Mindful Builder

“I couldn’t unsee it.” Jimmy from June Building explains how Passive House building science finally clicked, after learning through Instagram and then winning the Pro Clima Passive House Tradesperson scholarship. Today Jimmy flips the format and turns up with a notebook full of questions on Passive House for us. Questions around high-performance homes, airtightness, mechanical ventilation, and what actually changes when you start building for comfort, not just compliance.
Jimmy’s background is classic chippy-to-builder with a few turns that matter. Apprenticeship in Ballarat, travel to Banff in Canada, then Melbourne across maintenance, commercial, and high-end residential before moving to the Northern Rivers in early 2020. He’s now in the first 12 months of June Building, building the plane while flying it, and trying to bring Passive House principles into a market where clients aren’t necessarily asking for certification, even though mould, humidity, and comfort issues are everywhere.
We talk about why you shouldn’t lead with the “Passive House” label and instead start with the problems people already feel in their current home: drafts, noise, dust, mould, and rooms that never feel right. Jimmy asks what details cause the most challenges, and we go straight to retrofits, because nothing is square, nothing is level, and you don’t find the real issues until you start pulling things apart. We also get blunt about where builders underquote when they move into high-performance construction, and it’s labour, all labour, especially detailing, wraps, window installs, battens, and set-out.
Jimmy also pushes on PHPP and how builders should use it. PHPP isn’t just a certification hurdle. It’s a pre-construction tool for optimising cost and performance, spotting overheating risk early, and avoiding the nightmare of delivering a “high performance home” that still feels uncomfortable to live in. If you’re a builder, architect, or homeowner curious about Passive House Australia, high-performance building, and what it takes to lift your standard without blowing your budget, this episode is a solid place to start.

CHAPTER MARKERS
00:00 Introduction
00:41 Pro Clima Scholarship Story
05:12 Discovering Passive House
06:04 Selling Performance in Byron
11:09 Mould Messaging Without Labels
14:10 Education-Based Marketing Debate
18:03 Building a Social Audience
23:57 Rapid Fire Passive House Qs
25:02 Retrofit Details and Underquoting
27:01 Estimating Labour and Costs
32:05 Estimating Passive House
34:27 Overheating and Shading
35:34 Reading PHPP as Builder
38:13 PHPP Course and Value
40:53 When to Use WUFI
42:44 Retrofit Wall Failures
44:14 Skills to Learn Early
45:14 AI Tools for Builders

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

Our Sponsors:
Pro Clima - https://mindful-builder.captivate.fm/proclima
Biz Tech Guru: https://www.biztechguru.com.au/
Wunderbuild: https://www.wunderbuild.com/

Connect with us on Instagram: @themindfulbuilderpod
Connect with Hamish:
Instagram: @sanctumhomes
Website: www.yoursanctum.com.au/

Connect with Matt:
Instagram: @carlandconstructions
Website: www.carlandconstructions.com/

You can’t build ten versions of the same house, live in them for ten years, and then pick the best one.
We’re sitting down with thermal modelling specialist Cameron Munro to talk about why “model early and model often” should be a non-negotiable part of pre-construction, whether you’re chasing Passive House or just trying to build a home that actually feels good to live in.
We explain what modelling is really for (direction, not perfection), how to run “what if” scenarios across glazing, insulation, shading, and floor build-ups, and why the best decisions come from cost-benefit thinking instead of intuition. We also get into the real-world gap between models and lived performance, the risk of not updating models as drawings change, and why overheating is the mistake that bites hardest when you skip the final iteration.
If you want fewer ugly conversations later, this is the episode.

CHAPTER MARKERS
00:00 Introduction
02:08 Modelling As A “What If” Tool
06:31 Where To Spend Your Effort (Heat Loss Breakdown)
09:04 Under-Slab vs Over-Slab: Thermal Bridges And Payback
13:34 Pro Clima Detail Library Shoutout
15:17 “You Don’t Need Triple Glazing In Melbourne” (Context Matters)
17:00 Overheating Risk And Why Passive House Classic Is Safer
18:07 Shading: External Beats Internal
24:24 When To Bring A Modeller In (Concept Stage)
33:25 Why You Must Update The Model As Drawings Change
35:37 Treat Modelling Like Engineering
37:30 Builder Liability And Using A Modeller To Reduce Guesswork
45:14 Keep It Simple: Standard Details And Practical Wins

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 with us on Instagram: @themindfulbuilderpod
Connect with Hamish:
Instagram: @sanctumhomes
Website: www.yoursanctum.com.au/

Connect with Matt:
Instagram: @carlandconstructions
Website: www.carlandconstructions.com/

“At some point, someone’s paying for that tender.”
Tendering sounds fair on paper. Same drawings, three builders, pick the best price, move on.
But once you understand what it actually costs to price a job properly, and how tendering rewards omissions, risk loading, and variations, it starts to look less like a “market test” and more like a costly way to kick off a relationship.
In this episode, Hamish and Matt break down what a tender really is, why the classic draw, bid, build model creates isolation and blame, and why negotiated tendering (paid pre-construction with clear costing stop points) changes the incentives for everyone.
They also get into the uncomfortable bits architects and clients don’t always see: the real cost of tendering, why prices can come back wildly different, how gaps in documentation become legitimate variations, and why trust matters more than pretending you can compare builders like-for-like.
If you’ve ever wondered why a project can look “fully resolved” and still blow out, or why builders hate competitive tendering, this one will probably ruffle a few feathers.

CHAPTER MARKERS
00:00 Introduction
01:05 The Classic Tender Process And Why It Starts Badly
02:10 What “Resolved Documents” Really Means
04:19 What Gets Left Out Becomes Variations
05:12 Why Projects Go Over Budget And Who Gets Blamed
09:06 Tender Vs Negotiated Tender Depends On The Builder
11:17 Risk Loading And Why Tendering Increases Markups
13:01 Variations In Tender Jobs Vs Negotiated Jobs
16:00 Wild Price Gaps And Why Tender Numbers Can Be Useless
23:00 What A Negotiated Tender Actually Is
35:26 Trade Quotes, RFIs, And Reducing Risk Before Site
41:22 Tendering Feels Like Isolation
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 with us on Instagram: @themindfulbuilderpod
Connect with Hamish:
Instagram: @sanctumhomes
Website: www.yoursanctum.com.au/

Connect with Matt:
Instagram: @carlandconstructions
Website: www.carlandconstructions.com/

Good design isn’t something you look at. It’s something you live in.
We sit down with James Goodlet from Altereco Design to talk about what “good design” actually means in the real world, and what a proper pre-construction process looks like when it’s done properly.
We get into why comfort is more than temperature, how designers extract the details that shape the lived experience, and why due diligence and risk management need to happen before anyone starts drawing. We also break down why James brings builders in early, how he thinks about budgeting versus estimating versus contract, and why clients need clarity on exclusions and allowances instead of getting buried in noise.
We talk contingency versus inflation, the feedback loop between builders and design teams that improves outcomes over time, and a simple practical fix for smoother pre-con. Whiteboard the whole timeline, agree on milestones, and make sure everyone knows who owns what.
CHAPTER MARKERS
00:00 Introduction
01:27 Meet James Goodlet
02:16 Good Design Is Seen Or Felt?
03:00 Comfort Beyond Temperature (Hempcrete House)
04:12 What Comfort Actually Includes (Sound, Air, Light)
07:08 James’ Path Into Design
11:25 Why “Alter Eco” And Sustainability
12:52 Pro Clima Detail Library
14:00 Alignment First: The Real Start Of Design
17:21 The Client Questionnaire (Sleep, Routines, Storage)
21:46 Due Diligence Before Sketching
28:10 Choosing Builders Based On Fit
37:00 Budgeting vs Estimating vs Contract
42:45 Contingency And Inflation
48:22 How Designers Read Trade Breakdowns
49:00 The Feedback Loop With Interiors

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 with us on Instagram: @themindfulbuilderpod
Connect with Hamish:
Instagram: @sanctumhomes
Website: www.yoursanctum.com.au/

Connect with Matt:
Instagram: @carlandconstructions
Website: www.carlandconstructions.com/

A proper site visit isn’t a stroll around the block. It’s where you catch the stuff that turns into $30k surprises later.
We’re back with Brad from Sanford Buildco to have a conversation about what a site visit should actually involve, and why doing it properly is one of the simplest ways to protect your time, your margin, and your sanity.
We break down how our checklists differ across inner-city and rural sites, but still cover the same core categories: access, services, water management, demolition risk, and the existing building. We talk through real examples like tram and train line constraints, construction zones and parking permits, combined drains, earthenware stormwater, boundary trap upgrades, three-phase power, septic fields, and when a sump and pump becomes the only option.
We also get into the stuff that catches builders out if you don’t look early: neighbour water issues you can’t control once you’re hard on the boundary, asbestos you can’t spot from photos, and demolition rule changes that can turn normal waste into hazardous waste overnight. The theme is simple: gather better information now, and you’ll have fewer ugly conversations later.

CHAPTER MARKERS
00:00 Introduction
02:00 Site Visit Checklist
02:49 Access Constraints
03:40 Rural Access Costs
06:00 Plumbing Red Flags
07:10 Sewer Plans and Cameras
10:47 Power Upgrades Reality
11:45 Septic and Stormwater Pumps
14:38 Service Locators and Photos
16:58 Electrical Planning
20:09 Neighbour Water Risks
21:27 Retrofit Foundation Checks
22:43 Asbestos Budgeting
27:13 Digital Site Reporting
30:14 Parking Constraints
33:57 Demolition Rules and EPA
35:58 NBN and Service Scope

Brad - Sanford Buildco Instagram: https://www.instagram.com/sanfordbuildco/?hl=en

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/
Wunderbuild: https://www.wunderbuild.com/
Connect with us on Instagram: @themindfulbuilderpod
Connect with Hamish:
Instagram: @sanctumhomes
Website: www.yoursanctum.com.au/

Connect with Matt:
Instagram: @carlandconstructions
Website: www.carlandconstructions.com/