Quick answer
A second mortgage is registered on title behind the first mortgage; a caveat loan is secured by lodging a caveat that warns of the lender's interest instead of registering a mortgage. Caveat loans can be marginally quicker for very small, very short needs, but the security is weaker and they generally suit short terms. A registered second mortgage is stronger security, usually suits longer terms and larger amounts, and is often only slightly slower.
Key points
- A caveat is a warning on title; a second mortgage is registered security.
- Caveat loans can be marginally faster for small, very short needs.
- Second mortgages suit longer terms and larger amounts.
- Some owners use a caveat first, then replace it with a registered second mortgage.
- Caveat loan
- Very short term
- Second mortgage
- Short to medium term
- Stronger security
- Second mortgage
- Both
- Business purposes only
What’s the difference in plain terms?
Both loans rely on your property’s equity. The difference is in how the lender protects itself on the title.
- Second mortgage: the lender registers a mortgage on your title. It has a recognised, ranked interest in the property, sitting behind the first mortgage.
- Caveat loan: the lender lodges a caveat, a formal warning on the title that it claims an interest. That generally stops other dealings being registered without the caveator being notified, but it isn’t a registered mortgage.
Titles Queensland describes caveats as a way to preserve the status quo on a title while an interest is resolved, and notes that registering a caveat doesn’t itself prove the interest claimed exists; that’s for the courts. That’s precisely why lenders treat a caveat as a lighter form of security.
How do they compare?
| Second mortgage | Caveat loan | |
|---|---|---|
| Security | Registered mortgage, ranked behind the first | Caveat on title |
| Strength of security | Stronger | Weaker |
| Typical term | Short to medium | Very short |
| Typical amount | Wider range, including larger loans | Often smaller |
| Speed | Fast; same day possible for $20k–$250k | Can be marginally faster |
| First-lender consent | May be needed | Often less involved, but loan terms still matter |
| Pricing | Reflects second ranking | Usually reflects the weaker security and short term |
| Lodgment | National Mortgage Form, usually electronic | Caveat form, usually electronic |
When does a caveat loan make sense?
- Tiny window, small amount. A very short-term need where every hour counts.
- Consent will take longer than the deadline. A caveat can bridge until first-lender consent arrives and a second mortgage can be registered.
- Clear, near-term exit. A settlement, refund or payment due within weeks.
When does a second mortgage make more sense?
- Anything beyond a very short term. The stronger security usually makes longer terms more comfortable for lenders.
- Larger amounts. Up to $5,000,000 is possible within 24 to 48 hours on property security.
- An exit that might slip. More room to extend if needed.
- Lower total cost over the term, in many cases, because the security is stronger.
Our page on urgent second mortgage finance shows how close to caveat speed a well-prepared second mortgage can get.
Racing a deadline and unsure which to use? Tell us the date and a specialist will tell you which structure fits.
Can you start with a caveat and switch to a second mortgage?
Yes, and it’s a sensible pattern when timing and consent collide. The lender advances funds on a caveat to meet the immediate deadline. Once first mortgagee consent arrives and documents are signed, a registered second mortgage replaces the caveat. You get speed now and stronger, often better-priced security for the remaining term.
How do caveats and mortgages rank against each other?
Generally, registered interests rank by order of registration, and a caveat protects a claimed interest by preventing later dealings from being registered without notice. How priority plays out between a caveat and later registrations can involve technical rules. That’s one more reason lenders prefer registered security for anything beyond a short term. See priority and registration for the basics.
Illustrative example: one week, then six months
A civil contractor needs $120,000 in two days to pay a subcontractor and keep a site running. The first lender’s consent will take about a week. A caveat loan funds the payment immediately; a week later, with consent received, a registered second mortgage for a six-month term replaces it, repaid from a progress claim. The figures are illustrative.
What does each cost, in broad terms?
We don’t publish rates for either, because both are priced on the individual file. What we can say is how the cost drivers differ. Caveat loans tend to carry costs that make sense only over short periods: the lender is taking weaker security for a brief window, and fees are often a larger share of the total. A registered second mortgage spreads its establishment costs over a longer term and, because the security is stronger, is often more comfortable for a lender to price across several months.
So the comparison that matters is total dollars over the period you’ll actually need the money. For a two-week gap, a caveat can come out ahead. For a six-month need, the second mortgage usually does. Our page on second mortgage costs lists the fees to ask about for either.
What happens to the caveat when the loan is repaid?
When a caveat loan is repaid, the lender lodges a withdrawal of the caveat and the title is clear again. Queensland lists caveat withdrawals among the instruments lodged electronically. A second mortgage is removed the same way with a registered discharge. Either way, ask for the withdrawal or discharge to be lodged promptly, because a leftover notation can hold up a later sale or refinance.
What should drive your choice?
Three questions settle most files:
- How long do you need the money? Weeks favour a caveat; months favour a second mortgage.
- How much? Larger amounts favour a registered mortgage.
- What’s the exit, and how certain is its date? Firm and near favours a caveat; less certain favours a second mortgage with room to breathe.
Our LVR calculator’s pathway comparison asks these questions and highlights the best fit.
Not sure which? One call settles it
Picking between a caveat and a second mortgage is a technical call, and it’s the kind we make every day. Enquiring takes about 60 seconds, and there’s no credit check when you first enquire.
We don’t farm your enquiry out to multiple lenders. A single specialist looks at your timeline, amount and exit, and calls you with a recommendation. Please give your deadline and exit date accurately; they decide which structure fits far more than anything else.
Frequently asked questions
Is a caveat loan the same as a second mortgage?
No. A caveat loan is secured by a caveat, a notice on title claiming an interest. A second mortgage is a registered mortgage. The registered mortgage gives the lender a stronger, clearer position.
Which is faster?
A caveat loan can be marginally faster because a caveat is simpler to lodge. With electronic lodgment, a registered second mortgage is often only slightly slower.
Can a caveat be replaced with a second mortgage later?
Yes. Some files start with a caveat to meet an urgent deadline, then convert to a registered second mortgage once first-lender consent or documents are in place.
How long does a caveat last?
It depends on the state and the circumstances. Titles Queensland notes that in most cases a caveat's duration ranges from 14 days to three months, unless action by the caveator extends it.