Upsizing From a Unit to a House in Wollongong, NSW, Your Options Explained
Your unit served you well, but the walls are closing in. Maybe a growing family has made the second bedroom feel like a compromise, or you've simply watched the houses around Wollongong and thought: it's time. Whatever the trigger, upsizing from a unit to a house is one of the most consequential financial moves most owner-occupiers make, and the lending side of it is more involved than most people expect.
The good news is that unit owners in Wollongong are often in a stronger equity position than they realise. CoreLogic data shows unit medians across the area have grown steadily, and that equity is the engine that makes the jump to a house work. Whether you're in Corrimal, Dapto or closer to the CBD, the mechanics of how lenders use your existing equity determine almost everything: your deposit on the new place, whether you need bridging finance, and what your new repayments actually look like.
The SimpleFin team works with upsizers across Wollongong, NSW every week, comparing your options across 60+ lenders to find the structure that fits. The upsizing home loan side of it is where most of the difference is made.
Key takeaways
- Usable equity in your unit can fund the deposit on a house.
- Bridging finance lets you buy before your unit sells, with caveats.
- Lenders re-test your serviceability on the new, larger loan.
Can Wollongong unit owners use equity to buy a house without saving a fresh deposit?
Yes, in most cases. If your unit has grown in value since you bought it, you can borrow against that equity to fund the deposit on a house without touching your savings. The calculation lenders use is straightforward: they'll lend up to 80% of your unit's current value, subtract what you still owe, and whatever's left is usable equity. CoreLogic data shows Wollongong unit medians at $740,000 for the broader suburb, with Corrimal units at $805,500, so owners who bought several years ago have often built a meaningful buffer.
If your unit is worth $740,000 and you owe $400,000, the lender's 80% ceiling is $592,000, giving you $192,000 of accessible equity. That $192,000 can be drawn as a separate loan and applied directly to the deposit on your house purchase. What changes everything here is which lender holds your existing loan and whether they'll release equity at the valuation you expect, which isn't always a given.
Source: CoreLogic (via YIP, mid-2026).
How do lenders actually assess the move from a unit to a house in Wollongong, NSW?
Lenders don't just look at what you owe now; they re-test your full serviceability on the new, larger loan. Your income, existing debts, living expenses, and any credit card limits all go back into the assessment as if you were applying for the first time. The APRA serviceability buffer adds 3.0% on top of the actual rate when lenders stress-test your capacity, which means your new repayments are assessed at a rate meaningfully higher than what you'd actually pay.
For upsizers, the most common point of friction is the gap between what you think the move will cost and what the lender actually sees. Holding two properties simultaneously, even briefly, doubles the assessed debt load. Lenders aren't looking at what you'll owe once your unit sells; they're looking at what you owe right now.
Most upsizers come to us having done the sums on the new repayments alone, not on what they'll service during the overlap. That gap between what they expect and what the lender sees is usually where the planning falls short, and it's almost always fixable once you understand how lenders count it.
Greg Cooke · Director and Finance Broker, SimpleFin · Chat to Greg →
What does it cost to upsize from a unit to a house in Wollongong, NSW?
The costs stack up faster than the purchase price alone suggests. Transfer duty is the biggest upfront number: on an established house in NSW, first-home buyer concessions won't apply because you already own property, so you're paying full duty. At a $1,000,000 house that's a material six-figure sum before you've paid a conveyancer or moved a stick of furniture.
The main costs upsizers need to budget for:
- › Transfer duty: full rate applies; no first-home buyer exemption once you're an existing owner.
- › Loan establishment fees: a new loan or top-up on your existing facility typically carries application and valuation fees.
- › Bridging interest: if you hold both properties at once, interest capitalises on the bridging facility for the overlap period.
- › Agent and selling costs: commission plus marketing on your unit, typically 1.5% to 2.5% of sale price.
- › Building and pest inspection: essential on an older Wollongong home; costs vary by provider.
The sequence of these costs matters as much as the amounts. Duty is due at or before settlement, so it needs to be sitting in your account well before you sign a contract on the house.
Source: Revenue NSW.
How much can upsizers borrow in Wollongong, and what does your equity position change?
Borrowing capacity for an upsizer isn't fixed; it shifts significantly based on how much of your unit's equity you can release, how the lender values the new property, and what your existing loan commitments look like during any overlap period. CoreLogic data shows Wollongong house medians at $1,300,000 for the suburb, with more affordable options in Dapto at $830,500, Unanderra at $880,000, and Horsley at $899,775. Those figures matter because the gap between your unit's value and your target house price is roughly what you need your equity plus borrowing to bridge.
Whether you're buying in Dapto- Unanderra or Corrimal, how a lender values your unit and your target suburb shapes the whole structure.
A useful rule of thumb: most lenders will let you access equity down to 80% LVR on your unit without LMI. Go below that and you're either paying LMI on the equity release or putting the unit at risk of triggering a mortgage insurance event. The cleaner route is usually to sell the unit and buy the house with the proceeds, but that requires a simultaneous settlement or a temporary arrangement, which isn't always possible in a market where good houses move quickly.
Source: CoreLogic (via YIP, mid-2026).
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Should you sell your unit first, or buy the house before it sells?
This is the central decision for every upsizer and there's no universally right answer. Selling first gives you certainty: you know exactly what you have to spend, there's no bridging loan, and you're not servicing two properties at once. The downside is that you may need to rent between settlement and your new purchase, which adds cost and disruption, and in a market where houses in suburbs like Thirroul or Fairy Meadow move within days, being a cash buyer with no property to sell is a real advantage.
Buying first, by contrast, means using bridging finance. The lender calculates a peak debt (your existing unit loan plus the new purchase loan plus costs) and an end debt (what remains once the unit sells). Importantly, serviceability is assessed on the end debt, not the peak, which makes bridging more accessible than many people assume. The typical bridging term is six to twelve months, and interest capitalises during that window rather than being paid monthly.
The options worth weighing:
- › Sell first, then buy: known proceeds · no bridging loan · may require renting between settlements · strongest negotiating position as a buyer
- › Buy first with bridging finance: avoid renting · interest capitalises on peak debt · assessed on end debt · 6 to 12 month term · sale risk if unit takes longer to sell
- › Simultaneous settlement: buy and sell on the same day · cleanest outcome · hardest to coordinate · requires both parties to agree on timing
When does upsizing from a unit to a house not make sense right now?
Not every timing makes sense for the move, and a good broker should say so when it doesn't. If your unit hasn't appreciated much since you bought it, the equity may not be enough to fund a deposit on a house without paying LMI on both sides of the transaction, which erodes the benefit quickly. Similarly, if your income has recently changed, a new job or a reduction in hours can complicate the serviceability re-test at precisely the wrong moment.
The Wollongong house market also sits at a median of $1,300,000, which is a meaningful step up from most unit price points in the area. If the gap between what your unit sells for and what the house costs leaves you with a loan-to-value ratio above 80% on the new purchase, LMI becomes a real consideration. In most cases, upsizers are better served by waiting until their unit equity is clear before committing to the larger loan, rather than stretching both properties to their limits simultaneously.
When someone's unit hasn't moved much in value, we'd usually suggest waiting and building more equity before taking on the larger loan, rather than pushing through and paying LMI on both ends. The better structure almost always comes from a cleaner equity position, not from finding a lender willing to stretch.
Greg Cooke · Director and Finance Broker, SimpleFin · Chat to Greg →
How do mortgage brokers help upsizers in Wollongong, NSW structure the move?
The lender choice decides the outcome here more than most upsizers expect. Three policy differences move the numbers, and they're not published side by side anywhere.
- › Bridging loan assessment: some lenders assess the peak debt conservatively, others are willing to look further at the expected sale price. The difference can determine whether bridging is available to you at all.
- › Equity release valuation: lenders order their own valuation, which may come in below what you expect, particularly for units in high-density buildings. A lower valuation reduces your accessible equity before you've started.
- › Simultaneous loan structure: holding your unit loan and establishing your house loan can sit with the same lender or split across two. Some lenders price the package better when both facilities sit with them; others price competitively on standalone.
Comparing those three points across the panel before you apply is where a broker earns the most ground on an upsizing transaction.
What goes wrong when upsizers make the move in Wollongong?
The approval challenges worth knowing about:
- › Low unit valuation: lenders value your property independently, and a valuation below the market price you expected reduces your accessible equity at the point you need it most. Getting an upfront indication of value before committing to a purchase contract avoids this.
- › Serviceability re-test at a higher loan: moving from a $400,000 unit loan to a $1,000,000 house loan is a significant step-up in assessed repayments. If your income or expenses have changed since you last applied, the re-test can produce a different result than you expect.
- › Bridging period running long: if your unit takes longer to sell than anticipated, capitalised interest on the bridging facility accumulates. An open bridge with a 12-month term has headroom, but it isn't unlimited, and an unsold unit at month ten is a stressful position.
- › Timing the settlements poorly: buying too far ahead of your unit's settlement date stretches the bridging period unnecessarily. Aligning contract dates as closely as the market allows keeps the overlap short and the capitalised interest lower.
Frequently Asked Questions
Can I use the equity in my Wollongong unit as the deposit on a house?
Yes, most lenders will let you access equity down to 80% LVR on your existing unit and apply it as a deposit. The amount available depends on your current loan balance and the lender's independent valuation of your unit.
Do I need to sell my unit before I can buy a house in Wollongong?
No, bridging finance lets you buy first and sell later. Serviceability is assessed on your end debt, the amount you'll owe once your unit sells, which makes the arrangement more accessible than many upsizers expect.
Is it better to use bridging finance or sell my unit first?
Selling first gives you certainty and avoids capitalised bridging interest, but you may need to rent between settlements. Bridging finance suits buyers who can't coordinate simultaneous settlements and need to secure the house before it sells.
Will I pay transfer duty again when I upsize to a house?
Yes. First-home buyer duty exemptions under the NSW First Home Buyers Assistance Scheme don't apply once you already own property, so full transfer duty is payable on your house purchase at the standard NSW rate.
What's the APRA buffer and how does it affect my upsizing borrowing capacity?
The APRA serviceability buffer is 3.0% added to the actual loan rate when lenders stress-test your repayments. It means your capacity is assessed as if rates were 3% higher, which reduces the maximum loan a lender will offer.
Is a mortgage broker or a bank better for an upsizing transaction in Wollongong?
A mortgage broker, every time. Upsizing involves equity release, bridging assessment and a simultaneous loan structure, and different lenders approach each of those differently. A broker compares the options; a single bank can only offer its own.
Your Next Steps
Upsizing from a unit to a house in Wollongong, NSW is a move most owners are ready for well before they feel confident about the lending side. Understanding your equity position, how lenders assess the overlap, and what the move actually costs are the three things that separate a smooth transaction from a stressful one. The structure you choose, and the lender you use for it, matters as much as the price you pay.
If the move is on your horizon, the next step is simple. Get in touch with the SimpleFin team or call 0457 531 124. We'll work through where you stand across our 60+ lender panel.
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External Resources
SimpleFin, Wollongong and the Illawarra. This is general information only and this article does not constitute financial advice. Please consider your own circumstances and seek professional advice before making any financial decisions.
