Thornleigh (2120) median house price & property market
In Thornleigh (2120), the median house price is $1,850,000 and the median unit price is $752,500. Prices have grown 4.4% a year over the last five years. Below: price history, sales volume, listing age and demographics for Thornleigh, in the Hornsby LGA — built on NSW Valuer General bulk sales data and SQM Research listings.
Data updated 2026-10-19.
Quarterly medians from NSW Valuer General sales. Latest point is the trailing 12-month median, as in the terminal.
Thornleigh median house and unit prices
- Median house price
- $1,850,000 (85 sales)
- Median unit price
- $752,500 (48 sales)
- Median all dwellings
- $1,630,000 (133 sales)
Thornleigh price growth (CAGR)
- 1-year CAGR
- 1.2%
- 3-year CAGR
- 0.6%
- 5-year CAGR
- 4.4%
- 10-year CAGR
- 4.3%
Thornleigh market activity
- Annual sales (last 12mo)
- 133
- Annual sales (5y avg)
- 143
- Median listing age
- 22 days
Thornleigh demographics & location
- Population (ABS 2021)
- 8,898
- Population growth 2016-21
- 6.4%
- Median age
- 40
- Median weekly household income
- $2,681
- Median weekly rent
- $530
- Owner-occupier
- 62%
- Rented
- 38%
- Dwelling mix (house / townhouse / unit)
- 75% / 16% / 9%
- SEIFA decile (10 = highest)
- 10
- Distance to Sydney CBD
- 20.0 km
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Other suburbs in Hornsby
Frequently asked
What is the median house price in Thornleigh?
The median house price in Thornleigh 2120 is $1,850,000, the median of 85 NSW Valuer General house sales in the 12 months to August 2026.
What is the median unit price in Thornleigh?
The median unit price in Thornleigh 2120 is $752,500, the median of 48 unit sales in the 12 months to August 2026.
How much has property grown in Thornleigh over 5 years?
Compound annual growth (CAGR) for Thornleigh over the last 5 years is 4.4%.
How many properties sell in Thornleigh per year?
Around 133 properties sold in Thornleigh 2120 in the last 12 months.
What is the population of Thornleigh?
Thornleigh 2120 has a population of 8,898 (ABS Census 2021).
How long do properties take to sell in Thornleigh?
The median listing age (a proxy for days on market) in Thornleigh 2120 is approximately 22 days, from SQM Research listings data.
Methodology
Medians computed from NSW Valuer General bulk sales data using nearest-month estimation with 3-month smoothing and 3× outlier rejection. CAGRs computed from trailing 12-month medians at each anchor point. The trailing 1–3 months of data are filtered when sale counts fall below typical volumes (settlement-lag handling). Listing age is derived from SQM Research bucketed listing-age data using midpoint medians. Demographics: ABS Census 2021. SEIFA: ABS SEIFA 2021. Full methodology →