Mindful Builder

“Sustainable buildings focus on what's invisible, not visible”
In this episode of The Mindful Builder, we sit down with Roberto Petruzzi, an Environmentally Sustainable Design (ESD) specialist, to unpack what building performance and energy efficiency really mean in practice. We talk about energy modelling, building science, and why the details you cannot see often matter most for comfort, durability, and running costs.
Roberto explains the unseen layers that shape high-performance homes, including airtightness, thermal performance, insulation continuity, ventilation strategy, glazing choices, and shading. These are the decisions that determine whether a home feels stable and comfortable, or whether it runs hot, cold, damp, or expensive. Sustainability is not about ticking boxes. It is about designing buildings that perform as intended in their climate.
One of the most interesting parts of the conversation is Roberto’s take on restraint. Sometimes, the most sustainable decision is choosing not to build when financial or environmental constraints do not stack up. It is not a popular message in construction, but it is an honest one. Sustainability is not only about what you add to a project. It is also about what you avoid.
We also dig into collaboration across the whole project team. Architects, engineers, builders, and clients need to be aligned early, because the biggest performance wins happen in the early design stage. If you care about sustainable architecture, energy efficient homes, ESD, and building better in Australia, this episode will give you a clearer way to think about it.
👇 CHAPTER MARKERS 👇
00:00 Welcome
03:41 Budget Reality Checks
05:48 Meet Robert Petruzzie
07:26 From Switzerland to ESD
09:24 What ESD Consultants Do
11:12 Council Plans and Greenwashing
15:17 Balancing Daylight and Thermal
16:33 Perfect Buildings and Tradeoffs
20:56 NAB HERS vs Passive House
24:41 Air Change Assumptions
25:37 HERS Rating Limitations
26:21 What Is WUFI
27:38 Retrofit Moisture Risks
30:59 Reading Mould Index
35:00 Parklife Wall Assemblies
39:02 Airtightness Skills Gap
40:02 Building the Backyard Pod
43:24 Retrofit Priorities
44:49 Curiosity for Apprentices
45:52 Mandatory Airtight Testing
46:50 Wrap Up

LINKS:
Connect with Roberto:
https://hipvhype.com/our-approach/our-people?t=Roberto-Petruzzi
Our Sponsors:
Proclima - https://mindful-builder.captivate.fm/proclima
MEGT - https://mindful-builder.captivate.fm/megt
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/
Mentioned in this episode:
Proclima Sponsor

“Commercial teaches you speed and logistics. Residential teaches you people.”
In this episode, we sit down with Alistair Meallin, Director at Y Projects, to talk about what it really takes to build high-quality custom homes in Australia. With over a decade in construction and a construction degree from the University of Melbourne, Alistair shares the lessons he learned on big commercial sites and why he ultimately moved into residential building for the client connection.
We unpack Alistair’s path through construction management and working with larger builders, including Icon Construction, and how those early years shaped the systems and standards he now brings to Y Projects. This is a practical look at site management, trade coordination, and what it means to run a building business without losing the human side of the job.
A big part of the conversation is the design process and budget reality. Alistair explains why a successful build is not just the final product, but the client experience along the way, and how small design upgrades can stack up fast. Clear communication, grounded expectations, and aligning design with budget are key to avoiding stress and cost blowouts.
We also talk team culture, staff retention, and advice for apprentices and future builders. Alistair shares why curiosity and learning the “why” matters, plus his vision for making custom-designed, high-quality residential construction more accessible.
👇 CHAPTER MARKERS 👇
00:00 Podcast Welcome
02:59 Commercial Builder Lessons
05:32 Defects And Retrenchment
07:31 Mentorship Deep End
08:56 High End Homes Shift
11:21 Client Emotions Process
15:05 Onboarding Handover Systems
17:47 EBA Unions Explained
21:50 Starting Y Projects
22:25 Footscray Development Story
28:22 Y Projects Name Origin
29:34 Leaving Commercial For Townhomes
32:21 Flexibility for Family
33:10 Retention Through Realistic Timelines
34:08 Carpenters Hours and Value
35:24 Hiring for Team Fit
35:56 Positive Site Leadership
39:22 Frozen Yogurt Budget Trap
42:57 Precon Costs and Risk
45:28 Making Custom Homes Attainable
48:43 ECI Early Budget Alignment
51:34 Architect Retention Debate
54:04 Builder Network and Support
55:19 Advice for Apprentices
59:59 Wrap Up and Contact

LINKS:
Y Projects:
https://yprojects.com.au/
Y Projects Instagram:
https://www.instagram.com/yprojects/
Our Sponsors:
Proclima - https://mindful-builder.captivate.fm/proclima
MEGT - https://mindful-builder.captivate.fm/megt
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/
Mentioned in this episode:
Proclima Sponsor

“Architecture is not just drawings and pretty renders.” In this episode, we sit down with Roger from Borland Architecture to unpack the overlap between architecture, construction, and real estate, and why those worlds are far more connected than most people realise. This is a practical conversation about problem-solving, designing for real life, and making decisions that affect how people live every day.
Roger shares his journey from Northwest Ireland to training in England, and how that hands-on background shaped his people-first approach to design. He describes his process as method acting, getting inside a client’s routines and priorities so the end result is not just an impressive plan, but a home that actually works. The kind of house that feels effortless to live in.
We also talk about the gap between architectural education and real-world building outcomes, and why sustainability and practical thinking cannot be treated as optional extras. If we want energy-efficient homes, better building standards, and high performance design at scale, the industry needs training that reflects what actually happens on site.
Finally, we dig into prefabricated high-performance homes and affordability through projects like StllHaus with Carbonlite, plus Roger’s take on real estate as a lever for better outcomes. We wrap with a Mindful Moment on AI in architecture, and why the human part of design is still the point. Listening, interpreting, and translating real needs into spaces that work.
👇 CHAPTER MARKERS 👇
00:00 Welcome
01:26 Meet Roger Borland
01:42 Farm Roots to Architecture
04:15 Architecture Training Path
05:08 Design as Method Acting
07:15 Is Architecture School Broken
10:03 Passive Solar Basics
16:44 Reading the Site Deeply
20:16 Sustainability Origins
31:47 StllHaus Prefab Vision
33:16 Build Timeline Iteration
34:12 Orientation Passive House Standards
34:46 Certification Optional Baseline
35:31 Volume Builder Partnership
37:24 Pricing Market Position
40:48 Designing Smaller Better Homes
41:47 Real Estate Design Concepts
54:03 Pre Purchase Site Analysis
58:30 Mindful Moment AI Future
01:02:06 Where To Find Roger
LINKS:
Borland Architecture:
https://www.borlandarch.com.au/
Our Sponsors:
Proclima - https://mindful-builder.captivate.fm/proclima
MEGT - https://mindful-builder.captivate.fm/megt
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/
Mentioned in this episode:
Proclima Sponsor

“Success looks great on social media. The reality is usually messier.”
In this episode, we sit down with Liam Wallis, Founder and Managing Director of HIP V. HYPE, to talk about what sustainable development really looks like behind the highlight reel. Not just pretty renders and big announcements, but pressure, responsibility, and the constant work of improving systems so each project is better than the last.
Liam shares why sustainable success is built through iteration, not perfection. Using ParkLife 2 as an example, we unpack how strategic planning, process improvement, and a long-term mindset help create high performance apartments that can scale without losing the values that matter. This is sustainable building that is practical, repeatable, and designed for real people.
We also explore how lived experience shapes better design. From simple moves like bike storage on apartment levels to bigger performance goals like an eight and a half star NatHERS rating, Liam explains how energy efficiency, comfort, and lower running costs become tangible outcomes when you design for the long game. Better thermal performance. Smarter energy decisions. Homes that support people to live well.
Finally, we talk about why experience is belief through the HV Hotel, and why community does not happen by accident. Liam breaks down the importance of community-centric design, feedback loops, and building places where residents feel connected and invested. We also touch on construction mental health, and why building better buildings means building better support systems for the people doing the work.
👇 CHAPTER MARKERS 👇
00:00 Introduction
01:38 Park Life Two Intro
10:13 Building In House Engineering
12:11 What Park Life Two Is
13:39 Lived Experience Design
16:44 Solar And Regulations
18:21 Electrification And Hot Water
23:03 NatHERS And Passive House
27:22 Design Versus Performance
29:18 HV Hotel Experience
33:59 Park Life Two Sales
36:43 Owner Occupiers Vs Investors
39:29 Collaborating With Builders
42:23 Tendering And Capability
44:08 Scaling Industry Capacity
44:56 Open Sites And Trade Schools
48:15 Parkside Project Vision
49:19 Mindful Moment Mental Health
52:51 Closing Reflections

LINKS:
Stay in HV Hotel:
https://hipvhype.com/hotel
ParkLife 2 Project:
https://hipvhype.com/projects/parklife-2

Our Sponsors:
Proclima - https://mindful-builder.captivate.fm/proclima
MEGT - https://mindful-builder.captivate.fm/megt
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/
Mentioned in this episode:
Proclima Sponsor

“I’m not just a carpenter.”
That’s the energy Sam Aitken brings to this episode, and it is exactly what the construction industry needs more of. Carpentry is not a fallback job. It is craft, problem-solving, and leadership on-site. Sam is also using social media to show what pride in the trade actually looks like, without turning it into a glossy performance.
We sit down with Sam to talk about his journey from Carisbrook to completing his apprenticeship in Ballarat, and why he stayed working with the same boss who trained him. We also unpack what that kind of loyalty says about standards, mentorship, and doing things properly, especially in an industry where good guidance can make or break a career.
Sam pushes back hard on the idea of being “just a carpenter”. Whether he is framing, finishing, or solving the tricky problems nobody else wants, he treats the work like it matters, because it does. We talk about how good carpenters understand sequencing, tolerances, and how their decisions affect every other trade on site, and why attention to detail lifts the standard of the whole build.
We also get into the future of carpentry, including specialisation, better pathways, and what it takes to develop mastery instead of just speed. Sam shares why teaching apprentices the “why” matters, and his message to new tradies is simple. Take pride in the job, keep learning, challenge the norm, and do not shrink your ambition just because someone told you it is “just carpentry”.
👇 CHAPTER MARKERS 👇
00:00 Introduction
03:13 Who Is Sam? Instagram, Confidence & Showing Up Uncurated
05:03 Volume-Build Reality: Pride, Budgets & Doing Quality Work Anyway
07:51 Sam’s Path: Apprenticeship, Small-Town Roots & Staying With One Boss
11:06 Rethinking Carpentry: Specialisation, Trade Shortages & Micro-Certs
17:15 Teaching Apprentices: The ‘Why’, Leadership Mistakes & Better Communication
23:36 Firm vs Abusive: Feedback Culture, Praise, and Raising Standards
28:18 Why Carpentry Matters: Craft Pride & ‘I’m Just a Carpenter’ Mindset
32:25 Becoming a ‘Professional’ Carpenter: Why Mastery Takes a Decade+
33:38 Staying Loyal vs Going Solo: Security, Mentors, and Motivation
34:25 The Apprenticeship Problem: Competency Gaps, Licensing, and the Housing Shortage
39:33 Social Media as a Side Hustle (Without Losing the Craft)
41:35 Building Better: Sustainable Builds, Wraps, and Site Quality Control
44:40 Should Carpenters Be Licensed? Respect, Standards, and Advocacy
47:29 Calling Out ‘Get Rich’ Courses Targeting Apprentices (Appointment Setting & High-Ticket Sales)
53:27 Mindful Moment: Must-Have Tools + Advice for New Apprentices
59:09 Final Wrap: Consistency, Rite-of-Passage Stories, and Where to Follow Sam

LINKS:
Connect with Sam:
Instagram:
https://www.instagram.com/sammy_aitken/

Our Sponsors:
Proclima - https://mindful-builder.captivate.fm/proclima
MEGT - https://mindful-builder.captivate.fm/megt
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/
Mentioned in this episode:
Proclima Sponsor