What Exactly Is It?
Two Ways to Get Two Incomes from One Property
Dual key and granny flat strategies both achieve the same goal — more rental income from a single purchase — but they work slightly differently. Here's the distinction.
Dual key and granny flat strategies both achieve the same goal — more rental income from a single purchase — but they work slightly differently. Here's the distinction.
A typical dual key property generates 30–60% more rental income than a comparable single-tenancy property at the same purchase price. That's a dramatic improvement in yield from the same capital outlay.
If one tenancy is vacant, the other still pays. Instead of zero income during vacancy, you're receiving 50% of your normal rent. Two income streams means two chances to keep money flowing every week.
You're paying stamp duty on one property — not two. You're managing one mortgage — not two. Yet you're collecting income comparable to owning two separate properties. The efficiency is remarkable.
Not just for investors. Dual key homes and granny flat properties are perfect for families who want to house elderly parents nearby, or adult children — with full privacy and independence for everyone.
Dual key and granny flat properties appreciate with the market just like any other property. You get the cashflow advantage without sacrificing land value appreciation. Best of both worlds.
Unlike a duplex build, dual key homes require no DA, no construction project management, and no 12-month build timeline. This is a buy-and-rent strategy, not a development project. Far simpler to execute.
Finding a genuine dual key opportunity isn't as simple as searching "granny flat" on realestate.com.au. Many listings don't advertise the second dwelling. Others have granny flats that aren't council-approved. We know what to look for — and what to avoid.
We verify approvals — Every secondary dwelling is checked for council approval status before we recommend it. You never buy a liability.
We assess true yield — We calculate actual market rent for both dwellings, not optimistic estimates. You know your real cashflow position before you buy.
We negotiate hard — Our independent status means we push for the best price. No conflicts. No split loyalties.
We identify build opportunities — If the property has land suitable for a new granny flat, we model the cost and income uplift so you can make a fully informed decision.
Instead of starting with a standard investment that is negatively geared, you start with a property that puts money in your pocket from week one.
Dual key homes are perfect for multigenerational families — elderly parents next door, adult kids with their own space, or both.
No DA. No construction project. No 12-month build. You buy an existing dual key home or granny flat property and start renting both immediately.
Banks assess both rental incomes when calculating your serviceability. A higher assessed rental income means greater borrowing capacity for your next purchase.
"iInvest found us a dual key home in Western Sydney that rents for $1,100 per week — $650 for the main house and $450 for the granny flat. We had no idea these properties even existed until they showed us the data. Life-changing cashflow."
"We bought a house in South East QLD with a council-approved granny flat already on site. Two tenants from day one. iInvest checked the approval status thoroughly — which was exactly what gave us the confidence to proceed. Excellent outcome."
"I wanted my mum to live nearby but didn't want to share a house. iInvest found a dual key home — Mum lives in the granny flat, I live in the main house, and when I eventually move out both dwell rents will cover my mortgage entirely."
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