I sold a house in Leichhardt last month that had been fitted out with a comprehensive smart home system. Automated blinds, Lutron lighting throughout, a Sonos whole-home audio system, smart locks on every external door, and a Control4 central hub that managed everything from a single app.

The vendor spent roughly $45,000 on the system over three years. When I told him it would probably add $15,000-25,000 to his sale price, he wasn’t thrilled.

Smart home technology creates a frustrating paradox in property. Buyers consistently rank smart features highly on their wish lists. Real estate portals show that listings mentioning smart home features receive more engagement. But when it comes to actual valuation impact, the picture is much less clear.

What Buyers Say They Want

REA Group’s buyer sentiment research consistently shows smart home features ranking in the top ten desired property features, particularly among buyers under 45. Smart security systems, automated climate control, and smart lighting are the most frequently cited preferences.

The marketing impact is real. Properties with smart home features photograph well, they give agents something interesting to talk about in marketing copy, and they create memorable inspection experiences. Showing a buyer that you can dim the lights, close the blinds, and start music playing with a single voice command makes an impression.

But there’s a gap between what creates buyer interest and what drives up offers.

What Valuers Actually Account For

Here’s the core problem: formal property valuations don’t have a standard methodology for pricing smart home technology.

I spoke with two Sydney-based valuers about how they treat smart home features. Both said essentially the same thing: they’ll note smart home features as a positive attribute, similar to how they’d note quality fittings or good landscaping. But they don’t assign a specific dollar value to the technology itself.

The reason is depreciation. A $45,000 smart home system installed three years ago might have components that are already outdated. Technology generations turn over far faster than property cycles. A Control4 system installed in 2023 works perfectly well, but the market has moved on to newer platforms with better integration, better voice control, and lower costs.

Compare this to a $45,000 kitchen renovation, where a valuer can confidently say it adds a quantifiable amount to the property value based on comparable sales data. Kitchens don’t become obsolete. Granite benchtops installed in 2023 are still granite benchtops in 2026.

The Features That Actually Add Value

Not all smart home technology is equal from a valuation perspective. Some features are beginning to show consistent positive impact in comparable sales analysis.

Solar and Battery Systems

Solar panels with battery storage are the clearest example of technology that valuers consistently recognise. There’s strong data showing that properties with quality solar installations sell for more than comparable properties without them. The Clean Energy Council estimates that a well-specified solar system adds roughly 3-4% to property value in most Australian metropolitan markets.

The reason is straightforward: solar and battery systems have a clear, quantifiable economic benefit (reduced electricity costs) that persists for decades. Valuers can model the value of future energy savings.

Integrated Security Systems

Quality security systems with monitored alarms, camera systems, and smart locks appear to influence buyer willingness to pay, particularly in suburbs where security is a known concern. The impact is harder to isolate from other factors, but agents I’ve spoken with consistently report that comprehensive security systems are a positive factor in buyer decision-making.

EV Charging Infrastructure

This is emerging as a genuine value-add. Properties with dedicated EV charging capability, particularly those with a properly installed three-phase charger in the garage, are increasingly attractive to buyers who already own or plan to purchase an electric vehicle. Given that EV adoption in Sydney is accelerating rapidly, this is likely to become a standard buyer expectation within a few years.

Climate Control Automation

Ducted air conditioning with zone control and smart thermostats is valued positively, though this is more about the quality of the HVAC system itself than the smart controls. A good ducted system with basic manual zoning is valued similarly to the same system with smart thermostat control.

Features That Don’t Move the Needle

Whole-Home Audio

Buyers might enjoy it during the inspection, but integrated audio systems rarely influence purchase price. The technology is too personal — one buyer’s ideal whole-home audio setup is another buyer’s pointless complication. Many buyers would rather install their own preferred system.

Smart Blinds and Lighting Scenes

These create great inspection moments but don’t typically show up in comparative market analysis as price differentiators. They’re pleasant features, not value-adding ones.

Voice Assistant Integration

Alexa and Google Home integration is essentially free and ubiquitous. It’s not a differentiating feature.

My Advice for Vendors Considering Smart Home Investment

If you’re thinking about installing smart home technology specifically to increase your property’s sale price, I’d suggest being strategic rather than comprehensive.

Invest in solar and battery. This has the clearest valuation impact, the most robust data supporting it, and ongoing economic benefits while you own the property.

Install EV charging if you have off-street parking. The market is moving quickly toward this being an expected feature.

Ensure your security system is modern and comprehensive. Smart locks, cameras, and monitoring are valued by buyers.

Skip the expensive whole-home automation systems unless you genuinely want them for your own use. The gap between installation cost and valuation impact is too large to justify as a pre-sale investment.

The Leichhardt vendor with his $45,000 system wasn’t wrong to install it — he enjoyed it for three years. But he should have understood from the start that it was a lifestyle expense, not an investment in his property value.