How a Mascot Couple Upgraded Homes Without Selling Their First Unit

Buying your first Mascot apartment is one decision.

Deciding what to do with it when you want a bigger home is another entirely.

This case study follows a Mascot couple who bought a starter unit, then upgraded to a house nearby without being forced to sell too soon. We’ll unpack their numbers, loan structures and decision points – and give you a practical framework you can copy this week.

The core lesson from this Mascot upgrade case study

A Mascot couple bought a modest apartment using first‑home schemes, paid the loan down, then used equity release plus a clear buffer strategy to buy a house while keeping the original unit as a long‑term asset.

They avoided a forced sale by:

1. Capping their combined loans at around 80% loan‑to‑value ratio (LVR).
2. Stress‑testing repayments at 3% above current rates.
3. Keeping 4–6 months of total holding costs in cash/offset.
4. Planning tax and loan structures together so the former home could become an investment later.

You can apply the same steps – with your own numbers – before you sign another contract.

1. Meet the couple and their starting point in Mascot

1.1 Their situation in plain numbers

Let’s call them Alex and Priya.

• Location: Mascot, 2020
• Ages when they bought: 29 and 31
• Jobs: Engineer (PAYG), marketing manager (PAYG)
• Combined gross income at the time: ~$220,000 p.a.
• Savings: $95,000 in cash
• No other debts, no kids yet

They wanted:

• A two‑bed unit in Mascot so they could have a home office and future nursery.
• Walking distance to the station.
• Ability to upgrade to a house in 7–10 years without being “trapped” by a bad loan structure.

They were typical of many readers of:

• The real 2026 cost of buying your first home in Mascot
• Practical ways to use FHBG, FHSS and NSW concessions in Mascot

They didn’t just want a first home. They wanted a 10+ year plan from day one.

1.2 The first Mascot purchase – realistic price and deposit

Using the 2026 numbers from /insights/real-cost-buy-first-home-mascot-2026 as a guide:

• Typical two‑bed total budget: $1.0m–$1.25m including costs.

For Alex and Priya, we’ll work with:

• Purchase price: $1,000,000 Mascot two‑bed apartment
• Buying costs (legal, inspections, small buffer for strata levies adjustment, etc.): $15,000
• Total needed: $1,015,000

They used:

• $80,000 of savings as deposit (leaving some buffer).
• First Home Guarantee (FHBG) to avoid lender’s mortgage insurance (LMI) at 5% deposit.
• Kept $15,000 in cash as an emergency buffer.

Initial loan:

• Loan amount: $935,000 (about 92% of price, but FHBG covers part of that risk for the bank).
• Product: Principal & interest (P&I), 30‑year term.
• Indicative interest: say 5.8% p.a. variable (illustrative only, not a live quote).

Approximate monthly repayment at 5.8%:

• Around $5,500 per month.

Initially, this was about 28–30% of their after‑tax income, within a safe band for dual PAYG earners.

Starting in a well-bought Mascot apartment can be the foundation for a later upgrade.

2. Setting up the first loan so it wouldn’t trap them later

The key difference between Alex and Priya and many first‑home buyers: they built in flexibility for the upgrade.

2.1 Clean loan structure from day one

They set up their loan as:

• Single home loan split for the Mascot unit (owner‑occupied purpose).
• 100% offset account linked to that loan.
• No credit cards or personal loans.

Why this matters later:

• Loan purpose, not the property, drives tax deductibility (see /insights/step-by-step-plan-uncross-your-loans-without-fire-sales).
• By keeping their home loan clean and using offset instead of redraw, they preserved the option to turn this loan into a mostly tax‑deductible investment loan if they moved out and rented the unit.

2.2 Buffer from day one – not an optional extra

They followed a simple buffer rule informed by prior work on buffers:

• Keep 3–6 months of total holding costs in offset or savings.

Holding costs at start:

• Repayments: ~$5,500 per month
• Strata, council, utilities, insurance: say ~$900 per month
• Total monthly holding cost: ~$6,400

Minimum buffer target:

• 3 months × $6,400 = $19,200

They started with $15,000 and aimed to build to ~$25,000–$30,000 over the next two years.

This lines up with the idea that post‑settlement buffers meaningfully reduce forced‑sale risk (see /insights/can-you-afford-first-home-green-square-numbers-walkthrough).

2.3 How they paid the loan down faster (without burning their buffer)

They:

• Set repayments slightly above minimum (rounding up to $6,000/month when they could).
• Directed bonuses and tax refunds into the offset, not directly into the loan.

After 5–6 years of steady work and some pay rises:

• Their loan balance had fallen to $830,000.
• They had $90,000 in the offset.

Effective debt (loan minus offset) = $740,000.

3. Fast‑forward: wanting a Mascot house without selling the unit

Around year 7, life changed.

• Ages: mid‑30s.
• Incomes had grown: combined gross now $280,000 p.a.
• One child, school still a few years away.
• They wanted a semi‑detached or small freestanding house in Mascot or nearby.

But they also:

• Still liked the unit.
• Could see rental demand staying strong close to the airport and train.
• Wanted a “Plan B” asset if careers or family arrangements changed.

This is exactly the crossroads discussed in /insights/exit-strategies-selling-or-holding-your-mascot-property-as-life-changes.

3.1 What they could sell for vs what they owed

Indicative valuations in year 7:

• Mascot two‑bed estimated value: $1,150,000
• Current loan: $830,000
• Offset balance: $90,000

Headline equity:

• $1,150,000 − $830,000 = $320,000 equity on paper.

But usable equity is not the same as headline equity.

Most lenders are comfortable up to 80% LVR without LMI.

• 80% of $1,150,000 = $920,000.
• Current loan: $830,000.

Indicative maximum equity release at 80% LVR:

• $920,000 − $830,000 = $90,000.

In other words, they could borrow up to another $90,000 against the unit without crossing 80% LVR.

They already had $90,000 in offset, so total available for a new purchase deposit and costs looked like:

• Cash/offset: $90,000
• Potential equity release: $90,000
• Total potential pool: $180,000 (before keeping any buffer).

4. Mapping the upgrade options: sell, keep, or bridge

4.1 Three main upgrade paths

For an upgrade, the classic three are:

1. Sell‑then‑buy – use sale proceeds as a big deposit.
2. Buy‑then‑sell (bridging) – more timing flexibility but higher risk/cost.
3. Keep‑and‑buy – use equity and borrowing power to hold both.

Alex and Priya wanted option 3 – keep the unit and buy the house – but only if they could do it safely.

To test this, we compared two scenarios.

Scenario A – Sell the unit, buy the house

Assume:

• Sale price: $1,150,000
• Selling costs (agent, marketing, legals): ~2.5% = $28,750
• Net before paying out loan: $1,121,250
• Pay out loan: $830,000

Leftover cash from sale:

• $1,121,250 − $830,000 = $291,250

Plus offset funds ($90,000), total available for next purchase ≈ $381,000.

Scenario B – Keep the unit, use equity and cash to buy the house

• Keep the existing loan at $830,000.
• Release an extra $90,000 equity (new separate loan split secured by the unit).
• Keep at least $30,000–$40,000 as buffer.

Available for new purchase (rough working):

• Offset: $90,000 − $35,000 buffer = $55,000
• Equity release: $90,000
• Total usable funds: $145,000.

This is a much smaller effective deposit than the sell‑first option – but they get to keep the unit.

4.2 What house budget does this support?

Let’s target an 80% LVR on the new Mascot house as well.

• Suppose target house price: $1.5m–$1.7m (realistic for a small Mascot house or semi).

At 80% LVR:

• 20% deposit on $1.5m = $300,000 + say $70,000 costs (stamp duty + legals, checks).
• Rough total to complete: $370,000.

They only had $145,000 without crossing 80% LVR on the unit.

So something had to give:

• Either lower house budget,
• Accept higher LVR (and possibly LMI) on the new purchase,
• Or pull more equity out and run a slightly riskier profile for a while.

This is where a decision‑grade framework matters.