For trailers & semi-trailers

Trailers and semi-trailer parts in Australia: prices and rules

Updated 4 November 2026

A new trailer in Australia usually costs between A$3,300 and A$20,000, depending on size and type, and flat-top tandem trailers mostly sell for A$7,400 to A$11,500. Parts such as LED lights start from about A$17. These are approximate prices from sellers' websites in November 2026. To get current prices and offers from local builders and parts suppliers for your exact trailer, send a request on BlaBlaPrice.

Registration and inspection rules

Registration and inspection rules differ between states. One guide says trailers under 750 kg GVM need a basic inspection, while trailers over 750 kg need a roadworthy inspection and a weighbridge certificate. The Heavy Vehicle National Law describes three main types of heavy trailer: dog trailers, pig trailers and semitrailers. Ask the seller whether the trailer comes with the paperwork your state requires.

Lights and parts: what to check

Trailer lights come in 12 V and 24 V versions, and some are rated for wider ranges such as 9 to 33 V or 10 to 30 V, so check the voltage on the lamp before you order. Tell the seller which light you need: stop, tail or indicator, and whether it is round or square. For axle and suspension parts, the part number and the axle rating in kg are the fastest way to get the right item.

Season and warranty

November is the start of the summer season, and trailers are busiest from December to February, when summer holiday trips are common. Ask how a heavy trailer will be delivered to your city, since it may need a truck. Some builders list a two-year structural warranty, and Australian Consumer Law guarantees apply on top of it. Warranties cannot take away a consumer's basic rights.

What to write in your request

Name the part or trailer type, the make, the model and the year, and the part number if you have it. Say whether you want an original or a compatible part, and whether it should be new, used or reconditioned. Give the city where it should be delivered, your budget in A$, and the load rating you need, such as GVM in kg.

On BlaBlaPrice you describe what you need in your own words in a chat, and you can add a photo. It is free for buyers. BlaBlaPrice's AI reads the request, asks for missing details and looks through sellers' websites and price lists in Australia, then shows the prices and businesses it found. Sellers registered on BlaBlaPrice reply in the chat with their own offer, and your contact details stay hidden until you choose whom to contact. You can create a request on the home page, read how BlaBlaPrice works, or browse commercial vehicle and machinery parts.