ALL certified PH builds in NZ have been written up

Here’s a handy short cut to case studies on all certified Passive House projects in New Zealand to date. Phcert.nz will take you to the Sustainable Engineering website’s case study...

by Jason Quinn

Updated: Mar 2026

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PHPP10 launched

Update [June 2022] PHPP10 is now available in English. In case you hadn’t heard, PHPP10 was released at the 25th International Passive House conference in Wuppertal last month. That’s the...

by Jason Quinn

Updated: Jun 2022

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Why bigger is easier

There’s still lots of talk about the cost premium to build a detached family home to the Passive House standard and how much that premium is. Let’s not overlook that...

by Jason Quinn

Updated: Oct 2021

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We won’t get to zero carbon without energy efficient homes

It’s great to see this piece in popular media, outlining research that shows that, like the rest of the world, New Zealand’s path to a zero carbon future requires homes...

by Jason Quinn

Updated: Mar 2026

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Kāinga Ora will drive Passive House uptake across the whole building sector

Kāinga Ora’s announcement of its first Passive House pilot project, the 18-unit Bader Ventura apartment building in Mangere, Auckland, is receiving a lot of attention with stories running across national...

by Jason Quinn

Updated: Mar 2026

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Airtight building resources

Here’s an excellent resource on planning, training, mocking-up and doing QA on an airtight building project. It’s very graphical and has great links to even more resources.  There’s video as...

by Jason Quinn

Updated: Aug 2021

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Homestar V5 a huge improvement

The just-released Homestar V5 tool is going to lift the performance of homes using the NZ Green Building Council (NZGBC) rating system because the PHPP software is now the engine...

by Jason Quinn

Updated: Mar 2026

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‘Worlds Apart’ graphic depicts future pathways

I spend most of my waking hours focused on improving the performance of the buildings: for the sake of the humans who live, work and play within them and for...

by Jason Quinn

Updated: Aug 2021

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Breaking news: Warmer, healthier homes are worth more

This recent Stuff story was a pretty well-considered look at whether improvements in thermal performance influence sale prices. I’ve covered this ground before, in my book and in this blog...

by Jason Quinn

Updated: Jul 2021

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Leadership needed in NZ educational sector

New Zealand got underway with Passive House before our Aussie mates but sadly we’ve been thoroughly surpassed in the last couple of years. We have no Passive House projects to...

by Jason Quinn

Updated: Mar 2026

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NZIA adds weight to call for better Building Code

In this high-profile recent opinion piece, Marcus Hogan (professional practice director at Te Kāhui Whaihanga New Zealand Institute of Architects), points out that even new homes built to meet the...

by Jason Quinn

Updated: Jul 2021

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The take-back effect

Folks are illogical. Including me. I think a fizzy drink should cost about $1 and don’t want to pay more—but $5 for a coffee is alright. Weird. Well it turns...

by Jason Quinn

Updated: Mar 2026

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Energy-efficient builds increase sales price: Aus study

I’m often asked for data on the price premium a certified Passive House would command compared to the same house built to the legal minimum requirements of the New Zealand...

by Jason Quinn

Updated: Mar 2026

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Passive House performance would fix the dry winter energy problem

The stumbling block to a fully renewable energy grid in New Zealand is what to do in a dry winter, when electrical demand peaks but there’s not enough water in...

by Jason Quinn

Updated: Jun 2021

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Passive House Climate Files for NZ

As of 13 December 2017 there are six additional PHI certified climate files for NZ. These now cover all of NZ including the Chatham Islands. It is important to note...

by Jason Quinn

Updated: Mar 2026

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Generic slab edges default should be B’/2=2m

A slab edge is one of the most common thermal bridges we see in New Zealand. In a traditional timber framed building on a concrete slab, the perimeter thermal bridge...

by Toby Brooke

Updated: May 2021

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Health burden of cold damp houses costs millions every year

I’ve often wondered in the past exactly what percentage of New Zealand’s health burden is due to our damp and cold homes. Well I obviously didn’t look in the right...

by Jason Quinn

Updated: May 2021

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Lessons from failed UK retrofit programmes

This excellent top-level round-up of multiple UK retrofit programmes sadly reveals how many were really poorly done. The most recent was a politically driven voucher system that lasted less than...

by Jason Quinn

Updated: Mar 2026

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