Want to Build Passive Houses? Ask Us Anything

“I couldn’t unsee it.”

That’s how Jimmy from June Building describes the moment Passive House and building science properly clicked. He’d been learning through Instagram, following builders like us who were talking about airtightness, ventilation, and comfort like it actually mattered, and then the Pro Clima scholarship popped up at the exact right time. Jimmy applied and he won the scholarship. He hasn’t looked back.

Jimmy’s background is pretty classic chippy-to-builder, but with a few turns. Apprenticeship in Ballarat, some travel to Banff in Canada, then Melbourne doing a mix of maintenance, commercial, and high-end residential. He moved up to the Northern Rivers in early 2020 for a lifestyle change, met his partner within months, and now has a two-and-a-half-year-old boy. The timeline matters because it explains why he’s asking the questions he’s asking. He’s early. He’s building the plane while flying it.

The episode is basically Jimmy flipping the usual format. Instead of being interviewed, he turns up with a notebook and starts picking our brains about what actually works, what doesn’t, and what builders get wrong when they first try to lift their standard. In the Northern Rivers, clients aren’t exactly walking in asking for Passive House. Jimmy hasn’t built one yet, and he’s honest about being in the first 12 months of business and taking what he can get. He’s also honest about how hard it is to retrofit performance into a house that’s already designed.

We keep coming back to the same point. Don’t lead with the label. Lead with the problem. Ask people what they hate about their current home. Drafts, noise, dust, mould, rooms that never feel right and that constant low-grade discomfort that everyone is just used to. In a humid climate, mould is the obvious entry point, because it’s everywhere and people are sick of it. The opportunity for Jimmy isn’t to convince people they want a Passive House. It’s to show them there’s a better way to build a house, full stop, and to make the benefits feel real without turning it into a technical lecture.

Jimmy asks us what details cause the most challenges, and we both go straight to retrofits. New builds are hard, but at least you can solve details early. Retrofits are where you lose time because nothing is square, nothing is level, and you don’t find the real problems until you start pulling things apart. That leads into the underquoting question, and the answer is blunt. Builders underquote labour. All labour. Detailing, wraps, window installs, internal battens, set-out, the stuff that looks small on paper but eats days on site.

Jimmy also pushes on PHPP. Matt’s view is that you need great consultants around you, and Hamish agrees, but he also pushes hard on the idea that a builder still needs to be able to read the PHPP and spot risk before it becomes a problem on site. For him, PHPP isn’t just a certification hurdle. It’s a pre-construction tool for optimising cost and performance, and for making sure you’re not delivering a “high performance” home that still feels wrong to live in.

Jimmy’s doing the work right now. He’s asking the questions that a lot of builders have but don’t want to admit they don’t know yet, and he’s building June Building around the idea of healthy, high-performing homes, whether they’re certified or not.

LINKS:

June Building: https://www.junebuilding.com.au/

Our Sponsors:

Pro Clima - https://mindful-builder.captivate.fm/proclima

MEGT - https://mindful-builder.captivate.fm/megt

Biz Tech Guru: https://www.biztechguru.com.au/


Connect w
ith us on Instagram:@themindfulbuilderpod

Connect with Hamish:

Instagram:  @sanctumhomes

Website:  www.yoursanctum.com.au/

Connect with Matt: 

Instagram: @carlandconstructions

Website: www.carlandconstructions.com/

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