Kellyville (2155) sits approximately 36 kilometres north-west of the Sydney CBD within The Hills Shire, a council area consistently ranked among the most socioeconomically advantaged in New South Wales. Its SEIFA IRSAD score of 1146 places it in decile 10 of 10 nationally and at the 93rd state percentile, meaning it sits well above the national mean of 1000. That reading reflects a resident base characterised by high household incomes, professional occupations, and strong educational attainment. For investors, the score anchors three of PropertyRanker's twelve criteria at a favourable level, but it is the listing-level signals that will determine whether any specific property here is worth pursuing.
ABS 2021 IRSAD release. Score 1146 (national mean = 1000).
A SEIFA IRSAD score of 1146 is a meaningful macro signal. It tells PropertyRanker that Kellyville's economic base is robust, that the area is unlikely to face the demand erosion associated with structurally disadvantaged postcodes, and that hazard-risk and entry-point-risk criteria start from a position of relative strength. The Hills Shire as a whole has attracted sustained owner-occupier demand from dual-income professional families, and Kellyville's housing stock ranges from medium-density townhouses near the Kellyville Village retail strip to larger detached homes on generous lots in estates such as Duncraig and Highlands. That diversity matters for investors because yield profiles vary considerably across the same postcode. The suburb is car-dependent for most daily errands, and while the Sydney Metro Northwest line at nearby Rouse Hill has improved CBD access, walkability scores remain low. Infrastructure quality and school catchments are genuine demand drivers here, and they support the owner-occupier premium that tends to compress gross yields in decile-10 suburbs. Investors considering Kellyville should therefore calibrate strategy expectations carefully. The SEIFA reading is consistent with a Capital Growth strategy profile, where PropertyRanker anchors gross yield expectations around 3.5 percent, rather than a High Yield or Regional strategy that targets 6 to 7 percent. A Balanced strategy at around 5 percent gross yield is possible for certain property types, particularly townhouses and units, but that needs to be confirmed at the listing level rather than assumed from the postcode. The SEIFA score alone does not make a listing a buy or a pass. A poorly priced house on a flood-affected lot, or a unit in a strata scheme with deferred maintenance, can score poorly inside the same advantaged postcode frame.
Kellyville NSW 2155 is recording a median house sale price of approximately $1,970,000 to $2,000,000 as of mid-2026, with annual price growth ranging from +2.7% to +3.68% depending on the source (CoreLogic via yourinvestmentpropertymag.com.au and propertyvalue.com.au). There were around 314-315 house sales in the past 12 months, and vendor discounting sits at -3.6% with an average of 31-32 days on market, pointing to a steady but modestly tightening market environment.
Anchor points pulled per refresh from publicly available suburb profiles. Approximate; not a moving average.
Vacancy sits at 2.28% with balanced leasing conditions, days on market are moderate at 31-32 days with no clear directional shift, and vendor discounting of -3.6% reflects a balanced rather than strongly competitive market.
Sources: Kellyville, NSW 2155: Suburb Profile & Property Report | YIP (CoreLogic data) (2026-05-01); Kellyville House Prices & Property Trends | propertyvalue.com.au (Cotality/CoreLogic) (2026-01-01); Kellyville Property Market and Trends | OpenAgent (2026-07-03); Kellyville Ridge NSW 2155: Property & Real Estate Market | irvingg.com.au (2026-06-01); Kellyville, NSW 2155 Property Market and House Prices 2026 | HtAG Analytics (2026-08-01) · Refreshed 22 Sep 2026
PropertyRanker scores any Australian property against 12 criteria across three pillars: Growth, Cashflow, and Risk. SEIFA is a primary signal for economic strength and a supporting one for entry-price risk. It also informs the crime side of hazard risk, though physical overlays like flood, bushfire and coastal exposure, and recorded crime data where available, take priority there. The decile of 10 shown above gives a listing in Kellyville a stronger starting line on economic strength than the national median postcode, and a softer one on entry-price risk, since more advantaged postcodes usually carry higher entry prices.
On top of that, PropertyRanker chooses one of four strategies (Balanced, Growth, Yield, Regional) and applies a per-strategy yield anchor. The anchors are 3.5% for Growth, 5% for Balanced, 6% for Yield, and 7% for Regional. A postcode at this level of relative advantage tends to suit the Growth (3.5% anchor) and Balanced (5% anchor) strategies more readily than Yield (6%) or Regional (7%), because a higher entry price compresses the gross yield a listing can reach without a specific value-add.
Read the scoring guide for the full criteria list and how the verdict thresholds work.
SEIFA is a postcode-level read. The fastest sanity check on any single decile reading is to compare it against the suburbs that surround it.
Before drawing any conclusion from the SEIFA reading, an investor should confirm several listing-level factors that a postcode score cannot see. First, check the SQM Research vacancy rate for 2155 at the time of assessment; even high-income suburbs can carry pockets of oversupply in specific dwelling types. Second, review the flood and bushfire overlay maps via the NSW Planning Portal, as parts of Kellyville sit adjacent to creek corridors and natural bushland that carry overlay risk. Third, for any strata or community title property, obtain the most recent strata inspection report to assess body corporate reserves and any outstanding special levies. Fourth, price the listing against recent comparable sales in the same estate or street, not the broader suburb median, because internal variation across Kellyville's diverse housing stock is significant. Finally, score the specific listing in PropertyRanker to get a verdict that weighs all twelve criteria together, including the live vacancy data, overlay status, and comparable sales pricing that a postcode-level SEIFA reading cannot capture.
Kellyville's SEIFA IRSAD score of 1146 (decile 10 nationally, 93rd state percentile) signals a structurally strong economic base, which supports PropertyRanker's economic_strength, hazard_risk, and entry_point_risk criteria at a favourable level. However, a strong SEIFA reading does not by itself make a suburb suitable for every investor or every strategy. The suburb's high owner-occupier demand and professional demographic tend to compress gross yields, so investors targeting income-heavy returns should verify whether specific listings meet their yield threshold before proceeding.
The suburb's decile-10 SEIFA profile and high owner-occupier demand are most consistent with PropertyRanker's Capital Growth strategy, which anchors gross yield expectations around 3.5 percent. A Balanced strategy at around 5 percent gross yield may be achievable for certain townhouse or unit listings, but that needs to be confirmed at the listing level. High Yield (around 6 percent) and Regional (around 7 percent) strategies are unlikely to be supported by the current pricing environment in a suburb of this socioeconomic standing, though investors should score individual listings to verify.
The primary risks to assess at the listing level include flood and creek-corridor overlays in parts of the suburb, car-dependency that limits the tenant pool for households without vehicles, and yield compression driven by the suburb's premium pricing relative to rental returns. Build quality is also worth scrutinising, as commentary on newer estates in the Hills District has noted high house-to-land ratios and variable construction standards. Investors should run a full PropertyRanker score on any specific listing to surface overlay, vacancy, and comparable-sales signals that the postcode-level SEIFA reading cannot see.
PropertyRanker uses the SEIFA IRSAD reading as a primary input for three of its twelve scoring criteria: economic_strength, hazard_risk, and entry_point_risk. Kellyville's score of 1146 (decile 10, national mean 1000) sets those three criteria at a favourable baseline. The remaining nine criteria are assessed at the listing level and include signals such as current SQM vacancy rates, flood and planning overlays, strata health, and pricing against recent comparable sales. The final score reflects all twelve criteria together, not the SEIFA reading alone.
Kellyville, Castle Hill (2154), and Bella Vista (2153) all sit within the broader Hills District corridor and share a high-income demographic profile, so their macro SEIFA signals are broadly similar. The key differences for investors lie at the listing level: dwelling mix, proximity to the Sydney Metro Northwest line, and specific planning overlays vary across these suburbs. Investors should score individual listings in each suburb through PropertyRanker rather than treating the corridor as uniform, because yield outcomes and overlay risk can differ meaningfully even between adjacent postcodes.
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