According to realestate.com.au, landlords facing higher borrowing costs from Reserve Bank rate hikes are passing those costs straight through to tenants in the form of rent increases, and with vacancy rates "incredibly tight," they can do so without risking extended vacancy periods.
The Rent-Rate Feedback Loop Explained
The realestate.com.au analysis lays out a mechanism that matters directly to anyone holding an investment property loan today: when the RBA lifts rates, landlords carrying mortgages on rental properties face higher repayments, and because housing-related costs make up nearly a quarter of the consumer price index weighting, rent rises that follow show up in the next inflation print. That, in turn, can prompt further rate action. The source notes construction costs and rents are captured in the CPI even though housing prices themselves are not measured directly in that index. Each basis point increase in rates adds real monthly cost to landlords already managing properties through a correction.
Related reading: REAStats property market data.
Landlords are paying materially more in interest than they were when the cash rate sat at lower levels. Those repayment increases do not stay confined to the mortgage ledger. They show up in landlords deferring maintenance, delaying building upgrades, or in some cases cutting back on optional cover such as landlord insurance add-ons to manage cash flow pressure.
For investors, the practical implication is straightforward: a rental property is only as resilient as the insurance sitting underneath it. If rate pressure is squeezing a landlord's monthly budget to the point where rent increases are the only lever being pulled, insurance premiums — which have also risen sharply with construction cost inflation — become an easy target for corner-cutting. That is precisely where coverage gaps open up, often not discovered until a claim is lodged and found wanting.
Why This Changes the Calculus for Landlord Insurance
The realestate.com.au piece frames the RBA's rate tool as blunt and arguably ineffective, noting mortgage holders make up roughly a third of the adult population while outright owners — who benefit from higher term deposit returns — make up a similar share, effectively offsetting each other's spending behaviour. For landlords specifically, though, there is no offsetting benefit. A landlord with an investment mortgage faces higher repayments with no corresponding uplift in a savings account, unless they also hold separate cash reserves.
When cash flow is tight, landlords may be drawn to using rent increases to cover borrowing costs whilst cutting back on insurance budgets, a dynamic that leaves underinsurance risk concentrated in precisely the areas where tenant turnover and claims exposure are highest. This is a forward-looking risk worth flagging for any landlord currently renewing a policy.
When cash flow is tight, it is tempting to downgrade landlord insurance to a basic building-only policy and drop contents, loss-of-rent, or legal liability extensions. But those are exactly the components most likely to matter if a tenant defaults, a property sits vacant between tenancies, or storm and fire risk — both prevalent across the eastern seaboard — damages a property mid-tenancy. Insurers price landlord policies partly on rebuild cost, and if construction costs have risen whilst a sum-insured figure has not been updated, a landlord may already be underinsured without realising it.
Background: Off-the-Plan Exposure and Insurance Timing
Investors who purchased off the plan face a particular version of this squeeze. Our guide on Off the Plan Property — Risks and Benefits covers how construction delays and market shifts between contract and settlement can leave buyers facing a very different financing and insurance landscape than they planned for.
For investors weighing whether to hold a settling off-the-plan property in this climate, the insurance question deserves as much attention as the mortgage question. A newly completed building needs a landlord policy in place from day one of tenancy, priced against current — not contract-era — rebuild costs.
What Landlords and Tenants Should Do Now
For landlords, the practical takeaway from this rate cycle is to review sum-insured figures annually rather than letting a policy auto-renew unchanged. Construction cost inflation has moved materially since many existing policies were first written, and a rebuild cost calculated two or three years ago is unlikely to reflect what it would actually cost to reconstruct a property today. Landlords should also confirm their policy includes loss-of-rent cover, given how tightly vacancy periods are running — the source notes vacancy rates remain "incredibly tight," which cuts both ways: it supports rent growth, but a vacancy gap caused by fire or flood damage still needs income replacement cover to bridge it.
For tenants facing rent increases tied to a landlord's rising mortgage costs, understanding the mechanism described above does not change the bill, but it does explain why increases are arriving even as headline property prices soften in some markets. Tenants should check their own contents insurance separately, since a landlord's building policy does not cover a tenant's possessions.
The bottom line for anyone holding an investment property through this rate cycle is that cash flow pressure and insurance adequacy are now linked in ways they weren't during the low-rate years. Landlords who treat insurance as a line item to trim when budgets tighten are taking on risk at exactly the moment — rate hikes, tight vacancy, rising construction costs — when a claim is most likely to matter.
Further reading
This article was produced with AI assistance and reviewed for accuracy. Content is for informational purposes only and does not constitute financial or property investment advice.
