Quick answer
Both a caveat loan and a second mortgage let you borrow against property equity without disturbing your existing bank mortgage. A caveat gives the lender notice of its interest on the title and restricts dealings, under the Land Transfer Act 2017; a second mortgage is a registered security. In New Zealand the caveat route can be quicker but is usually more expensive and shorter. If you can wait a few extra days, a second mortgage often costs less.
Key points
- Caveat: notice of a claimed interest on the title — quick, short, pricier.
- Second mortgage: a registered security behind your bank — still fast, usually cheaper.
- The deciding question is how much a few days' delay would cost you.
- Both need a clear, believable exit.
- Faster
- Caveat (usually)
- Cheaper
- Second mortgage (usually)
- Lender protection
- Stronger with a mortgage
- Best for
- Caveat: days-long bridges
The short verdict
Choose a caveat loan only when the deadline is genuinely days away, a registered second mortgage can’t be ready in time, and the repayment date is certain.
Choose a second mortgage whenever you can wait the extra few days. It usually costs less, gives you a bit more time to repay, and is the more conventional structure.
What’s the legal difference?
Land Information New Zealand describes a caveat against dealings, lodged under section 138 of the Land Transfer Act 2017, as notice that a person claims an interest in the land. It effectively restricts dealings with the property until the claim is resolved or the caveat lapses. A lender lodges one to protect its position quickly.
A second mortgage is a registered security that ranks behind the existing first mortgage. It gives the lender a stronger, more conventional set of rights over the property.
For you as the borrower, the practical differences are speed, cost and term.
How do they compare?
| Caveat loan | Second mortgage | |
|---|---|---|
| Lender’s protection | Notice on title; dealings restricted | Registered mortgage |
| Speed | Among the fastest property options | Fast, but registration and any consent take a little longer |
| First lender’s consent | Often not part of the process | May be needed |
| Relative cost | Higher | Lower |
| Typical term | Very short | Short to medium |
| Best for | A bridge of days or weeks | Needs of weeks to months |
| Selling or refinancing | Caveat must come off first | Mortgage must be discharged first |
How do you decide? Put a price on the delay
The choice comes down to one question: what would the extra days cost you?
- Find the real deadline. When does something bad actually happen — a settlement default, enforcement action, a lost contract?
- Ask how long a second mortgage would take for your property, including any bank consent.
- If the second mortgage can make the deadline, take it.
- If it can’t, estimate what missing the deadline would cost — penalties, lost deposit, lost contract — and compare that with the extra cost of the caveat loan.
Illustrative example. A New Plymouth transport operator receives notice that Inland Revenue is moving to a bank deduction over overdue PAYE and GST. Its bank’s consent to a second mortgage will take at least a week. A caveat loan over the owner’s investment property can be in place within days, stopping enforcement. Once the second mortgage is ready, it refinances the caveat loan at lower cost. Two steps, but the expensive step lasts days, not months.
Inland Revenue’s 2026 campaign on overdue GST and employer debt describes exactly this escalation: contact attempts, then visits, bank deductions and, in some cases, liquidation consideration. When enforcement is that close, a few days genuinely matter.
What are the risks specific to caveat loans?
- The exit is everything. With a very short term, a delayed sale or refinance can trigger extension fees or default charges quickly.
- Restricted dealings. You can’t sell or refinance cleanly until the caveat is withdrawn.
- Higher cost per day. Fees are concentrated into a short period.
- Clarity of terms. Make sure you know whether a mortgage will also be registered, and when the caveat will be removed after repayment.
What are the risks specific to second mortgages?
- Two lenders, two sets of repayments. Your bank loan continues alongside the new one.
- Consent delays. If your bank needs to consent, its timing is outside your control.
- Combined LVR limits. The amount is capped by the equity left after the first mortgage.
Can you use both in sequence?
Yes, and it’s a sensible pattern: a caveat loan to meet an immediate deadline, refinanced into a second mortgage (or a bank top-up) once there’s time. The key is agreeing the plan before the first loan is drawn, and checking early-repayment terms on the caveat loan so the refinance doesn’t trigger extra fees.
For the full detail on each, read caveat loans and second mortgage business loans. To see how much equity you have to work with, use the property borrowing calculator.
Deadline in days? Get a straight answer on timing from a specialist.
What if the deadline is a property settlement?
Settlement deadlines are one of the most common reasons owners consider a caveat loan. If bank finance for a commercial purchase is running late, a short-term bridge can protect the deposit and the deal. The same rule applies: if a registered second mortgage or first-mortgage bridge can be ready in time, it’s usually cheaper. Our page on property settlement deadlines walks through that situation in detail, including what to ask the vendor’s lawyer about extending.
What should you have ready for either?
- ID for every registered owner and borrower.
- Property address, ownership details and current mortgage balance.
- The deadline document — settlement notice, IRD letter, supplier demand.
- A specific exit: the sale, receivable or refinance that will repay the loan.
- Recent business bank statements if repayments will come from trading.
Choose the cheaper route that still makes the deadline
We’ll tell you honestly whether your deadline really needs a caveat or whether a second mortgage can get there in time. There’s no credit check to ask, and your details aren’t spread across a list of lenders — one person reviews the property, the deadline and the exit and calls you. Accurate details about the deadline and what’s owed on the property are what make that call useful. See your options.
Frequently asked questions
Why is a caveat loan faster than a second mortgage?
A caveat can be lodged quickly and doesn't always involve the same steps as registering a full mortgage, such as obtaining the first lender's consent. That can shave days off the process.
Why does a caveat loan usually cost more?
A caveat gives the lender weaker protection than a registered mortgage, so it carries more risk. Caveat loans are also usually very short, which concentrates the fees into a small window.
Can a caveat loan become a second mortgage later?
Sometimes. Some lenders lodge a caveat for speed and then register a mortgage. Ask upfront which you're agreeing to.
Which is better for paying an urgent tax bill?
If Inland Revenue enforcement is days away and a second mortgage can't be ready in time, a caveat loan can bridge the gap. If you have a week or so, a second mortgage is usually the cheaper choice.