Thirroul, NSW 2515
Wollongong City Council, New South Wales
Good to Know
Thirroul, NSW 2515 is a high-value house market in the Wollongong City Council area, currently positioned as a long-hold capital growth submarket. Located on the Illawarra coast roughly 60 km south of Sydney CBD, Thirroul is home to roughly 6,348 adults across 2,860 dwellings and currently records a vacancy rate of 1.76%.
According to HtAG Analytics, Thirroul is exhibiting a supply-constrained yet balanced trading rhythm. Stock on Market sits at 0.37% and Inventory at 3.23 months — close to the ~3-month balanced-market threshold — driving +5.2% YoY price growth and +8.4% YoY rent growth.
What the market data is signalling
Thirroul shows stronger rental momentum than recent price moves: rents are up 8.4% over 12 months while prices are up 5.2%. That split, combined with very low Stock on Market (0.37%) and a balanced Inventory (3.23 months), suggests demand is firm and stock is tight enough to support further rent-led returns even as capital growth continues.
Explore the broader positioning with the Markets in the Moment (MiM™) heatmap to see where Thirroul sits against other concentration and momentum signals.
Who lives in Thirroul — and why it matters for investors
Thirroul scores in the top decile on IRSAD (10), indicating high affluence and household capacity to sustain pricing — a factor that typically lowers downside volatility and supports long-cycle capital preservation. The renter/owner split is 20% (neutral), and the units/houses mix is 19% (neutral), showing a resident base skewed to owner-occupied houses rather than investor-heavy unit stock.
Read the IRSAD Crossover study to understand how socio-economic position links to price resilience and growth patterns.
Why suburb-level data matters for Thirroul
Council-level averages can smooth out pockets like Thirroul. For investment decisions you should rely on Thirroul’s own indicators: a typical house price of $2,001,103, an indicative gross yield of 2.95% (below the common 3% cashflow threshold), Stock on Market at 0.37% (very low supply/opportune), Inventory at 3.23 months (balanced), and median days on market of 39 days (neutral turnover). These suburb-level metrics tell a different story than a blended council average would.
Learn more about why location granularity matters in our LGA vs Suburb research. For a detailed export of the numbers, download the full Thirroul data guide.
What's behind the RCS™ score of 65
The HtAG RCS™ (65) combines three independent dimensions — risk minimisation, capital-growth potential and cashflow resilience — into a single, comparable score. That composite masks important sub-score differences, so investors should inspect component ratings to match Thirroul to a strategy (growth, income or blended).
See how the RCS™ is built, then open Thirroul in HtAG Copilot to inspect component scores and scenario-testing.
Forward signals to watch
vacancy rate — currently 1.76%: a sustained balanced vacancy near this level over 12–24 months usually supports steady rent growth without creating immediate rental compression or landlord distress.
building approvals ratio — currently 0.48%: a neutral approvals rate that does not signal rapid new-supply pressure, so existing stock tightness is likely to persist unless approvals climb materially.
Sydney cycle phase: any city-wide shift toward a later expansion or early contraction phase would tend to slow price momentum in Thirroul and prioritise investor focus on rental resilience and yield; conversely, renewed metropolitan strength would amplify local capital gains.
Does this area meet your investment goals?
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RCS Breakdown
Thirroul's RCS™ headline is an overall signal — but it doesn't tell you why. The three sub-scores below reveal whether that score is earned through risk minimisation, capital growth, or cashflow — and which portfolio brief it fits.
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Critical to know
Market Trends
Thirroul's headline values — $2,012K to buy and $1,026PW to rent, a 2.65% gross yield. Over the past decade, prices have moved 76.12% and rents 67.97% — the Yield series shows whether that gap is widening (price outpacing rent, yield compressing) or closing.
$2,012K is today. The 10-year trajectory reveals whether that's the top of a run, the start of a new leg, or somewhere mid-cycle. Sign up to unlock the entire trend line.
$1,026PW today, with rent growth at (+12.28% YoY) compared to price growth (+6.65%). That spread determines yield is expanding or compressing across the next cycle. Sign up to unlock the entire trend line.
Where is Thirroul in its cycle - and is the 2.65% yield holding?
Cycle phase tells you whether you're buying near the bottom (room to run) or top (compression ahead). Yield trajectory tells you whether cashflow is durable or being eroded — the single most important question for a long-hold thesis.
Cycle Phase
Cycle Position
Yield Trajectory
Rent vs Price Spread
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Area Risks
Property data alone won't flag the structural risks that can erode a long-hold position. Bushfire overlays, flood-zone exposure, and economic concentration sit outside the price feed but determine whether your capital is insurable, defensible, and structurally protected. Unlock to see.
Are there hidden structural risks shaping Thirroul's long-hold story?
Beyond the headline price, Thirroul carries risk signals a median can't show — hazard exposure from bushfire and flood overlays, and how narrowly local employment leans on a handful of sectors (the concentration the EDI score quantifies). Together these separate insurable, defensible long-holds from those carrying tail-risk that never surfaces in the headline number.
MADI Risk
EDI Risk
Bushfire
Flood
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Critical to know
Supply & Demand
Thirroul's headline numbers show where the market is today. The two cards below answer where it's heading. Direction is what separates a buy from a wait.
Is housing supply tightening or building up?
Stock on Market is one number — the trend is what matters. SoM, inventory, building approvals and hold period together reveal whether the market is starving for stock (price pressure up) or quietly building a pipeline (pressure down).
Stock on Market
Inventory
Building Approvals
Hold Period
Is buyer and renter demand heating up or cooling off?
Vacancy is one signal — the real question is whether demand is still building or quietly peaking. Days on market, vacancy, search index and clearance rate are the four pulse-points — when they diverge, they signal a turning point.
Days on Market
Vacancy Rate
Search Index
Clearance Rate
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Fundamentals
Thirroul can look solid on the surface — but the three layers below separate markets that genuinely hold value from ones that only look like they do.
Is Thirroul genuinely stable - or just expensive?
IRSAD hints at affluence, but socio-economic strength alone doesn't guarantee resilience. Combined with the renter-to-owner balance and unit-to-house ratio, you get the three signals that separate a tightly-held submarket from one carrying hidden volatility.
IRSAD
Renter to Owner
Units to Houses
Where do Thirroul prices go over the next 12 months?
Today's headline price is just a snapshot. Projected ROI and the volatility index tell you whether to commit capital now, wait for a softer entry, or rotate into a steadie submarket.
Projected Annual ROI
Volatility Index
Can you actually buy into Thirroul - and exit cleanly?
Tightly-held areas reward long-hold investors but punish anyone who needs liquidity. Annual sales and rental volume reveal whether your capital can reposition — or sits structurally locked in.
Annual Sales Volume
Annual Rental Volume
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Important to know
Education & Infrastructure
Thirroul looks tightly-held and stable on the surface — but the three layers below separate areas that genuinely hold value from ones that only look like they do.
Does Thirroul's school catchment + infrastructure pipeline justify the price?
School ranks anchor family demand and tenant quality. The active infrastructure pipeline shifts a suburb's price ceiling over the next 5–10 years. Together they tell you whether Thirroul has structural support for the next leg of capital growth.
School Rank
Hospitals & Employment
Infrastructure Spend
Transport Projects
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Full HtAG Intelligence
Thirroul shows potential. The platform tells you whether it's the best fit for your portfolio.
Price and yield are only the surface. HtAG reads the forces underneath — supply tightening or loosening, demand heating or cooling, and the risks that move slowly but decide long-term growth. Together they show whether Thirroul has the structural support for its next leg — or whether the numbers are running ahead of the fundamentals.
The total adult population (15 years or older) of Thirroul 2515 NSW is 5,083, with a median age of 43. Of those, 53.92% are married, 9.86% are divorced or separated, 31.60% are single and 4.51% are widowed.
The average household size is 2.7 people per dwelling, and the median household monthly income is estimated to be $11,004. The median monthly mortgage repayment for households in this suburb is $2,600 which is 23.63% of their earnings.
Source: ABS Census Data (2021)