Planning Your Trailer Build
The Key to Success
We want to help you:
- Save TIME
- Save MONEY
- Understand what tools and resources you need to get the job done.
What to consider before buying plans
What are my local regulations?
This is the best place to start. You need to consider:
- Will I be able to register my new trailer?
- What legislation will I need to meet? This includes legislation for brakes, lights, trailer size, etc. We’ve provided some useful links for Australian residents.
- Will my vehicle be able to safely tow the trailer? Check your tow ball weight and tow limits specific for your vehicle.
What tools & Equipment will I need?
We’ve written a complete tools and equipment guide to get you started on your DIY build.
How will I pickup / collect my materials?
Ironically, you may need a trailer to pick up your materials to build the trailer.
Alternatively, arrange to have the materials delivered. Many steel suppliers will also cut your materials to length, which may mean you can collect your materials in your ute.
What to consider prior to building
Customisation
One of the best things about building your own products is bringing your ideas to life through customisation. Our plans are a guide only – giving you a solid starting point.
If you intend to make any adjustments to the plans, you should do so early on in the process. This will ensure you order the correct quantity of material and parts.
What stock do i need?
Our DIY trailer and ute tray plans come with detailed cutting and part lists. You can use these to assist with ordering the required lengths of stock and required components.
Should I source components prior to starting my build?
It is a good idea to have all of, or most of your steel and components prior to starting. Why? Because if you can’t source a certain part, component or size of steel, you may need to make some changes – this is best done prior to starting the project.
We recommend going through the part and cutting lists and talking to a supplier first to see what components you can get locally and what parts you may need to order from elsewhere.
This is even more important for the confident DIY builder who is hoping to make some adjustments to aspects of our trailer plans. Remember, any adjustments you decide to make may not be compliant and may require re-engineering. Our plans have been engineered as they are – with no adjustments! So, make sure you know what you’re doing before deciding to make changes.
How will you turn over your trailer during the building / painting process?
This one gets most first-timers as you may not realise how quickly the weight adds up. It is important to consider how you will flip the trailer over.
There are two methods when building a trailer. One involves building the trailer from the running gear up. This means you can get away without having to flip the trailer during the building process. However if painting yourself, it is difficult to; 1) do a good preparation job and 2) paint the underside, if you cannot flip the trailer over. Remember, preparation is key to a long-lasting protective coating.
The other option is flipping the trailer over. For this you may need some form of lifting device (tractor, gantry, hoist, etc.), some good mates or a vehicle rotisserie.
What suspension type Will you use? How will you attach it?
This is largely up to you. It depends on your budget, what you will be hauling and the terrain in which your trailer will be used.
A commonly available and reliable option is leaf springs.
When you purchase your suspension, ask the supplier for instructions on how to install the product. You must choose suspension suitably rated for the trailer ATM. For heavy duty application, we recommend
upgrading to the next rating. For example, if you are building a 3500kg ATM trailer, you should use 4000kg rated suspension. You should also upgrade the rest of your running gear equally.
Here is an article covering suspension in more detail.
What sort of paint finish do i want?
One of the most important steps when building anything that will be subject to harsh environments and the elements, is a protective coating. There are a few options available. To help you decide, check out our trailer coating article.


