Upsizing From a Unit to a House in Logan, QLD, Your Practical Guide
You've outgrown your unit. Maybe the family has grown, the home office has taken over the spare room, or you've simply hit the ceiling on what a unit can offer. Whatever the trigger, upsizing from a unit to a house in Logan, QLD is one of the most common moves buyers make here, and it's one where the order of events matters as much as the loan itself.
The equity you've built in your unit is likely doing more work than you realise. Logan's unit market has moved sharply over the past 12 months, and for many owners that means the gap between what they owe and what they own has grown considerably. That gap is your most powerful tool for the next purchase, and how a lender reads it varies significantly.
Our team works with upsizers across Logan, QLD every week, comparing options across 60+ lenders. The upsizing home loan side of it is where most of the difference is made, and it starts with understanding exactly what your current unit is worth to a lender.
Key takeaways
- Equity in your Logan unit can fund the deposit on your next house.
- Lenders assess end debt, not peak debt, when bridging finance is involved.
- Selling first avoids bridging but limits your negotiating position on the buy.
Can you upsize from a unit to a house in Logan, QLD without selling first?
Yes, you can buy your next home before your unit sells, and it's more common than most upsizers expect. The mechanism is bridging finance, a short-term loan that covers the gap between your new purchase and the sale of your current property. Most lenders assess the loan on your end debt, which is the balance remaining once the unit's sale proceeds clear, not on the larger combined figure during the bridge itself. That distinction is what makes the numbers work for many Logan upsizers.
How do lenders assess your equity when you're upsizing in Logan?
Your usable equity is the difference between your unit's current market value and 80% of that value, minus what you still owe. A lender will commission their own valuation, which may differ from what you've seen on real estate apps. Logan's unit market has seen strong recent growth in many suburbs, so it's worth getting a current figure before you plan around an older estimate.
The equity assessment also changes depending on whether you're keeping the unit or selling it. If you're selling, lenders factor the expected net proceeds into the loan structure directly. If you're considering keeping the unit as an investment, lenders treat the mortgage on it as an ongoing commitment, and your borrowing capacity for the house purchase is assessed against both loans running simultaneously.
The most common thing I see is upsizers who've worked out their equity on paper but haven't factored in what the lender's valuation will do to it. A conservative bank valuation and the 80% LVR calculation together can take a number that looked comfortable and make it tighter. Getting a realistic figure early changes the whole plan.
Nevada Matthews · Mortgage Broker and Co-Owner, Cube Loans · Chat to Nevada →
What does it actually cost to upsize from a unit to a house in Logan?
The costs stack up across three categories: the purchase itself, the selling costs on the unit, and the loan transition. On the purchase side, stamp duty on an established house depends on the price and whether any first-home concession still applies to you. As an existing owner upsizing, you're generally paying full transfer duty, which on an $880,000 home in Browns Plains, for example, is a material cost. Use the Queensland Revenue Office's online calculator for your exact figure rather than estimating it.
Selling costs typically include agent commissions, marketing, and any minor presentation work before listing. On the loan side, if you're refinancing the unit loan and drawing equity at the same time, some lenders charge a discharge fee on the existing loan and an establishment fee on the new one. Bridging finance adds an interest component during the bridge period, usually capitalised rather than paid monthly, so you're not juggling two repayment streams. The total interest capitalised across a typical six-month bridge can be meaningful, and it pays to model it as part of the overall cost.
The options worth weighing:
- › Sell first, then buy: no bridging cost · proceeds confirmed · risk of a price gap if the market moves · may need short-term rental between sales
- › Buy first with bridging finance: no forced sale timeline · peak debt plus capitalised interest · assessed on end debt · 6 to 12 month bridge term
- › Simultaneous settlement: buys and sells on the same day · cleanest outcome · hardest to coordinate · requires both agents and both lenders to align
Source: Queensland Revenue Office.
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How much can you borrow when upsizing from a unit to a house in Logan?
Your borrowing capacity for the house purchase is shaped by your income, your existing debts, and the net equity position on the unit. If you're selling the unit, lenders factor its expected net proceeds into the structure, effectively reducing the loan required on the new property. If you're keeping it, the existing mortgage runs as an ongoing commitment and reduces what you can borrow for the house.
Most lenders add a 3% serviceability buffer on top of the actual rate when assessing what you can repay, so the loan is assessed at roughly 9% even if the actual rate is lower. That buffer applies to both the unit loan and the house loan if you're holding both. CoreLogic data shows house medians across Logan suburbs in a wide range, from around $720,000 in Woodridge and Logan Central up to $880,000 in Browns Plains and beyond $990,000 in Tanah Merah, so the size of the loan, and therefore the buffer's impact, varies considerably depending on where you're buying.
Source: CoreLogic (via YIP, mid-2026) and APRA.
When does upsizing from a unit not make sense?
Upsizing is the right move for many Logan owners, but there are situations where the timing or the structure works against you. If your unit's equity hasn't grown enough to bring the new loan's LVR below 80%, you'll either pay lenders mortgage insurance on the house purchase or need additional cash savings to bridge the gap. That LMI premium on a large loan is a real cost that can tip the overall economics of upsizing sooner rather than later.
If you're in a fixed rate period on your unit loan, breaking it to access equity or to refinance before the upsizing purchase can trigger a break cost, sometimes a substantial one depending on how far rates have moved since the loan was written. In that case, waiting for the fixed term to expire, or structuring the new purchase independently without touching the existing loan, is often the cleaner path. Upsizing is also worth pausing if your household income has recently changed, whether through a new role, a return from parental leave, or a business that's had an uneven year. Lenders assess your capacity on current income, and an application during a transitional period usually produces a lower number than one lodged six months later when the picture is stable.
Where I'd personally push back on rushing the move is when someone is six months into a new job and the unit hasn't quite hit two years of growth yet. Both those things are fixable with time, and the loan you get after waiting is almost always materially better than the one you'd be approved for today.
Nevada Matthews · Mortgage Broker and Co-Owner, Cube Loans · Chat to Nevada →
How do you upsize from a unit to a house in Logan, QLD, step by step?
Step 1: Talk to us
We map your equity position, your borrowing capacity on the new purchase, and which sequencing approach suits your timeline, before you make any commitments.
Step 2: Understand your unit's value and your loan options
We order a preliminary valuation and confirm which lenders on our panel will give your equity structure the most favourable assessment, whether that means a straightforward refinance and equity release or a bridging loan.
Step 3: Apply, exchange and manage the purchase
We prepare and lodge the application with the right lender, handle the approval conditions, and coordinate with your conveyancer so the settlement timeline on the house lines up with your unit's sale or handover date.
Step 4: Settle and close out the unit loan
Once the house settles, we confirm the unit loan is discharged cleanly and that the new loan structure reflects exactly what was approved, with no surprises at the final figures.
What goes wrong when people upsize from a unit to a house?
The four things that delay or derail upsizing purchases:
- › Overestimating usable equity: buyers plan around a real estate estimate and then discover the lender's valuation comes in lower, leaving a deposit shortfall they hadn't budgeted for.
- › Underestimating the total transaction cost: selling costs, transfer duty on the new purchase and bridging interest together can add up to well over $30,000, and buyers who've planned only for the deposit often find themselves short at settlement.
- › Applying to the wrong lender for bridging finance: not every lender offers bridging products, and those that do have different terms for the bridge length, the LVR allowed against combined security, and how they assess the end debt. Applying to one and being declined leaves an enquiry on the credit file.
- › Missing the APRA DTI cap timing: upsizing while carrying the unit loan can push the combined debt-to-income ratio above the threshold some lenders are managing. A lender near its quota in a given quarter may decline a file it would have written three months earlier, which is why lender selection and timing matter here.
Source: APRA.
Frequently Asked Questions
Can I use the equity in my Logan unit as a deposit on a house?
Yes, usable equity, typically the amount above 80% of the unit's value minus what you owe, can be accessed via a refinance or as part of a bridging loan structure and used as the deposit on your next purchase.
Do I have to sell my unit before I can buy a house in Logan?
No, bridging finance allows you to buy the house first. Most lenders assess your borrowing capacity on the end debt once the unit sells, not on the larger combined balance during the bridge period.
Is bridging finance or selling first the better option for Logan upsizers?
Selling first removes bridging interest costs and confirms your proceeds, but it can put you under time pressure. Bridging finance gives you flexibility but adds capitalised interest across the bridge term, usually six to twelve months.
How long does a bridging loan typically last for an upsizing purchase?
Most bridging loans run six to twelve months. If the unit is already listed, lenders generally approve a six-month term; if it's not yet on the market, twelve months is more common.
What transfer duty will I pay when upsizing to a house in Logan, QLD?
As an existing owner upsizing, the first-home concession no longer applies. You'll pay standard Queensland transfer duty on the house purchase price, calculated via the QRO's online calculator for your exact figure.
Should I use a mortgage broker or go directly to my bank when upsizing?
A mortgage broker, every time. Upsizing involves equity release, bridging structure and lender policy on end-debt assessment, and those three decisions vary substantially across lenders. Your existing bank is one option, not a benchmark for the market.
Your Next Steps
Upsizing from a unit to a house in Logan, QLD involves more moving parts than a standard first purchase, and the sequence you choose, sell first, buy first, or simultaneous settlement, changes the loan structure, the costs and the lender options available to you. Getting the equity assessment right from the start is what makes the rest of the plan hold together.
Ready to find out which lenders will work best for your upsizing move? Contact the Cube Loans team or call 1800 774 756. We'll canvas our 60+ lender panel and find the most suitable options for your circumstances.
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External Resources
Cube Loans, Loganholme and Logan, QLD, Cube Central Pty Ltd, Credit Representative 472851, authorised under Australian Credit Licence 517192, General information only - this article does not constitute financial advice. Please consider your own circumstances and seek professional advice before making any financial decisions.
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