Does my partner have to sign if I borrow against our home for my business?

It’s usually asked at the kitchen bench, not in a lender’s office: “The house is in my name. Do I really need to get my partner to sign?” Mr hears it every month. The honest answer has two layers, who legally grants the mortgage and who a lender wants to hear from before it lends. They aren’t always the same person.

Who has to sign a mortgage over the family home?

The people on the record of title grant the mortgage. That gives you three common set-ups:

Whose name is on the title	Who signs the mortgage	What the lender usually asks as well
Both partners (joint owners)	Both	Both to understand the loan and the risk to the home; often separate legal advice
You alone	You	Your partner’s written consent and certificate of independent legal advice
A family trust	The trustees	Trust deed, and trustee decisions recorded; see family trust property

So if your partner is on the title, there’s no debate: they sign. The grey zone is the middle row, which is exactly where most owners land.

Mr says: “It’s only in my name” is a fact about the title. It isn’t a fact about the lender’s risk.

Why would a lender want my partner’s consent if they aren’t on the title?

Because of the Property (Relationships) Act 1976. It covers married couples, civil union partners and de facto partners, and the Ministry of Justice sets out how the court deals with relationship property when a relationship ends. The family home is generally treated as relationship property, which means a partner may have a claim to a share even when only one name appears on the title.

A lender taking a mortgage over the home wants to know that no one with a possible interest will later say, “I never agreed to this.” That’s why consent and independent legal advice are standard conditions, not signs of distrust. It protects your partner as well as the lender.

Mr’s plain view: the more the home is at risk, the more reasonable the question. Borrowing for the business on a secured basis, with the house as the security, puts the family home on the line. Your partner is entitled to understand that.

What is a notice of claim, and what does it do to a new mortgage?

This is the one that catches people out. Under section 42 of the Act, a partner can lodge a notice of claim against a title. LINZ describes it as stating that the person claims an interest in the property “because of their relationship with the legal or beneficial owner”.

What LINZ says it does:

• It prevents other instruments, such as a transfer or a mortgage, from being registered against the record of title until it’s removed, unless the notice permits them or the claimant consents.
• It doesn’t change ownership, and it doesn’t give the claimant a registered interest in the land.
• It stays until the claimant withdraws it, it lapses through a statutory process, or a court removes it.

Practically: if a notice of claim sits on your title, a new business mortgage generally can’t be registered until it’s dealt with. A lender will find it when it checks the title, so there’s no point hoping it won’t show. Our page on what lenders check on a property lists the other title items worth looking at before you apply.

If you don’t know whether one’s there, order a current copy of your record of title. It takes minutes, and it’s better to learn it yourself than from a valuer.

What does “independent legal advice” actually mean?

It means your partner talks to their own lawyer, not the lawyer who’s acting for you or the lender, about what they’re agreeing to. The lawyer explains the effect of the document and its risks, then confirms in writing that they have done so.

The Ministry of Justice uses the same standard for agreements between couples about property: “your agreement must be in writing and both of you must have had independent legal advice” before the court can enforce it. Lenders borrow that thinking. A consent that wasn’t properly explained is a weak consent.

Budget a little time and a lawyer’s fee for this. It’s rarely the slow part of a loan unless it’s left to the last day.

What if my partner won’t agree?

Then the answer, for now, is that the family home isn’t available as security. Mr would never tell you to push it. A loan signed under pressure is the sort that comes back to bite, for the relationship and sometimes for the lender’s position too.

What owners do instead:

1. Use other property held in their own name, such as a rental or commercial premises, which doesn’t raise the same family-home question.
2. Use a different lender structure, such as a smaller second mortgage if the equity and the partner’s comfort level both stretch that far. See second mortgages for business.
3. Look at unsecured cash-flow lending if the business trades well. It’s typically $5,000 to $500,000, sized on turnover and bank statements, with no house involved. Our guide to business loans without property explains how that works.
4. Wait and prepare. Sometimes “no” means “not like this”. A clear plan, a smaller amount or a shorter term may change the answer.

Thinking through whether the borrowing makes sense? Have a quick look at your options here. There’s no credit check when you first enquire.

How should I raise it with my partner?

Do it before you talk to any lender. These are the points that usually matter:

• The number and the purpose. How much, what for, and what it returns.
• The worst case. What happens to the home if the business can’t repay, and how long you could cope.
• The repayment plan. Where the money to repay comes from, in terms they can check.
• Their independent advice. Offer to pay for it, and mean it.
• A way out. What you’d sell or change first if things went sideways.

Owners who treat it as a joint business decision tend to find the signing is a formality. Owners who spring it on a partner at the lawyer’s office often find it isn’t.

Illustrative example: the plumber, the house and the notice

This example is invented to show how the process works. It isn’t a real client.

A plumber in Tauranga owns his house in his own name. He wants a $150k business loan to buy two vans and take on staff. His partner has no say on the title, and he assumes that’s the end of it.

Before applying, he orders his record of title and finds a notice of claim from an earlier, separate dispute that was never withdrawn. That could have stalled any mortgage.

What he does:

• Talks to his partner first, with a one-page plan showing the numbers and the worst case.
• Gets the notice sorted through his lawyer, so the title is clean.
• Arranges separate legal advice for his partner, who then signs a consent.
• Applies with everything ready, instead of finding it out at the valuation stage.

The security was always fine. What mattered was that the people affected were told first.

Should I check anything else before borrowing against the house?

A few quick ones that sit alongside the partner question:

• Is the title in the right names, or is a trust involved?
• Is there existing lending on the home, and what’s your equity? How much equity do I need? walks through the maths.
• Would a personal guarantee apply as well? See personal guarantees.
• Does the business case hold up? The funding readiness check gives you a view in a couple of minutes.

The broader question of using your home for the business is covered in can I borrow against my house for my business?

Ask Mr about borrowing against your home

If you’ve been putting off the conversation with your partner, you’re in good company. It’s the part of secured lending that nobody enjoys, and the part that matters most. Once it’s out in the open, the paperwork gets simpler.

When you ask us, it takes about a minute and nothing touches your credit file at that stage, so you can ask without it costing you anything. We don’t send your details to a pile of lenders, so your phone stays quiet. A real person reads what you’ve said, looks at your property, your partner situation and your business together, and rings you to talk it through, including a straight “not yet, here’s what to fix” if that’s the honest answer.

One favour: please fill the form in accurately. Tell us whose names are on the title, roughly what’s owing on the home, and whether your partner knows about the plan. The more accurate the picture, the better the first option we put in front of you.

See if you qualify →