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Thornleigh St, Thornleigh NSW 2120

Street

Street Summary

Thornleigh St, Thornleigh NSW 2120 sits 12.9% above the suburb house median. 16 homes sit above the street; 10 homes sit level with the street; 24 homes sit below the street. 17 homes are in a bushfire zone and 7 are recommended for a flood check. The street is 35.8% houses and 56% apartments. It is a local road. Major projects include 11 Thornleigh St (33 lots, 5 levels, 2017), 27 Thornleigh St (29 lots, 6 levels, 2019), and 5 Thornleigh St (22 lots, 5 levels, 2016).


PART 1
Street Profile

Property Type Mix

The mix of houses and apartments (units) that make up the Thornleigh St, Thornleigh NSW 2120 property market.

Houses vs Apartments159 total lots
35.8%
56%
8.2%
Houses (35.8%)
Apartments (56%)
Townhouses/Villas/Unclassified (8.2%)

PART 2
Houses

"Houses" in this report includes detached houses, duplexes, and terraces.

Land Topography

How house lots on Thornleigh St, Thornleigh NSW 2120 sit relative to street level — topography that affects drainage, flood risk, privacy, and build cost. Statistics are calculated from properties with available data.

High-side vs low-side house lots
High-sideFlatLow-side
16 lots
10 lots
24 lots
High-side (1m above)
Flat
Low-side (1m below)

Risks &Overlays

See which key planning overlays and environmental risks affect this street before you buy.

Heritage
0 houses affected
Bushfire
17 houses affected
Flood
0 houses affected
High voltage power line
0 houses affected

Street Sales - Houses

Actual house sales on Thornleigh St, Thornleigh NSW 2120 over the past 5 years, plotted against the Thornleigh NSW 2120 median house price trend over the same period.

Street sales vs suburb median
Street SalesSuburb Median Price
$0$1.3M$2.5M$3.8M$5.0MSept 21May 23Jan 25Sept 26$1.7M · 2022$1.8M · 2023$1.9M · 2024$1.9M · 2025$1.8M · 2026$1.6M · 2024-10-25 · 14 THORNLEIGH ST, THORNLEIGH NSW 2120$2.1M · 2021-10-30 · 30 THORNLEIGH ST, THORNLEIGH NSW 2120$2.1M · 2021-12-12 · 37 THORNLEIGH ST, THORNLEIGH NSW 2120$1.7M · 2025-10-18 · 38 THORNLEIGH ST, THORNLEIGH NSW 2120$1.7M · 2022-02-04 · 51 THORNLEIGH ST, THORNLEIGH NSW 2120$2.3M · 2024-03-28 · 54 THORNLEIGH ST, THORNLEIGH NSW 2120$1.6M · 2022-04-23 · 56 THORNLEIGH ST, THORNLEIGH NSW 2120$1.6M · 2025-12-13 · 58 THORNLEIGH ST, THORNLEIGH NSW 2120
Street price+13%vs suburb median
Turnover rate14%Past 5 years

PART 3
Apartments

Street Sales - Apartments

Actual apartment (unit) sales on Thornleigh St, Thornleigh NSW 2120 over the past 5 years, plotted against the Thornleigh NSW 2120 median apartment price trend over the same period.

Street sales vs suburb median
Street SalesSuburb Median Price
$0$500k$1.0M$1.5M$2.0MSept 21May 23Jan 25Sept 26$810k · 2022$700k · 2023$740k · 2024$787k · 2025$650k · 2026$650k · 2026-06-29 · 15/5 THORNLEIGH ST, THORNLEIGH NSW 2120$820k · 2024-07-08 · 2/5 THORNLEIGH ST, THORNLEIGH NSW 2120$800k · 2025-04-17 · 18/5 THORNLEIGH ST, THORNLEIGH NSW 2120$747k · 2022-10-22 · 8/5 THORNLEIGH ST, THORNLEIGH NSW 2120$1.3M · 2024-02-11 · 29/11 THORNLEIGH ST, THORNLEIGH NSW 2120$710k · 2022-12-22 · 13/11 THORNLEIGH ST, THORNLEIGH NSW 2120$855k · 2024-05-08 · 23/11 THORNLEIGH ST, THORNLEIGH NSW 2120$748k · 2025-06-22 · 23/11 THORNLEIGH ST, THORNLEIGH NSW 2120$700k · 2023-10-21 · 27/11 THORNLEIGH ST, THORNLEIGH NSW 2120$555k · 2022-09-25 · 8/11 THORNLEIGH ST, THORNLEIGH NSW 2120$770k · 2026-04-28 · 32/11 THORNLEIGH ST, THORNLEIGH NSW 2120$705k · 2022-07-21 · 28/11 THORNLEIGH ST, THORNLEIGH NSW 2120$800k · 2024-04-06 · 31/11 THORNLEIGH ST, THORNLEIGH NSW 2120$850k · 2025-11-03 · 8/27 THORNLEIGH ST, THORNLEIGH NSW 2120$855k · 2025-10-28 · 2/27 THORNLEIGH ST, THORNLEIGH NSW 2120$565k · 2024-10-31 · 7/27 THORNLEIGH ST, THORNLEIGH NSW 2120$800k · 2024-02-09 · 11/27 THORNLEIGH ST, THORNLEIGH NSW 2120$970k · 2025-08-19 · 27/27 THORNLEIGH ST, THORNLEIGH NSW 2120$540k · 2024-04-19 · 13/27 THORNLEIGH ST, THORNLEIGH NSW 2120$1M · 2024-02-20 · 9/27 THORNLEIGH ST, THORNLEIGH NSW 2120$895k · 2022-06-24 · 1/27 THORNLEIGH ST, THORNLEIGH NSW 2120$902k · 2021-09-28 · 3/27 THORNLEIGH ST, THORNLEIGH NSW 2120$870k · 2022-03-07 · 17/27 THORNLEIGH ST, THORNLEIGH NSW 2120$870k · 2026-05-04 · 17/27 THORNLEIGH ST, THORNLEIGH NSW 2120
Apartment sales5Past 12 months
Turnover rate25.8%Past 5 years

Largest Apartment Projects

The largest apartment projects on Thornleigh St, Thornleigh NSW 2120, ranked by number of lots.

1
11 THORNLEIGH ST, THORNLEIGH NSW 2120Small-Medium project (20-50 lots)
2
27 THORNLEIGH ST, THORNLEIGH NSW 2120Small-Medium project (20-50 lots)
3
5 THORNLEIGH ST, THORNLEIGH NSW 2120Small-Medium project (20-50 lots)

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Living in Thornleigh St, Thornleigh NSW 2120 : Street Profile & FAQs

Common questions about living on and buying property on Thornleigh St, Thornleigh NSW 2120 — lifestyle, transport, and the local housing market.

Note: Data is sourced from the Australian Bureau of Statistics (ABS) 2021 Census data and knest.ai internal statistical data.

Is Thornleigh St an expensive or affordable street relative to Thornleigh?

House prices on Thornleigh St are 12.9% above the Thornleigh suburb house median.

What are the risk and overlay factors on Thornleigh St?

There are 17 properties in a bushfire zone, 0 heritage listings, 0 flood overlays, 7 flood checks recommended, 50 other flood classifications, and 0 high-voltage properties. Heritage listings typically restrict exterior changes, while flood overlays or recommended checks require reviewing council mapping, flood reports, and insurance costs before purchasing. The 50 other flood classifications indicate no flood risk identified or not mapped.

Are properties on Thornleigh St mostly on high, level or low ground?

16 homes sit above the street; 10 homes sit level with the street; 24 homes sit below the street. Different site heights can influence site characteristics, so buyers should assess the specific property rather than relying on the street average.

What type of road is Thornleigh St?

Thornleigh St is a local road.

Is Thornleigh St mostly houses or apartments?

There are 159 residential properties on the street, with 35.8% houses and 56% apartments.

What are the major apartment developments on Thornleigh St?

Major developments include 11 Thornleigh St (33 lots, 5 levels, built 2017), 27 Thornleigh St (29 lots, 6 levels, built 2019), and 5 Thornleigh St (22 lots, 5 levels, built 2016). These developments contribute to the street's apartment presence or higher-density residential character.

How many properties have sold on Thornleigh St?

2 houses and 5 apartments have sold in the past 12 months. The 5-year turnover rate is 14% for houses and 27% for apartments. Turnover measures the proportion of properties that changed ownership during the past five years.

Is Thornleigh St a good street to buy property on?

Thornleigh St aligns with buyers seeking detached houses, apartment buyers, or those preferring local-road residential streets. Buyers should consider the 12.9% premium relative to the suburb median, the 17 bushfire-zone properties, and the 14% house turnover rate when evaluating their options.