
Value: Water, energy, resilience
The UN has told us we are living beyond our hydrological means. The market is now enforcing that reality through price. The green premium rewards buildings that use less, risk less, and disclose more. The brown discount punishes buildings that assume water, energy and a stable climate are free and infinite.
For Zimbabwe’s financial and property sector, the implication is direct: capital will flow to green and avoid brown. Under IVS, valuers must reflect that flow in every valuation report. The question for every owner, developer and lender is simple: Is your asset positioned for the premium, or exposed to the discount? In the bankruptcy era, there is no neutral. Value will follow water, energy efficiency and resilience. Green building ensures conformance with resource efficiency.
Juru is a recognised and accomplished business leader, who is the current chairman of the Green Building Council Zimbabwe, Valuers Council of Zimbabwe and CEO of Integrated Properties. His previous National leadership roles include chairman of Institute of Directors Zimbabwe, president of Real Estate Institute of Zimbabwe, inaugural chairman of REITs Association, vice-president of ZNCC. He has sat on several boards in the private and public sector. He leads passionately the transformation of Zimbabwe’s built environment to sustainability.