As Gauteng heads towards the 2026/27 summer, El Niño is becoming increasingly relevant for homeowners across Johannesburg and Midrand.
For property owners, however, the important question isn't simply whether the summer will be hotter or drier. It is how prepared your property is for periods of heat, reduced rainfall and possible pressure on municipal water supplies — and whether that preparedness could influence buyers when you eventually sell.
What does El Niño mean for Gauteng?
El Niño is a naturally occurring climate phenomenon associated with warmer ocean temperatures in the tropical Pacific. Although it occurs thousands of kilometres from South Africa, it can influence our weather. In South Africa's summer-rainfall regions, including Gauteng, El Niño is generally associated with an increased likelihood of hotter and drier conditions. That doesn't guarantee drought or mean Johannesburg won't experience its usual summer thunderstorms. Seasonal rainfall is influenced by several different climate systems. For homeowners, the sensible approach is therefore not to panic, but to prepare for the possibility of a hotter, less predictable summer.
Start with your property's water use
Before investing in expensive equipment, understand where your household uses water. Look for leaking taps, toilets that continually run, ageing irrigation systems, leaking swimming pools and unnecessarily large areas requiring regular irrigation. For properties with substantial gardens — particularly those found around Midrand, Kyalami, Carlswald, Blue Hills and surrounding areas — landscaping can represent a significant part of household water consumption. Consider whether portions of lawn could eventually be replaced with indigenous or water-wise planting, whether irrigation is being used efficiently and whether rainwater could be captured rather than simply disappearing into stormwater drains. These aren't only drought measures. They can reduce the ongoing cost and maintenance requirements of owning the property.
Is backup water becoming the new solar?
South African homeowners have already experienced a dramatic shift in how buyers think about electricity. Not long ago, solar panels, batteries and inverters were regarded as valuable extras. Then buyers increasingly began asking about them before they even viewed a property. Water security could gradually follow a similar path.
A potential buyer may increasingly want to know:
“What happens here when the municipal water goes off?”
A home with a properly designed backup water system may therefore have an advantage over a comparable property without one.
Possible solutions include:
- Backup water tanks
- Rainwater harvesting
- Boreholes, where appropriate
- Filtration systems
- Grey-water systems
- Water-efficient irrigation
- Pool covers
- Water-wise landscaping
But sellers should be careful not to assume that installing any one of these will automatically increase a property's value by the amount spent. Resilience improves marketability more reliably than it guarantees a specific increase in valuation. Its real value may be helping your property stand out when buyers compare similar homes.
If you already have water backup, understand what you own
This is particularly important if you're thinking about selling. Simply telling an estate agent that the property “has JoJo tanks” doesn't give a buyer much useful information. Know the capacity of your tanks and what they supply. Does stored water supply the entire house or only toilets and irrigation? Is the system automatically activated when municipal supply stops? Does it require a pump? Is the pump protected by backup electricity? How long could the stored water reasonably support the household? Similarly, if you have a borehole, know what it is used for and retain any relevant information or documentation relating to the installation and water quality.
A well-documented system is far easier for an estate agent to market than equipment nobody fully understands.
Think about the garden a future buyer will inherit
A spectacular garden can add enormously to the appeal of a property. But buyers also see the maintenance responsibility that comes with it. During hotter and drier periods, a huge lawn requiring constant irrigation can become an expense rather than simply an attraction. This doesn't mean ripping out established gardens. Instead, homeowners planning improvements over the next few years should consider how landscaping might become more sustainable through indigenous planting, better irrigation zoning, mulching, rainwater harvesting and reducing unnecessary lawn areas. A beautiful garden that requires less water can become a genuine selling point.
Pay attention to your swimming pool
Pools can lose substantial amounts of water through evaporation during prolonged periods of hot, dry weather. A quality pool cover can reduce evaporation while helping to keep debris out of the water. Homeowners should also investigate unexplained drops in water level. Continually topping up a leaking pool wastes water and may indicate a maintenance problem that will eventually need to be addressed before selling. If you're preparing a property for market, a clean, properly maintained pool is an asset. A visibly leaking or neglected one can quickly become something a buyer mentally adds to their renovation budget.
Dry weather doesn't mean you can ignore storm preparation
A drier summer can still produce intense Highveld thunderstorms. That makes preventative maintenance particularly important. Before the main summer rainfall period, inspect your gutters, downpipes, roof waterproofing, stormwater drainage and large trees close to the house. Clear blocked drains and gutters and repair known roof leaks before the first major storm exposes them. Sellers should pay particular attention to these issues. A small maintenance problem that could have been repaired inexpensively can become a much bigger issue once a buyer's inspector identifies water damage, cracking or evidence of ongoing leaks.
Sellers: resilience needs to be marketed
If you've already invested in making your home more resilient, make sure buyers know about it. When preparing to sell, give your property practitioner accurate information about:
- Backup water-storage capacity
- Boreholes
- Filtration systems
- Rainwater harvesting
- Grey-water systems
- Irrigation
- Pool covers
- Water-wise landscaping
- Solar panels
- Inverters and batteries
- Generators
Where possible, retain invoices, warranties, specifications and installation information. Think of it as creating an infrastructure file for your home. When two properties offer similar accommodation and are competing for the same buyer, the house that can clearly demonstrate lower dependence on municipal services may have an important advantage.
Estate homeowners should understand the bigger picture
If you live in an estate, your property's resilience isn't determined only by what happens inside your boundary. Find out what contingency arrangements your estate has. Does it have backup water storage? Boreholes? Backup power for pumps? What happens during an extended municipal interruption? How are common gardens irrigated? This information could become increasingly relevant when you eventually sell. A well-managed estate that can demonstrate effective infrastructure planning may be easier for buyers to choose than one with repeated service interruptions and little contingency planning.
Will El Niño affect the value of my property?
El Niño itself is unlikely to determine the value of your Johannesburg or Midrand home. Interest rates, affordability, location, security, property condition and supply and demand remain much more important drivers of value. The more interesting question is whether property resilience is becoming another factor buyers use to differentiate between homes.
Consider two similar houses at similar prices.
One depends entirely on municipal electricity and water.
The other has solar and battery backup, sensible water storage, efficient landscaping and well-maintained infrastructure.
Which one would you choose?
Increasingly, buyers may regard these features not as luxuries, but as part of the practical cost of owning a home.
If you're considering selling in the next 12 months
Don't rush out and spend hundreds of thousands of rand trying to make your property completely independent. Not every improvement will deliver a return when you sell.
Instead, start with the fundamentals:
Repair before you upgrade.
Fix leaks, damaged irrigation, waterproofing problems, blocked drainage and neglected pools.
Understand what you already have.
Document solar, water-storage, borehole and backup systems properly.
Improve efficiency where it makes financial sense.
Relatively inexpensive improvements such as pool covers, irrigation repairs and water-wise landscaping may make more sense than major infrastructure projects immediately before selling.
Ask what buyers in your area actually value.
A R150,000 improvement that buyers won't pay extra for isn't necessarily a good pre-sale investment.
Speak to an experienced local property practitioner before committing substantial money to improvements specifically intended to increase your sale price.
The resilient home
South African property has continually adapted to changing circumstances. Security influenced the way our homes were designed. Load shedding changed the way we power them. Water availability may increasingly influence how we landscape, maintain and equip them. Nobody can say exactly how the 2026/27 summer will unfold in Johannesburg and Midrand. But homeowners don't need certainty about the weather to make sensible decisions about their properties.
Maintain what you have. Reduce unnecessary consumption. Understand your property's infrastructure. Keep records of improvements. And when you eventually sell, make sure buyers understand the benefits of what you've invested in.
Because increasingly, a desirable home isn't defined only by bedrooms, bathrooms and finishes. It's also about how well that home works when the services around it don't.
Thinking about selling?
Before spending heavily on solar, water backup, landscaping or other improvements specifically to prepare your property for sale, speak to an LWP Properties area specialist.
We can help you understand which improvements are likely to matter to buyers in your particular market — and which may not justify the expense.
LWP Properties | Beyond the Sale
www.lwp.co.za
011 468 5900
