The short answer
A second mortgage is a loan secured against property that already has a first mortgage. It is registered on the record of title behind the first lender, so the bank's loan stays untouched. Business owners use one to unlock equity quickly, often without financial records, and repay it from a sale, refinance or trading income.
How does a second mortgage work?
A second mortgage is a loan secured against a property that already has a mortgage on it. The new lender registers its mortgage on the property’s record of title through Land Information New Zealand (LINZ), and it ranks behind the existing first mortgage.
Ranking is the whole idea. If the property were ever sold to repay debts, the first lender is paid out in full first, then the second lender from what is left. Because the second lender sits further back in the queue, it looks hard at how much equity is left after the first mortgage, and at how you plan to repay.
What does not change is just as important:
- your bank loan stays where it is
- your bank rate, fixed term and repayments are untouched
- the bank remains the first-ranking lender
You end up with two separate loans on the same property, each with its own repayments and its own end date. Most business second mortgages are short to medium term, designed to solve a specific problem and then be repaid.
How much equity can you use?
Your usable equity is the property’s current value minus the balance of your first mortgage. Lenders then cap the total borrowing across both mortgages at a share of the value, which varies with the property type, location and condition.
An illustrative example: a home in Tauranga is valued at $950,000 with $420,000 owing to the bank. That leaves $530,000 of equity on paper, but no lender will lend right up to the full value. The amount you can actually raise is the gap between the bank balance and the lender’s maximum combined figure.
Our equity calculator gives you a quick estimate. Through LoansOne, 1st and 2nd mortgages for business purposes run from $20,000 to $500,000, and the property can be your home, an investment property or commercial premises.

Can a company borrow against a director’s home?
Yes, and it is one of the most common set-ups. The loan is made to the company or the business, and the owners of the property give the lender a mortgage over it as security. If the house is in the directors’ own names, they sign the mortgage personally and usually a guarantee as well.
If the property is owned by a family trust, it can still be used, but every trustee has to agree and sign, and their lawyer will want to be satisfied that the trust deed allows it. Allow a little extra time for that. Our page on borrowing against your house for business covers the home-equity side in more detail.
Does your bank need to agree to a second mortgage?
Often, yes, but it is usually a process, not a battle. Many first mortgage documents say the borrower must get the bank’s consent, or at least give notice, before another mortgage is registered. Your lawyer checks the wording, writes to the bank and sorts out the details. Some banks also confirm the maximum amount their first mortgage secures, so the second lender knows exactly where it stands.
You do not need to ask the bank for more money, explain your business plan to them or wait for their credit team. That is a big part of why second mortgages are faster than going back to the bank.
Why is a second mortgage a lifesaver for small businesses?
Plenty of Kiwi business owners have serious equity in property but a bank that will not, or cannot, move quickly. A second mortgage gets that equity working without unpicking everything else.
It leaves a good bank deal alone. If your first mortgage is fixed, breaking it to refinance can bring break costs and weeks of paperwork. A second mortgage sits alongside it.
It is fast. No full refinance, no bank credit committee. The work is a property check, lawyers and registration.
No financial records needed. For 1st and 2nd mortgages arranged through LoansOne, no cash flow or financial records are required. If your accounts are a year behind, that does not stop you.
Bad credit is OK. Past defaults or arrears do not rule you out, because the property carries the risk.
It buys time. A second mortgage can clear the urgent problem now while you sell an asset, collect a big debt or tidy your accounts for a cheaper long-term refinance later.
Here is how it compares with refinancing the whole bank loan:
| Refinance your first mortgage | Add a second mortgage | |
|---|---|---|
| Your existing bank loan | Paid out and replaced | Stays exactly as it is |
| Break costs on a fixed rate | Possible | Avoided |
| Paperwork | Full application and financials | Lighter, no financial records needed |
| Speed | Often weeks | Often days |
| Credit history | Closely assessed | Bad credit OK |
| Best for | Long-term restructure | Fast, specific business needs |
What does a second mortgage cost?
Second mortgages cost more than a bank first mortgage, because the lender ranks behind the bank and takes more risk. What sets the price for your loan:
- how much equity is left after the first mortgage
- the property type and location
- the loan term and amount
- your exit plan and how believable it is
- your credit history and the purpose of the loan
There are usually establishment costs and legal fees too. Every loan is priced on your individual circumstances, and LoansOne works to get the sharpest rate available for your situation. The fair comparison is not “second mortgage vs bank rate”. It is the cost of the second mortgage against the cost of not acting: IRD penalties still building, a lost contract or a supplier stopping your account.
How does the second mortgage process work, step by step?
- Enquiry. You apply in about 30 seconds online. Starting the enquiry does not mark your credit file.
- Expert review. A LoansOne specialist reviews the property, the amount, the purpose and the exit plan.
- Lender match. You are matched to a lender suited to your property and situation, not sprayed around a dozen of them.
- Property check. The lender confirms the value, sometimes with a desktop assessment and sometimes a full valuation.
- Offer and lawyers. You receive loan documents and your lawyer explains them, deals with the bank consent and certifies your signing.
- Registration and funding. The mortgage is registered on the title and funds are paid out.
Next-day funding is possible, and many loans fund in as little as 24 hours once documents are in.
When does a second mortgage make sense for a business?
- Clearing IRD debt before penalties and interest pile up. See IRD debt loans.
- Funding a contract that needs materials and wages upfront.
- Buying stock at a discount or ahead of a peak season.
- Bridging a timing gap while a property sale settles or a large debtor pays.
- Replacing a pulled overdraft when the bank tightens limits.
- Consolidating expensive short-term debts into one repayment.

Example: a Tauranga builder caught between retentions and IRD
Picture a residential builder in Tauranga. Business is busy, but money is stuck in retentions and slow final payments, and GST arrears of around $90,000 have built up. The family home has a bank mortgage fixed for another two years at a good rate, and the business accounts for last year are not finished.
Going back to the bank would mean finalised accounts, a full application and possibly breaking the fixed rate. Instead, a second mortgage behind the bank clears the GST in full, so penalties stop. The plan is to repay it from retentions being released over the next year. This is an illustrative scenario, but it shows why second mortgages earn their “lifesaver” reputation.
What are the risks of a second mortgage?
Be clear-eyed. A second mortgage is secured on property, so if repayments fail and there is no other way to repay, the lender can enforce its security. That is why the exit plan matters most. Before you sign, be able to say in one sentence how the loan will be cleared: a sale, a refinance, specific debts being collected or trading surplus.
Keep the term matched to the plan and do not borrow more than the job needs.
Second mortgage or something else?
A second mortgage is not the only property-backed option. A caveat loan can sometimes be faster but works differently on title, compared in caveat loan vs second mortgage. If you want to replace the bank entirely, read first vs second mortgage. For the product itself, see our second mortgage for business page.
Next step
If you have equity in property and a business problem that needs solving fast, a second mortgage may be the cleanest fix. Applying is free, takes about 30 seconds to start and does not mark your credit file. An expert reviews your situation and matches you to the right lender. Want to talk it through first? Call 09-888 5252.



