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 northern Illawarra coast roughly ~70 km south of Sydney CBD, Thirroul is home to roughly 6,348 adults across 2,860 dwellings and shows a vacancy rate of 1.23%.
According to HtAG Analytics, Thirroul is exhibiting a balanced supply profile with resilient rental pressure. Stock on Market sits at 0.44% and Inventory at 3.38 months — slightly above the ~3‑month balanced threshold but inside the neutral band — driving +4.2% YoY price growth and +7.1% YoY rent growth.
What the market data is signalling
Thirroul shows stronger rental growth (+7.1% YoY) than price growth (+4.2% YoY), which points to tight rental demand even as capital gains continue at a moderate pace. The gross yield is 2.9%, which sits below the commonly recommended minimum of 3% and implies investor returns are driven more by capital appreciation than cashflow.
Supply-side indicators are largely neutral: vacancy is 1.23% and Stock on Market is 0.44%, while Inventory at 3.38 months sits just above the ~3‑month balance threshold. For a snapshot of where Thirroul sits on the broader market map see the Markets in the Moment (MiM™) heatmap.
Who lives in Thirroul — and why it matters for investors
Thirroul records an IRSAD of 1,099, indicating an above-average socio‑economic profile which typically correlates with lower volatility and stronger long-run capital resilience. The renter/owner split is 20.0% renters (neutral), so investor demand must be assessed alongside local owner‑occupier strength.
Higher IRSAD can support premium pricing but, paired with an affordability index of 72 years (stretched), it can also leave the market sensitive to changes in credit conditions — see the IRSAD Crossover study for how socio‑economic overlay affects growth patterns.
Why suburb-level data matters for Thirroul
Suburb-level metrics reflect the actual pocket you’ll buy into: Thirroul’s typical house price is $1,994,180, gross yield 2.9%, Stock on Market 0.44%, Inventory 3.38 months and median days on market 41 days. These figures are the right inputs for investment sizing and timing — council averages can blend very different precincts and mask opportunities or risks. Read more on why council vs suburb screening matters in our LGA vs Suburb research.
For a downloadable breakdown, view the full Thirroul NSW 2515 data guide.
What's behind the RCS™ score of 63
The HtAG RCS™ score of 63 bundles three independent dimensions — risk minimisation, capital‑growth potential and cashflow resilience — into one composite rating. Each sub‑score can tell a different story (for example, Thirroul’s rent growth supports cashflow resilience despite lower yield), so always read the breakdown to match market attributes to your strategy. Learn how the RCS™ is built.
To explore the full metric set, open Thirroul in HtAG Copilot.
Forward signals to watch
The vacancy rate — currently 1.23%: sustained sub‑1.5% vacancy over 12–24 months would compress rents further and favour investors focused on cashflow; a rising vacancy would signal cooling rental demand.
The building approvals ratio — currently 0.48%: this neutral reading suggests new supply is neither negligible nor excessive; a sustained rise above the neutral band would increase near‑term inventory and test price momentum.
The wider Sydney cycle phase: shifts in Sydney’s cycle can amplify local Thirroul momentum — a city‑wide downturn would likely temper capital growth here, while a Sydney upswing can turbo‑charge demand for premium coastal lifestyle suburbs.
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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Market Trends
Thirroul's headline values — $1,994K to buy and $1,112PW to rent, a 2.89% gross yield. Over the past decade, prices have moved 83.57% and rents 65.04% — the Yield series shows whether that gap is widening (price outpacing rent, yield compressing) or closing.
$1,994K 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.
$1,112PW today, with rent growth at (+7.12% YoY) compared to price growth (+4.17%). 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 2.89% 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)