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Vertical gardens earn their place on a building beyond how they look. They can reduce surface wall temperatures by up to 10 degrees, which lowers cooling costs, help buildings meet Green Star and council environmental requirements, and support ESG reporting that owners and asset managers increasingly need for stakeholders. For tenants, a well-maintained vertical garden also plays into building appeal and wellbeing, which matters when competing for leases in a crowded market.
IN THIS ARTICLE
- The financial case: thermal performance and running costs
- The compliance case: Green Star and council requirements
- The ESG and reporting case
- The tenant appeal and wellbeing case
- What this means for a facilities budget
- Frequently asked questions
A vertical garden is often proposed as a design feature, which makes it easy for a facilities budget to treat it as optional. But there's a genuine business case underneath the aesthetics, one that's worth putting in front of whoever signs off on the spend.
The financial case: thermal performance and running costs
Vertical gardens can reduce surface wall temperatures by up to 10 degrees by intercepting solar radiation and through evaporative cooling. On a high-rise with significant glass or dark-clad surfaces, that translates into a measurable reduction in cooling load on the sections of the building behind the greenery, which shows up as lower energy costs over time.
The compliance case: Green Star and council requirements
Many Australian councils now factor green infrastructure into development and environmental requirements, and vertical gardens contribute directly to meeting Green Star ratings where a building is pursuing one. For new developments or major refurbishments, this can shift a vertical garden from a nice-to-have into part of what's needed to get a project across the line.
The ESG and reporting case
Asset owners are under growing pressure to demonstrate environmental commitments to investors, tenants and the market. A vertical garden is a visible, easily communicated example of that commitment, sitting alongside less visible initiatives like energy efficiency upgrades or waste reduction programs in an ESG report.
The tenant appeal and wellbeing case
Biophilic design, built environments that incorporate natural elements, is consistently linked to improved occupant wellbeing, and a vertical garden is one of the more visible ways a building can offer it. For asset managers competing for tenants in a crowded commercial market, that's a genuine point of difference on a building tour, not just decoration.
What this means for a facilities budget
None of this means a vertical garden pays for itself overnight. But when the thermal performance, compliance value, ESG reporting benefit, and tenant appeal are put together, the business case looks different to a line item for "greenery." It's worth framing it that way when the spend needs sign-off.
Frequently Asked Questions (FAQs)
Do vertical gardens actually reduce energy costs?
They can. By reducing surface wall temperatures through shading and evaporative cooling, vertical gardens lower the cooling load on the parts of a building behind them, which reduces energy use over time.
Can a vertical garden help with Green Star certification?
It can contribute. Green infrastructure like vertical gardens is one of several factors that can support a Green Star rating, alongside other sustainability measures.
Is the ESG benefit of a vertical garden just marketing?
Not entirely. It's a visible commitment that supports broader ESG reporting, but it works best alongside genuine sustainability measures rather than as a standalone gesture.
How much does a vertical garden cost to install and maintain?
This varies significantly based on size, system type, and plant selection. Our team can provide a cost estimate based on your building's specific facade and requirements.
