Mulholland Design & Construction

05/12/2025

🎉 WE DID IT! Blower Door Test Success ✅

0.33 air changes per hour at 50 pascals—we absolutely CRUSHED the Passivhaus certification standard!

A step closer to achieving certification 🎯

Today's blower door test proved what we've been building toward: homes so airtight, so perfectly sealed, that every breath you take is filtered, every degree of comfort is locked in, and your energy bills stay beautifully low. 🍃

Conditions were right today to carry out the Certified Blower Door Test. See the data—0.32–0.34 ACH across both depressurization and pressurization. That's not just a number. That's science. That's performance. That's your forever home, certified and guaranteed.

No marketing fluff. Just measured, proven excellence.

This is what we build 🏡

Big thanks to Passive Tech for making today happen!

29/10/2025

Science in action at our Eltham project 🎯

This is what sets a certified Passivhaus apart — measurable, guaranteed performance.

Working with Drew from PassiveTech our blower door test proves what we promise: an airtight building envelope that keeps your home comfortable year-round while slashing energy costs.

The numbers don't lie. While a standard Australian home might achieve 10-15 air changes per hour, we're targeting less than 0.6.

That's the difference between a home that leaks energy and money, and one that protects your investment for generations.

This is the Passivhaus difference—science over shortcuts, performance you can measure, comfort you can feel.

📍 Eltham, VIC
🎯 Testing by Drew,
🏆 Certified Passivhaus Standard
💚 Building homes you can truly breathe in
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27/10/2025

We met passivhaus standard straight off the bat at our preliminary blower door test !

Taking a moment to reflect on the scale of this build! Here you can see the ‘bones’ of the making of a passivhaus

27/08/2025

It’s a tight fit!! Demo stage at this Commercial Renovation and extension in Glen Huntley. Laneway access is the best option on this build. The traditional brick terrace has a shop frontage. The space has been divided to allow business as usual out the front, and construction out the back. Like all of Melbournes terrace houses, we have lots of dust. We’re cutting up the slab, creating openings…

26/06/2025

Heritage renovation in the heart of Melbourne opening up the home to a landscaped garden.
We provided The Planning Application, Building permits and of course the build.

25/02/2025

The beginning of a Certified Passivhaus in Eltham….

05/12/2024

Eltham South Passivhaus project. Cladding is coming up a treat. HRV penetrations are in thanks to the the team

13/11/2024

Mobility access ramp crafted in F27 Spotted Gum. A stable timber to reduce movement in the boards. The style compliments the traditional facade of this property, and built to Australian Standards- Custom handrail to come…

17/10/2024

Steel day, love it when a frame comes together! The cathedral ceilings are going to be impressive on this sustainable build 👏

16/10/2024

Frame Stage at our Eltham South Passive House Project...

30/09/2024

26/09/2024