Buying Property with Friends or Family: How to Protect Your Investment and Your Relationships

by | Oct 19, 2026

Buying a property with friends or family is a great way to break into the property market or secure an investment. Pooling resources can turn a solo financial hurdle into a shared milestone. However, as many unfortunate buyers discover when relationships turn sour, mixing business with personal ties can spell disaster if expectations aren’t aligned from day one.

While the excitement of buying together is high, the legal and financial realities can quickly become complex. Before jumping into a joint purchase, co-buyers need to have the hard conversations. Here are the crucial questions you need to answer before signing on the dotted line.

What are your contributions, initial and ongoing?

Equity isn’t always split 50/50 just because two names are on the title. Are you contributing equally to the deposit, stamp duty and legal fees?  What about ongoing mortgage repayments? If one person earns significantly more and contributes a higher share, how is ownership proportioned and how does that affect future returns?

What if someone loses their job?

Life is unpredictable. If a co-owner faces sudden unemployment, illness or a major life disruption, what is the backup plan? Will the other party cover the shortfall temporarily, and is there a strict timeline or mechanism for repayment?

How will outgoings be handled?

Beyond the mortgage, property ownership comes with council rates, insurance and maintenance. Who pays for routine upkeep? More importantly, what happens when a crisis hits like a fence blowing down in a storm? Having a dedicated joint account for ongoing expenses can prevent petty arguments and ensure bills are never missed.

Who will live in the property (and who else)?

Is the property going to be rented out as an investment or will one or both of you live in it? If someone lives there, are they paying market rent to the other owner? You also need to discuss boundaries regarding other occupants. What happens when a new romantic partner moves in? Does their presence change the financial dynamics or use of common spaces?

What happens when someone wants to sell?

Exit strategies are rarely discussed when buying, but they are the most critical part of the agreement. What happens if one person wants to cash out, relocate or needs to sell due to personal financial pressure? Is the other party given a first option to buy them out? What are the mechanics for determining the property’s value if a dispute arises?

The Golden Rule is to put It in writing. Relying on a handshake and mutual trust is a recipe for heartbreak. Memories fade, circumstances change and relationships can fracture over financial stress.

We prepare Co-Ownership Agreements all the time when people are buying a property together.  It might feel overly cautious when you’re excited about a new property but laying out every contingency in writing is the ultimate insurance policy, protecting not just your investment but the relationship itself.

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