Buying with Family: A Practical Guide to Co-Ownership

For many New Zealanders, buying a home with a family member has become a practical path into a competitive property market. Whether it is a parent helping a child get started, or siblings pooling resources, co-ownership can bring deposit contributions and borrowing power together in ways that individual buyers cannot always manage alone. At Chaperone, we see a growing number of families exploring this approach, and while it can work well, it is worth understanding the structure before signing anything.

How Co-Ownership Works

When two or more people purchase a property together, they are both named on the title and both responsible for the mortgage. In New Zealand, co-owners typically hold property either as joint tenants or tenants in common. Joint tenancy means each owner holds an equal share, and if one owner dies their share passes automatically to the surviving owner. Tenants in common allows each party to hold a defined share, which can be unequal, and each person can leave their share to whoever they choose in their will. The right structure depends on the relationship between co-owners and what each party wants from the arrangement.

Getting the Legal Structure Right

A property sharing agreement is one of the most important documents in any co-ownership arrangement. This is a legal contract that sets out how costs will be shared, what happens if one party wants to sell, how decisions about the property are made, and what occurs if one owner can no longer meet their share of the mortgage. Without this agreement, disputes between co-owners can become complicated and expensive to resolve. A solicitor experienced in property law can help draft an agreement that reflects the specific arrangement you have in mind.

Mortgage Considerations

From a lender's perspective, all co-borrowers are jointly and severally liable for the full mortgage. This means if one party stops paying, the other is responsible for the entire loan, not just their share. Lenders will assess the income, expenses, and credit history of all borrowers when determining how much they are willing to lend. It is also worth knowing that if one co-owner already has a mortgage on another property, this will be factored into the overall serviceability assessment. A mortgage adviser can help you understand how a co-ownership arrangement might affect your borrowing capacity.

KiwiSaver and First Home Schemes

If any co-owner is a first home buyer, they may still be eligible to use their KiwiSaver savings toward the deposit, provided they meet the relevant criteria. The First Home Loan scheme, which allows eligible buyers to purchase with as little as a five percent deposit, can also apply in co-ownership scenarios in some circumstances. It is worth checking with a mortgage adviser or Housing New Zealand about eligibility, as conditions apply and not every lender participates in every scheme.

What Happens When Circumstances Change

One of the most common challenges in co-ownership arises when one party's life circumstances change. A co-owner may want to sell, experience financial difficulty, enter a new relationship, or simply want to move on. Without a clear agreement in place, these situations can create significant tension. Many families find it useful to agree upfront on a process for buying out a co-owner's share, including how the property will be valued at that point. Having this documented early prevents misunderstandings later when emotions may run higher.

Taking the Next Step

Co-ownership can be a genuinely useful way to get into property, and many families navigate it successfully. The key is preparation: understanding the legal structure, getting advice from a solicitor, and being honest with each other about expectations from the start. At Chaperone, we can connect you with mortgage advisers who have experience with co-ownership applications and can help you think through the financial side of the arrangement. Entering into property with family is a significant decision, and taking the time to structure it properly from the beginning can make all the difference.