Trailer Insurance: Does Your Home or Car Policy Already Cover It?

August 24, 2026 3 Min Read

Your trailer sits in the driveway. You assume it’s covered. Often, it isn’t. Here’s what trailer insurance actually covers, why your home policy probably excludes it, and what it costs for a box trailer versus a caravan.

Quick Answer: Trailer Insurance

Trailer insurance covers your trailer against theft, fire, and accidental damage. It’s not compulsory in Australia. Your car’s CTP insurance covers injury claims while the trailer is attached and towed. It doesn’t cover damage to the trailer itself. Most home insurance policies exclude registered trailers and caravans too. Insurers treat them as vehicles, not contents. That leaves a real gap once the trailer is parked or detached. A camper trailer typically costs $250 to $500 a year to insure. A basic box trailer usually costs less again, since it’s worth far less.

Does Home Insurance Cover a Trailer in the Driveway?

Usually not, and this catches people out. Most home and contents policies define trailers and caravans as vehicles, not contents, and specifically exclude them.
This holds even if the trailer never leaves your driveway. Sitting on your own property doesn’t change how the policy classifies it.
Check your own PDS to be sure. Wording varies between insurers, so don’t assume based on what a friend’s policy says.
CTP doesn’t fill this gap either. It covers injury liability while the trailer is attached, not damage to the trailer.

What Trailer Insurance Actually Covers

Third party property damage. This covers damage your trailer causes to someone else’s car or property. It’s the most basic level.
Third party, fire and theft. This adds cover if your trailer is stolen or destroyed by fire, on top of the third party liability.
Comprehensive cover. This is the broadest level. It adds accidental damage, storm damage, and vandalism to your own trailer.
The gap once it’s detached. At a campsite or job site, a trailer off the tow vehicle has no CTP cover at all. Only a standalone policy protects it there.

What It Actually Costs

A camper trailer typically runs $250 to $500 a year. This is a comprehensive policy figure, and it depends on the trailer’s value and where you live.
A mid-range caravan usually costs $500 to $1,200 a year. The higher value pushes the premium up compared to a basic camper trailer.
A luxury caravan can run $1,000 to $5,000 or more a year. Fit-out value and replacement cost both drive this range higher.
A basic box trailer costs less than all of these. Insurers price it against its resale value, which sits well below a camper trailer’s.

Deciding If You Need Separate Cover

Work out what your trailer is actually worth. A cheap, old box trailer might not justify a standalone policy at all.
Check if it’s ever left unattended somewhere public. A trailer parked at a job site or worksite carries more theft risk than one locked in your garage.
Confirm your home policy’s exact wording first. Don’t assume cover exists just because the trailer sits on your own property.
Weigh the annual premium against a full replacement cost. For a valuable camper trailer or caravan, a few hundred dollars a year is often worth it.

FAQ: Trailer Insurance

Does my home insurance cover a trailer parked at my house?
Usually not. Most home and contents policies exclude registered trailers and caravans, treating them as vehicles rather than contents. Always check your own PDS.

Does CTP cover my trailer while it’s attached to my car?
CTP covers injury liability while the trailer is towed, but it doesn’t cover damage to the trailer itself. That needs separate trailer insurance.

What does trailer insurance cost in Australia?
A camper trailer typically costs $250 to $500 a year. A mid-range caravan runs $500 to $1,200. A basic box trailer usually costs less than either.

Is trailer insurance compulsory in Australia?
No. It’s optional in every state, though many owners still buy it given the coverage gap in home and CTP policies.

What’s the difference between third party and comprehensive trailer cover?
Third party only covers damage you cause to someone else’s property. Comprehensive adds cover for accidental damage, fire, theft, and storm damage to your own trailer.