A $700,000 investment property could be worth approximately $1.14 million after 10 years if it grew at an illustrative 5% per year, before debt, tax, buying costs, selling costs, and operating expenses. Brisbane, Perth, and Townsville can produce different outcomes because growth, rent, vacancy, insurance, supply, and finance costs do not move in step with each other. The right choice is the market and property that fit the investor's borrowing capacity, cash-flow tolerance, and portfolio strategy, not simply the location with the highest headline yield.
Put the same $700,000 budget in front of three different markets and it buys three different things. In Greater Brisbane, that figure is approaching the median house price and may access an established house in a middle-ring suburb. In the Perth metropolitan area, it can still buy well in many growth corridors. In Townsville, it sits near the local government area's recent median, meaning the same dollar buys a different asset quality, risk profile, and liquidity story.
The real question is not just what the property may be worth in 2036. It is what the investor may actually retain after vacancy, maintenance, insurance, finance costs, buying costs, selling costs, and tax. These variables interact in ways that a simple growth calculator cannot capture.
This article uses transparent scenarios, not forecasts, to show how those variables could affect a $700,000 investment across three markets. A suburb-level or property-level decision needs current, address-specific evidence well beyond this comparison. For strategy-led property buying support across all three markets, Buyers Agency Australia connects market selection with individual portfolio goals.
General information only. This article is not personal financial, tax, legal, lending, valuation, building, pest, or insurance advice. Seek qualified professional advice before making any investment decision.
How much could a $700,000 investment property be worth after 10 years?
The simple compound-growth calculation
The formula is straightforward: future value equals starting value multiplied by (1 + annual growth rate) raised to the power of years held.
Applied to $700,000 across five illustrative annual growth scenarios:
| Annual growth (illustrative) | Approximate value after 10 years |
|---|---|
| 3% | $940,741 |
| 4% | $1,036,171 |
| 5% | $1,140,226 |
| 6% | $1,253,593 |
| 7% | $1,377,006 |
Arithmetic scenarios only. Not a market forecast. Excludes debt, tax, buying costs, selling costs, and all operating expenses.
Why the property value is only one part of the outcome
A gross valuation number does not equal investor equity, and it certainly does not equal cash in hand. Start with the purchase: buying costs, including Queensland transfer duty, legal fees, and inspection costs, can add 4% to 6% on top of the purchase price for a residential investment in Queensland. In Western Australia, transfer duty rates differ.
Then layer in financing. A property purchased with an 80% loan-to-value ratio means roughly $140,000 equity in and a $560,000 loan. At an illustrative principal-and-interest rate of 6.5%, the total debt-servicing cost over 10 years is substantial before equity is calculated. Interest-only structures reduce early outgoings but do not reduce the principal debt.
Finally, subtract annual operating costs: property management fees, council rates, insurance, maintenance, vacancy periods, and body corporate where applicable. These commonly total 30% to 40% of gross rent, depending on market and property type. Using an investment property calculator without modelling these costs produces a number that overstates the actual return.
How this Brisbane, Perth and Townsville comparison was built
The base assumptions and scenario ranges
The model uses a $700,000 purchase price as the starting point. It is not the total acquisition budget. A buyer should add transfer duty, legal costs, building and pest inspection, and buyers agency fees where applicable.
The table below outlines the key inputs. All figures are illustrative assumptions informed by dated market sources. They are not forecasts and should not be used as the sole basis for any investment decision.
| Input | Brisbane | Perth | Townsville |
|---|---|---|---|
| Geography | Greater Brisbane (GCCSA) | Perth metropolitan area | Townsville LGA |
| Property type assumed | Established house, middle ring | Established house, middle ring | Established house |
| Starting weekly rent (illustrative) | $700 | $750 | $620 |
| Gross yield (illustrative) | ~5.2% | ~5.6% | ~4.6% |
| Vacancy assumption | 1.0% (REIQ, Jun 2026 Qtr) | 1.9% (REIWA, Aug 2026) | Refer to REIQ regional data |
| Operating costs | ~35% of gross rent | ~35% of gross rent | ~40% of gross rent |
| Finance scenario (illustrative) | 80% LVR, 6.0%–7.0% P&I | 80% LVR, 6.0%–7.0% P&I | 80% LVR, 6.0%–7.0% P&I |
| Conservative value growth | 3% p.a. | 3% p.a. | 2% p.a. |
| Base value growth | 5% p.a. | 5% p.a. | 4% p.a. |
| Stronger value growth | 7% p.a. | 7% p.a. | 6% p.a. |
Model date: October 2026. Sources: REIQ Residential Vacancy Rate Report (June 2026 Quarter); REIWA rental vacancy data (August 2026); ABS Regional Population (2024–25 financial year, released 31 March 2026). Weekly rent inputs are illustrative only and not sourced from a specific comparable property.
Methodology disclosure: This table is an illustrative comparison and not a ranking of future returns. No overall winner is declared. Scenario fit depends on the investor's brief, finance position, and property-level evidence.
What the model excludes
The model does not include tax treatment, including negative gearing outcomes or capital gains tax on disposal, because these depend on individual circumstances and should be assessed by a qualified accountant. It also excludes selling costs (agent commission, legal fees, discharge costs), property-specific insurance quotes, exact maintenance costs, strata or body corporate levies, and any personalised borrowing capacity assessment. All of those inputs can materially shift the net outcome.
Brisbane: what could a $700,000 investment property look like after 10 years?
Brisbane growth, rental demand, and entry-price considerations
Greater Brisbane recorded population growth of 2.1% in the 2024–25 financial year, adding 58,200 residents, according to ABS Regional Population data released 31 March 2026. That sustained population growth supports ongoing rental demand.
The Queensland-wide vacancy rate sat at 1.0% for the June 2026 quarter, according to the REIQ Residential Vacancy Rate Report, well below the REIQ's healthy benchmark of 2.6% to 3.5%. Greater Brisbane held stubbornly at that same level through the quarter.
At $700,000, a Brisbane buyer is approaching the metropolitan median for houses. That is an important constraint: the property may be an established house in a middle-ring suburb or a well-located unit, not necessarily a premium asset. Supply in approved development corridors and new unit stock near the CBD can affect resale depth and rental competition, which matters most in the outer years of a 10-year hold.
Brisbane risks that could change the result
Affordability pressure is real. Brisbane's dwelling median has risen sharply, which compresses gross yields for buyers entering at current prices. Flood exposure varies significantly by suburb and individual property, and Townsville's experience is a reminder that insurance costs tied to flood risk should be assessed at address level before any purchase. Cash-flow sensitivity to interest rate movements is higher when the gross yield is already narrow.
Perth: what could a $700,000 investment property look like after 10 years?
Perth affordability, rent, and market-cycle considerations
Greater Perth recorded population growth of 2.4% in 2024–25, the fastest of any Australian capital city, adding 58,100 residents, according to ABS Regional Population data (released 31 March 2026). That demand has kept the rental market historically tight.
Per REIWA's rental vacancy data, Perth's vacancy rate was 1.9% in August 2026, down from 2.2% in July 2026. Median weekly house rent held at $750 through mid-2026 (REIWA, August 2026). At $700,000, a Perth buyer can access established houses across a range of middle-ring and outer suburbs, with Perth's median unit price reaching $681,000 to $690,000 in July to August 2026 according to REIWA.
Perth risks that could change the result
Per's recent rental tightness and price growth have attracted significant investor attention, which brings its own risk. A market that has run hard can moderate, and one vacancy quarter should not be treated as a 10-year assumption. Employment in Western Australia retains some concentration in resources-related sectors, meaning a commodity cycle shift could affect both tenant demand and resale confidence. Property condition, building quality, and local supply pipeline all require address-level assessment. Resale liquidity in outer suburbs can also be shallower than headline figures suggest.
Townsville: what could a $700,000 investment property look like after 10 years?
Townsville income, employment, and affordability considerations
Townsville's economy draws on defence (Lavarack Barracks), healthcare (Townsville Hospital and Health Service), education (James Cook University), and a significant port. That employment diversity supports more stable rental demand than a purely resource-dependent town, but it is not the same depth of tenant pool as a capital city.
The Townsville LGA recorded a median house price of approximately $700,000 in the first half of 2026, according to Opteon data cited by market commentators. The REIQ June 2026 Quarter report noted that Townsville vacancies fell by 0.3 percentage points over the quarter, and the Queensland-wide rate remained at 1.0%. Gross yields in Townsville have been cited at approximately 4.8% to 5%+ at current prices, though those figures should be verified against dated comparable rental evidence for any specific property.
Townsville risks that could change the result
Flood mapping is a material consideration for any Townsville property. Townsville City Council's flood mapping is based on modelled flood events and does not substitute for independent, address-level verification. Insurance costs in flood-mapped areas can be substantially higher than mainland capital city equivalents, and that cost must be built into any cash-flow model rather than treated as a footnote.
Regional exit liquidity is another variable. Fewer comparable buyers at resale than a capital city market means the eventual sale price and time on market carry more uncertainty. For investors considering Townsville property investment, the combination of flood risk, insurance, employment base, and resale depth all require property-level scrutiny before committing.
Side-by-side comparison of 10-year investment property returns
Illustrative value, rent, cost, and equity table
| Metric | Brisbane | Perth | Townsville |
|---|---|---|---|
| Starting price | $700,000 | $700,000 | $700,000 |
| Starting weekly rent (illustrative) | $700 | $750 | $620 |
| Gross yield (illustrative) | ~5.2% | ~5.6% | ~4.6% |
| Vacancy assumption | 1.0% | 1.9% | 1.5% (illustrative) |
| Operating costs (% of gross rent) | ~35% | ~35% | ~40% |
| Conservative value (3%/3%/2% pa) | ~$941k | ~$941k | ~$854k |
| Base value (5%/5%/4% pa) | ~$1.14m | ~$1.14m | ~$1.04m |
| Stronger value (7%/7%/6% pa) | ~$1.38m | ~$1.38m | ~$1.25m |
| Main risk | Yield compression, flood exposure | Market cycle, employment concentration | Flood, insurance, exit liquidity |
| Portfolio fit | Growth-focused, capital city depth | Growth and income balance, cycle awareness | Income-focused, regional entry price |
All values are arithmetic scenarios only. Excludes tax, selling costs, buying costs, finance costs, and individual property variables. Illustrative model, October 2026.
What happens when the growth or interest-rate assumption changes?
A 2 percentage point reduction in annual growth changes the 10-year base outcome substantially. At 3% instead of 5%, the Brisbane and Perth scenarios reach approximately $941,000 rather than $1.14 million. For Townsville, a 2% annual growth scenario produces approximately $854,000 over a decade.
On the finance side, a 2 percentage point rise in the interest rate on a $560,000 loan adds approximately $11,200 per year in extra interest costs on an interest-only structure, according to transparent arithmetic using the RBA's current monetary policy context. Investors should model at least two interest-rate scenarios before committing to a borrowing structure.
Which matters more over 10 years: capital growth or rental yield?
Both matter, but they serve different functions in a portfolio. Capital growth builds equity and borrowing capacity for the next acquisition. Rental yield reduces holding costs and cash-flow pressure, particularly through periods of rate movement.
Gross yield is not net cash flow. A 5.6% gross yield on a $700,000 property generates approximately $392 per week in gross rent. After a 35% operating-cost deduction (management, rates, insurance, maintenance, vacancy), net rental income falls to roughly $255 per week before debt servicing. On an 80% LVR loan at 6.5%, the weekly interest-only repayment on $560,000 is approximately $700. The property is negatively geared at that scenario, which may be acceptable for a growth-focused investor using tax deductibility, but it is a cash-flow reality that must be modelled honestly.
The priority between capital growth and rental yield depends on three things: how much cash the investor can service above rental income each month, how much borrowing capacity the rental income supports, and where the property sits in the overall portfolio sequence. A first property needs different weighting than a third or fourth.
Tax treatment of rental expenses is subject to current ATO rental property guidance and the investor's individual circumstances. Do not assume deductibility without qualified tax advice.
What could change the result over the next 10 years?
Interest rates directly affect both monthly holding cost and the borrowing capacity of future buyers, which influences resale price. The RBA's cash rate and lender assessment buffers create a direct link between the rate environment and property values.
Supply is the variable most often underestimated. A suburb that is well positioned today may face unit oversupply, infrastructure-led rezoning, or developer activity that changes rental competition within the decade. Infrastructure promises are not the same as completed infrastructure. Distinguish announced from funded and under-construction projects when assessing location drivers.
Population and employment trends matter over a decade, but they are not linear. A sector downturn in resources (relevant to Perth and Townsville's employment mix), a natural disaster event, or a demographic shift can alter both tenant demand and resale confidence mid-hold.
Insurance and maintenance are the variables most commonly omitted from property investment growth calculators. In flood-mapped areas of Townsville and parts of Greater Brisbane, insurance premiums can run well above the national average and compound over 10 years. Maintenance on an older property adds unpredictably.
Tax and regulatory settings, including land tax thresholds, tenancy regulations, and capital gains treatment, can change across a 10-year hold. Build in professional tax review as a recurring cost, not a one-off at purchase.
How should you assess whether a $700,000 property fits your strategy?
Check the investor brief before the postcode
Before looking at any specific suburb, confirm:
- Is $700,000 the purchase price, the total budget including costs, or the borrowing limit?
- What deposit is available and what does that imply for the loan-to-value ratio?
- Can the borrowing structure be comfortably serviced if rent drops by 10% or the rate rises by 2%?
- Is the objective growth, income, or a balance of both?
- What is the minimum acceptable time horizon?
- Is the property a standalone asset or part of a multi-property strategy?
Answering these before researching postcodes avoids the common mistake of selecting a market first and retrofitting a strategy to it.
Test the property at address level
Once the investor brief is clear, every shortlisted property needs individual due diligence. That means:
- Comparable sales: Recent, like-for-like settled sales within the past 90 days in the same suburb and property type.
- Rental appraisal: A written estimate from a licensed property manager, not an asking-rent figure from a listing portal.
- Building and pest inspection report: A qualified inspector assessing structure, moisture, pests, and compliance.
- Zoning and overlays: Check the applicable state planning framework for current and future land use restrictions.
- Flood and hazard mapping: Use council mapping as a starting point, then verify at address level. For Townsville, the City Council's flood mapping should be reviewed alongside an independent assessment.
- Insurance: Obtain a quote before the offer is made. A premium that makes the cash-flow unworkable is a deal-breaker.
- Contract review: A qualified conveyancer or solicitor should review all contract terms, conditions, and disclosures before exchange.
- Exit plan: Identify comparable buyer demand and time on market for similar properties in the same suburb to test resale liquidity.
A buyers agent can help coordinate and prioritise these steps, but does not replace a conveyancer, solicitor, lender, accountant, valuer, building inspector, or pest inspector.
When this is not the right fit
A self-directed investor with current local knowledge of a specific market, professional support already in place, access to comparable data, and a repeatable due diligence process may not need full-service buyer-side representation. The value of a buyers agent is strongest when the investor is purchasing interstate or in an unfamiliar market, needs access to off-market stock, wants objective assessment of multiple properties against a defined brief, or lacks time to coordinate due diligence across multiple professional inputs.
Book a free strategy session to clarify which approach fits your situation before committing either way.
Where a strategy-led buyers agent may add value
Buyers Agency Australia works with investors who need a structured process for defining their brief, comparing markets, sourcing suitable properties, assessing value and risk, negotiating, and coordinating settlement. Dragan Dimovski, who brings more than 20 years of property experience to each client engagement, leads the team's strategy-led approach.
For the Brisbane, Perth, and Townsville comparison, that process means connecting the 10-year model with a specific investor's finance position, growth or income priority, and property-level evidence, rather than naming a city winner. The team's approach is documented in the Brisbane 10-year modelling case study (a first-party example, not independent evidence and not a typical outcome).
The brand's service does not guarantee capital growth, rental income, borrowing approval, or any specific return.
Frequently asked questions
What could a $700,000 investment property be worth after 10 years?
The result depends entirely on annual growth, costs, debt, and the property itself. At an illustrative 5% per year, the starting value grows to approximately $1.14 million before all costs and debt.
How do you calculate investment property returns?
Returns require separating value change, rental income, operating costs, finance costs, buying costs, selling costs, and tax treatment. Combining them into one percentage without disclosure creates a misleading figure.
Is Brisbane or Perth better for property investment?
Neither is universally better. Brisbane offers capital-city depth and population growth; Perth offers tight vacancy and recent price momentum. The right market depends on the investor's brief, finance position, and property-level evidence.
Is Townsville a good place to invest in property?
Townsville may suit some income or affordability strategies, but flood risk, insurance costs, regional employment concentration, vacancy movement, and resale liquidity all require address-level assessment before any decision.
Which matters more, capital growth or rental yield?
The priority depends on borrowing capacity, cash-flow tolerance, time horizon, and where the property sits in the portfolio. Neither metric is useful in isolation without the other.
Does vacancy rate affect 10-year investment returns?
Yes. Every percentage point of additional vacancy reduces gross rental income across the hold period. A single quarterly figure should not be projected forward as a decade-long constant without a sensitivity range.
Should interest rates be included in an investment property calculator?
Yes, whenever debt is used. Model at least two scenarios: the current rate and a rate 2 percentage points higher. The RBA's monetary policy settings are one input, but lender assessment buffers may differ.
What costs are often missing from a property growth calculation?
Transfer duty, legal costs, inspection fees, insurance, maintenance, property management, vacancy, finance costs, tax, and selling costs are commonly omitted. Missing even two or three of these can overstate the return significantly.
How do I compare a property in three different cities?
Standardise the model inputs, define the geography clearly (Greater Brisbane vs Brisbane LGA, for example), compare equivalent property types, and then test each property at address level with comparable sales and rental evidence.
Can a buyers agent guarantee capital growth or rental returns?
No reputable buyers agent can guarantee those outcomes. They depend on market conditions, property quality, finance structure, costs, and decisions made over the hold period.
Your next decision: compare the scenario, then the property
The model in this article is a starting point for investment property returns analysis, not a conclusion. Before acting on any comparison, confirm six things:
- Whether $700,000 means the purchase price or the total budget including costs.
- Borrowing capacity, deposit position, and the holding cost at current and stressed rates.
- The investment objective: growth, income, or a balance of both.
- Which of Brisbane, Perth, or Townsville fits that objective using identical model inputs.
- Current rent, vacancy, supply, insurance, flood, zoning, condition, and comparable sales at the individual property level.
- Whether independent research or structured buyer-side support is the appropriate approach for your situation.
If you are ready to move from scenario to strategy, book a free strategy session with the Buyers Agency Australia team. The purpose is to assess strategy and fit, not to push a purchase. To speak directly, contact the Buyers Agency Australia team and outline your brief.
