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Should You Keep Your Old Dover Heights Home As An Investment?

A decision-grade guide for Dover Heights upgraders weighing up whether to keep their current home as an investment when moving for schools, space or lifestyle.

13 Sept 2026Updated 13 Sept 20268 min read

Key Takeaway

Keeping your old Dover Heights home as an investment only makes sense if, after upgrading, total home and investment loan repayments stay under about 30–35% of net income when stress‑tested at rates 3% higher and you still hold at least 6 months of buffers. With Sydney’s Eastern Suburbs prices, many families are equity‑rich but cashflow‑tight, so modelling realistic rent and new negative gearing limits is critical. The actionable step is to run a five‑number stress test before committing to “keep and rent”.

Should You Keep Your Old Dover Heights Home As An Investment?

Keeping your old Dover Heights home as an investment when you upgrade can work well if you clear two tests: 1) total home plus investment repayments stay under roughly 30–35% of your after‑tax income even with interest rates 3% higher; and 2) you still hold 6–12 months of full holding costs in cash or offset. If either test fails, you’re likely taking on more risk than is sensible in today’s market.

Dover Heights family home prepared for rental inspection Preparing your former family home for the Dover Heights rental market.

How to decide: the five-number Dover Heights framework

Before you fall in love with “keeping a foothold” in Dover Heights, run these five numbers:

  1. Usable equity in your current home.
  2. Deposit gap for the new home (purchase price plus costs minus your cash and equity).
  3. Safe repayment level at a 3% higher rate.
  4. Realistic net rent on the old home.
  5. Post‑move buffer in cash/offset.

This mirrors the five‑number approach used for other Eastern Suburbs upgraders (/insights/bridging-loans-dover-heights-upgraders-keep-rent-or-sell and Rose Bay equivalents) but tailored to Dover Heights price points.

Worked example: upgrade and hold in Dover Heights

Assume:

  • Current home value: $3.2m
  • Loan: $1.3m (P&I, 25 years remaining)
  • New home target: $4.0m
  • Household after‑tax income: $420,000 p.a. (~$35,000 per month)

1. Usable equity
At 80% LVR, maximum total lending on current home ≈ $2.56m. With a $1.3m loan, potential equity is $1.26m. To be conservative, you might only use $800k–$900k to leave buffer.

2. Deposit gap
On a $4.0m purchase, 20% deposit is $800k plus say $200k for stamp duty and costs ≈ $1.0m. Between cash savings and equity, you need to comfortably cover this and still keep a reserve.

3. Safe repayment level
Using the 30–35% rule applied in other Eastern Suburbs guides (e.g. /insights/borrowing-power-upgrade-unit-to-semi-terrace-eastern-suburbs), target total repayments ≤35% of after‑tax income under a 3% rate buffer.

35% of $35,000 ≈ $12,250 per month. That needs to cover both your new home and investment loans under stressed rates.

4. Realistic net rent
Say the old home could rent for $2,500–$3,000 per week ($10,800–$13,000 per month) in the current Eastern Suburbs market. After agent fees, insurance, maintenance and vacancy, assume 70–75% of gross rent as usable for loan cover.

5. Post‑move buffer
Aim for at least six months of full holding costs (new home + old home + living expenses) in cash or offset, consistent with broader two‑property guidance.

Keep vs sell: how the numbers usually stack up

Here’s how “keep and rent” often compares to “sell then buy” for Dover Heights families.

ScenarioKeep & Rent Old HomeSell Old Home First
Equity releasedEquity split for deposit + costs, some bufferLarger cash deposit, potentially >30%
Total debt after moveHigher – two loans (home + investment)Lower – one main home loan
Monthly repayments (stressed)Closer to 30–35% of net income or aboveOften <30% of net income
Cash/offset bufferThinner unless equity release is disciplinedUsually stronger, simpler
Tax treatmentSome interest deductible on investment loanMostly non‑deductible home loan interest
Flexibility if income fallsLower – must cover both propertiesHigher – can downsize or refinance more easily

In the current RBA environment of higher-for-longer rates (see August 2026 financial conditions chapter), doubling down on debt only works if your income and buffers are robust.

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Frequently asked questions

Is it better to pay off my new Dover Heights home or keep the old one as an investment?
For most families, reducing risk on the new home comes first. Keeping the old place as an investment only stacks up when, after both loans, stressed repayments stay under roughly 30–35% of your after-tax income and you hold at least six months of buffers. If you’re above those levels, selling and paying down the new home loan is usually safer.
How much equity do I need to keep my old home when I upgrade?
You usually need at least 20% deposit plus costs for the new property and to stay under 80% LVR on both properties after settlement. In practice, that often means total equity of around 35–40% across your current and target homes. Beyond that, the real tests become cashflow under stressed rates and how much buffer you can keep.
Will the new negative gearing rules affect my Dover Heights investment plan?
Recent Federal Budget changes tighten negative gearing for some new residential investments, so heavy losses may not fully offset other income. Existing arrangements may be grandfathered, but you should not rely on large tax refunds to make a leveraged two-property plan viable. Always model your plan on little or no tax benefit and treat any deductions as upside.
What if I’m self-employed and want to keep my old home as an investment?
Self-employed borrowers should use stricter settings because income can fluctuate. Aim for stressed repayments at or below 25–30% of your after-tax income and hold 9–12 months of total holding costs in cash or offset. Also review any business loans or guarantees to ensure your home and new investment are not over-exposed to business risk.
Can a bridging loan help me keep my old house as an investment?
Bridging can let you buy first and decide later, but it temporarily stacks both loans at once and is assessed under a 3% rate buffer. In a high-price suburb like Dover Heights, it only makes sense when you already pass the long-term cashflow and buffer tests with room to spare. If your plan only works with perfect sale or rent assumptions, consider selling first or buying more conservatively.

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