
Yes, you can save thousands on your mortgage with flatmates or boarders. It also relieves the financial stress with the high cost of living in NZ today. Many homeowners are exploring shared living to maximise home savings. This is the ultimate guide to ensure mutually beneficial, harmonious and sustainable shared living arrangements.
Note – the actual savings are larger. If you pay principal and interest, your $750,000 gets less and therefore the interest you save is actually more than stated. We have just kept the example simple for illustration purposes.
However, the rental income above is only one of the ways you can save money on your mortgage payments. We list the additional cost savings as follows:

Remember to incorporate the tax / legal aspects of having flatmates / boarders.

Increased Income. The extra income can boost your overall financial profile. Banks consider your income when assessing your mortgage eligibility. With a higher income, you may qualify for more favourable terms.
Debt-to-Income Ratio Improvement. A key factor in mortgage approval is debt-to-income ratio. A lower ratio indicates that a smaller percentage of your income goes towards debt payments, which makes you a more attractive borrower.
Demonstrating Repayment Capacity. Lenders need assurance you can afford your mortgage. A steady rental income (from your flatmates), demonstrates your ability to generate additional funds. Therefore, you displaying you are a responsible borrower.
Potential for Joint Mortgages. If you buying a property with a flatmate, and both of you contribute to the mortgage, the possibility of a joint mortgage is opened. One of the advantages of this is shared responsibilities and potentially better terms.
Interest Rate Negotiation. With increased income and better financial standing, you may be in a better position to negotiation a lower interest rate.
Flexibile Repayment Options. Some mortgage structures may offer flexibiity in repayments. Explore mortgages that allow you to make additional payments during high earning months.
It is essential to discuss and explore mortgage structures with your mortgage broker. They are experts and will advise you the best structures for your situation.


In a shared living situation, you can help maintain a good social atmosphere. Make a home that is friendly and peaceful. People must talk to each other often and work to understand each other’s wants and needs. When everyone works together, living in a shared space, with friends or with a boarder, can be fun. In New Zealand, where group spirit is very strong, it is important to keep the atmosphere positive and long-lasting. Applying these tips will ensure you are able to continue enjoying saving money on your mortgage payments.
Moreover, creating and keeping a positive living environment in shared living spaces takes patience, and time. You can make New Zealand a better place to live by applying these tips in almost all circumstances. These practises not only make everyday life better, but they also add to the rich tapestry of shared living experiences.

Finally, considering flatmates to share your home can be a smart financial move that can help lower your mortgage payments. By working together, homeowners can lower their individual financial burdens. It will also save homeowners a lot of money over the life of their debt. This choise not only makes money worries less stressful, but it also builds community and a feeling of shared responsibility. Housing costs and cost of living is through the roof in NZ at the moment. Therefore, new ideas, like living with flatmates can help you save money right away. It also gives you the chance to make lasting connections. This changes how we think about property in today’s constantly changing economic climate.

Remember to connect with your mortgage broker to ensure you have the optimal mortgage structures in place, so you derive maximum benefit though your shared living arrangement!
Angela is an accredited Financial Adviser, licensed under FSP742251 and has been in the Financial Industry since 2006. Our 5-star Google reviews reflect the excellent customer experience we promise — making your home loan journey positive, stress-free, and rewarding. At Platinum Mortgages, our clients are the reason we exist — so you can be confident every step is guided by genuine care and expertise.