Resources for DIY Tiny House Builders in Australia


Relaible information for DIY tiny house builders in Australia

Reliable information for Australian DIY Tiny House builders

High quality information for DIY Tiny House Builders leads directly to well designed, quality built tiny houses that are comfortable year round.

The consequences of using inaccurate, inappropriate or poor information in your tiny house design or building methods will adversely effect the liveability and utility of your tiny house.

That’s why we love to share and pass along original, primary source documentation on topics essential to designing, building and living in a tiny house, which is what we’ve done below and what we encourage you to share with us so we can publish them as a resource here for others.

We don’t engage in “affiliate relationships” or receive any kickbacks for mentions here, so you can trust what we say here as our opinion with no strings attached.

So, what is “original, primary source documentation?”

Original, primary source documentation, could be a web-link to a scientific research paper, authoritative site or even a blog post of your own first hand account documenting your experience.  It’s also the way when you were in school you provided citations when writing a research paper.

We’re looking for verifiable facts and the original documents to read, not just your opinion.  This helps all tiny house builder reading the materials know where you got your information that helped form your opinion.  This allows the reader to evaluate the evidence for your opinion for themselves and maybe come to a different conclusion.

Opinions are not worthless, but when they are supported by the original, primary source documentation they become a valuable resource in the evolution of designing, building and living in tiny houses.

So, let’s trust facts, especially the verifiable ones and do research to find out the truth on all matters tiny.

Please Contribute Your Tiny House Resources!

Have you found a gold mine of great information on the internet that other tiny house DIY-ers in Australia would benefit from?

Please upload your resources using the contact form.  DIY-ers around Australia will thank you and say, “Yeah you!”

What’s the standard you must meet for a THOW in Australia?

First and foremost it’s a road vehicle that you are building when you build a Tiny House on Wheels (THOW).  It’s understandable that we get focused upon the part of a THOW that’s a house, but it must never be forgotten, that first it’s a road vehicle, so it needs to comply with all the Australian standards, if you want to have your tiny house on wheels registered in Australia.

The standard to meet is found in the VSB1 (Vehicle Standard Bulletin 1) last revised in 2009.  The VSB1  is the Australia wide standard we must all meet when building a trailer, caravan or Tiny House on Wheels (THOW).

VSB1 Vehicle Standard Bulletin June 2009 (pdf)

The VSB1 on the Department of Infrastructure, Regional Development and Cities website.

Council Regulations for Tiny Houses on Wheels

We have a whole page dedicated to this: Council regulations

Trailer registration requirements by state and territories:

VIC ~ NSW ~ ACT ~ TAS ~ QLD ~ SA ~ WA ~ NT

Wood frame building terminology:

Structural Timber Products Guide (pdf) (a bit old but still useful)

Australia Standard: Residential Timber Frame Construction for Cyclonic Areas & Engineered Wood Product Span Tables

Residential timber-framed construction (cyclonic areas) AS AS 1684.3—2010 part 3

Hyspan Span Tables Document

Reducing the weight of your THOW: Size and Density Matter

The building materials that make up a tiny house contribute in a major way to the final total weight of your tiny house.  So each individual piece of wood, pane of glass or solar panel adds to the weight of your tiny house.  

What every tiny house builder is aiming for is a well-build, strong, light weight structure that can handle the rock and roll and vibration of being a movable dwelling while still getting in under the  manufacturer’s weight rating of your trailer (see ATM – Aggregate Trailer Mass).   So when selecting building materials for a light weight tiny house, everything matters, but 2 things matter most:

1.) the dimension of your building materials (e.g. walls that are 70mm versus 90mm in thickness);

2.) the density of those materials

In terms of weight the first thing to do is to reduce the dimension of the materials you use.  If a 70×35 piece of something will do the job, then that’s better than a 90×45 piece of something, since there will be a 40% savings in weight by using the smaller dimension material.

In terms of weight the second thing to do is to reduce the density of the materials you use. If a less dense piece of something will do the job then that’s what you should us in a tiny house.

So what dimension and density of material “will do the job”?  That’s a great question, because reducing dimensions and densities can very well effect the strength performance of the material and the overall structure.  For now in this section, we’re just focusing on the factors that will reduce your overall weight and save a discussion of strength for later.  Strength is a more complex issue that has to do with how you’re using the building material; how you’re fastening them together and how the overall structure will perform moving and rattling down the road at 80-100km/hour.

Material Density Reference List:

Fred’s Handy Australian Building Material Density Reference List (pdf)

Know your Densities:  Tiny House Building Materials – they all add up… and it adds up faster with high density materials.

Density is defined as  mass per unit volume, with the common unit of measure for density being [kg/m3], which is said, “kilograms per cubic meter”.   As an example: water has a density of 1000kg/m3, which means that a meter cube of water weighs 1000kgs.  That’s heavy, so not a good idea to transport water in your tiny house.

How to Calculate Mass when you have the density and the volume:

Density [kg/m3 Volume [m3 Mass [kg]   Here’s an example: How much does a one meter length of 90×45 pine timber weigh? 

Density of Radiata Pine is about 420kg/m3

Volume is: 1000mm x 90mm x 45mm = 4,050,000 mm3   1,000,000,000 mm3/m3 = 0.00405m3

ANSWER:   420kg/m3 0.00405m3  =  1.7kg

Why do we say “mass” when we are talking about the “weight” of an object?  Technically speaking in physics mass is not the same as weight even though we use them interchangeably.   Weight is a force determined by gravity and mass is a property of the object.  

You can think of it this way, an object on the moon would weigh less than it does on earth because of the lower gravity on the moon relative to the earth.  But the mass of the object would be the same on the moon as it is on earth. 

Often mass and weight are used interchangeably as in: “I’m going to use 70×35 pine for the studs in my tiny house instead of 90×35 and save on weight (mass), plus I’ll gain an additional 40mm of internal space.” 

Wood Densities Compared  It’s important for tiny house builders to know about the various densities of wood and other material to be used in their tiny house.  

You’ll want “seasoned” or dried wood for all the wood in your tiny house, because “unseasoned” or “green” wood is substantially more dense.  Plus “unseasoned” will shrink in size and change shape as it dries out and becomes less dense.  

Density can vary a lot with wood.  I’ve provided “seasoned” densities in the handy reference guide for Australian Building Materials Density List (pdf) below. 

In Australia, the lightest and least dense wood you’ll come across is, Paulownia, which comes in at only 280 kg/m3, which makes it even lighter than Western Red Cedar (WRC) a softwood species with density of 330-385 kg/m3

In comparison, Radiata Pine is a versatile, fast-growing, medium-density softwood species with an density of 400-550 kg/m3; while Tasmanian Oak or Victorian Ash is a hardwood species with a density of approximately 650kg/m3

And for a further point of comparison for tiny house builders the density of glass is 2400–2800 kg/m3.  Yikes!  Makes a tiny house builder think twice about double glazing!

Useful Websites related to Densities and other useful building stuff


The Engineering Toolbox – Densities of Wood Species

Corrugated Steel Roofing

Here is a great resource for dimensions, weights, cover and fixing recommendations for corrugated steel roofing.

Custom Orb® is a tradename.  You can buy whichever brand you want.  We’re not making a recommendation here, just providing useful information and resources.  The following dimensions, densities, covers, and installation instructions are for all brands: Colourbond®, Zincaulme® , etc.

When you are overlapping sheets of corrugated steel you will want to know how much a single sheet with “cover”, which is somewhat less than than the full width of a sheet. Here is your answer: 762mm of cover per sheet for corrugated steel sheet.


Trying to figure the weight of a corrugated steel roof. This image gives you a good start on figuring this out.

Heaps of helpful information about laying and fastening your corrugated steel roofing here.

Gang Nail Plate or Knuckle Plate


Gang nail plates can be useful when joining rafters for a gabled roof and for other joints in a tiny house.

LED Lighting & Colour Temperature in Tiny Houses:

Colour temperature can make a big difference to the liveability of a tiny house. What is colour temperature, anyway?   The difference between “warm white” and “cool daylight” on light globe packaging is a reference to the colour temperature of the light.   You intuitively know the difference between the different colour temperatures of light.  The 24 hour, all-night petrol station has very bright bluish light.  An old-fashioned incandescent bulb, very yellow, even golden in colour. Cool colours are bluish white and have a colour temperature of over 5000K. 

The “K” stands for “degrees Kelvin” and is the unit of measure indicating the colour temperture given off by a light source. 

Warm colours are yellowish through to red, having a colour temperature between 2700 and 3000K.  Cool colours around 4000K.  A cold colour temperature 5000-6000K. 

Example of the cold colour temperature of petrol station LED lighting, typically 5000-6000K.

Example of the cold colour temperature of petrol station LED lighting, typically 5000-6000K.

Comparison of 40W Incandescent bulb (left); 8Watt Warm White CFL (center); 5Watt LED (warm white).

Comparison of 40W Incandescent bulb (left); 8Watt Warm White CFL (center); 5Watt LED (warm white).

LED lights are very energy efficient, use less power and are essential for living off the grid in your tiny house. 

You can buy LED light strips on a roll and make your own fixtures which is a great way to save money while crafting the lighting in your tiny house to suit your tastes, rather than just what’s off the self. 

Unfortunately the colour temperature of LED lights is less likely to be that wonderful warm yellow colour and more likely to feel like the petrol station lights, so test the LED’s with your own eyes before you buy them to check their colour temperature, because you cannot always trust the colour temperature on the packaging.

Bouncing LED Light in a tiny house

Another way to work with colour temperature is to bounce the light off of another surface, the colour of which you do like and it will soften the whole feel of your tiny house.  That’s what we did for the lighting the loft bed in our tiny house (below).

Warm white LED light strips splash light off the ceiling to soften the lighting in the loft bedroom of a tiny house.

Warm white LED light strips splash light off the ceiling to soften the lighting in the loft bedroom of a tiny house.

Good Reference Books: Composting & Sanitation:


The Humanure Handbook is perhaps the most comprehensive and thoroughly researched book on the topic of composting human manure available anywhere. It includes a review of the historical, cultural and environmental issues pertaining to “human waste,” as well as an in depth look at the potential health risks related to humanure recycling, with clear instructions on how to eliminate those dangers in order to safely convert humanure into garden soil. Written by a humanure composter with over thirty years experience, this classic work now includes illustrated, step-by-step instructions on how to build a “$25 humanure toilet,” a chapter on alternative graywater systems, photos of owner-built humanure toilets from around the world, and an overview of commercial composting toilets and systems.
Pathogen Removal in Compost – an interesting bit from Wikipeadia.

Good References: For Designing your Wood Stoves & Wood Burning Water Heaters

Capturing Heat Two; Fuel Efficient Cooking Stoves with Chimeys, A Pizza Oven and Simple Water Heaters: How to Design and Build them.

"Ten Design Principles For Wood Burning Stoves" by Dr. Larry Winiarski of the Aprovecho Research Center

“Ten Design Principles For Wood Burning Stoves” by Dr. Larry Winiarski of the Aprovecho Research Center

Resource for Making Green Hot Water for a tiny house:

Title: Handmade Hot Water Systems; Published: 1978; Authors: Art Sussman & Richard Frazier; ISBN: 0932708005

Very practical book for making Handmade hot water systems and the resource Fred used to make his off-grid passive solar hot water system.

Very practical book for making Handmade hot water systems and the resource Fred used to make his off-grid passive solar hot water system. 

Rocket Stove Design for Making lots of Hot Water

If you like rocket stoves and wondered how to make hot water for a bunch of people learn from the folks at Milkwood Permaculture, by reading this entitled: Rocket Stove Water Heater Redux by Kirsten Bradley, Milkwood Permaculture

Rocket Stove Water Heater Redux by Kirsten Bradley @Milkwood Permaculture

Rocket Stove Water Heater Redux by Kirsten Bradley @Milkwood Permaculture

Batteries and Solar Power

Best batteries to use for off grid tiny house on wheels in Australia

One of the Rainbow Power Company‘s (Nimbin, NSW) stated aims is: “to educate the general public in aspects of using energy from renewable sources, and living and developing in a sustainable way.”  A website with lots of useful resources from fair dinkum home grown Australian experts on solar energy.

Battery University™ is a free educational website offering hands-on battery information to engineers, educators, media, students and battery users alike. The tutorials evaluate the advantages and limitations of battery chemistries, advise on best battery choice and suggest ways to extend battery life.  The information is compiled from specifications and independent test laboratories as well as crowd sourcing. Average readings are used when practical rather than citing research papers, as lab results are often not repeatable in real life. This differs from scientific papers published by academia and research laboratories for scientists.  Battery University™ is sponsored by Cadex Electronics Inc., a technology provider specializing in the design and manufacture of advanced battery packs, BMS, chargers and diagnostic devices.

Our blog posts on:

The research is in: When people downsize to tiny houses, they adopt more environmentally friendly lifestyles

This is a great article from The Conversation, that talks about ‘s doctoral thesis which performs an Ecological Footprint Analysis of Tiny House Downsizers.  

When people downsize to tiny houses, they adopt more environmentally friendly lifestyles by Ph.D. Candidate in Environmental Planning and Design, Virginia Tech University

Our Trailers

View our choice of trailers here.

Property zoning

Victoria: The land channel