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Sefton Rd, Thornleigh NSW 2120

Street

Street Summary

Sefton Rd, Thornleigh NSW 2120 is a collector road with a 60km/h speed limit. 6 homes sit level with the street; 15 homes sit below the street. 7 homes are in a bushfire zone, and 14 are recommended for a flood check. There are insufficient recent house sales to calculate a reliable comparison against the suburb, so buyers should compare recent sales of individual homes on the street against nearby comparable properties.


PART 1
Street Profile

Property Type Mix

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

Houses vs Apartments36 total lots
66.7%
33.3%
Houses (66.7%)
Apartments (0%)
Townhouses/Villas/Unclassified (33.3%)

Street Class & Speed Limit

The road classification and posted speed limit along Sefton Rd, Thornleigh NSW 2120. Road class and speed limit can each vary from section to section; the dominant setting along the street is shown here.

Dominant road class & speed limitCOLLECTOR ROAD · 60 km/h97.2% of properties front this section

PART 2
Houses

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

Land Topography

How house lots on Sefton Rd, 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
FlatLow-side
6 lots
15 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
7 houses affected
Flood
0 houses affected
High voltage power line
0 houses affected

Street Sales - Houses

Actual house sales on Sefton Rd, 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$500k$1.0M$1.5M$2.0MSept 21May 23Jan 25Sept 26$1.7M · 2022$1.8M · 2023$1.9M · 2024$1.9M · 2025$1.8M · 2026$1.7M · 2025-09-22 · 14B SEFTON RD, THORNLEIGH NSW 2120$1.9M · 2024-08-15 · 6 SEFTON RD, THORNLEIGH NSW 2120$1.7M · 2022-04-19 · 8A SEFTON RD, THORNLEIGH NSW 2120$1.8M · 2024-09-07 · 10A SEFTON RD, THORNLEIGH NSW 2120
Turnover rate16.7%Past 5 years

PART 3
Apartments

Street Sales - Apartments

Actual apartment (unit) sales on Sefton Rd, 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
Suburb Median Price
$0$250k$500k$750k$1.0MSept 21May 23Jan 25Sept 26$810k · 2022$700k · 2023$740k · 2024$787k · 2025$650k · 2026
Apartment sales0Past 12 months
Turnover rate0%Past 5 years

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Living in Sefton Rd, Thornleigh NSW 2120 : Street Profile & FAQs

Common questions about living on and buying property on Sefton Rd, 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 Sefton Rd an expensive or affordable street relative to Thornleigh?

There are insufficient recent house sales on Sefton Rd to calculate a reliable premium or discount against the Thornleigh average. Buyers should compare recent sales of individual homes on the street against nearby comparable properties to gauge current market positioning.

What are the risk and overlay factors on Sefton Rd?

Seven properties are in a bushfire zone, while none are heritage-listed. Fourteen homes are recommended for a flood check, ten fall under other flood classifications (no flood risk identified or not mapped), and zero fall within a flood overlay. High-voltage powerlines do not affect any homes on the street. A flood check recommendation means further assessment is advised, and a flood overlay does not necessarily mean a property floods, so reviewing council mapping and insurance costs is prudent.

Are properties on Sefton Rd mostly on high, level or low ground?

Six homes sit level with the street; 15 homes sit below the street. Different site heights relative to the street can influence site characteristics, but specific outcomes depend on the individual property. Buyers should assess the specific property rather than relying on the street average.

What type of road is Sefton Rd?

Sefton Rd is a collector road with a 60 km/h speed limit. Collector roads generally connect local streets with larger roads, and 97.2% of the residential properties on the street front this dominant road section. Buyers may find this road classification supports a steady flow of local traffic.

Is Sefton Rd mostly houses or apartments?

Sefton Rd has 36 residential properties, with 66.7% being houses and 0% being apartments. The street is predominantly houses, offering a residential character focused on detached homes, duplexes, and terraces rather than higher-density living.

What are the major apartment developments on Sefton Rd?

No major apartment developments are recorded on Sefton Rd. The residential character is driven by the 24 houses and duplexes that make up the majority of the street's housing stock.

How many properties have sold on Sefton Rd?

One house sold in the past 12 months, while no apartments were sold. The 5-year turnover rate for houses is 20.8%, representing the proportion of properties that changed ownership during the past five years. Apartment turnover data is unavailable.

Is Sefton Rd a good street to buy property on?

Sefton Rd is best suited for buyers looking for detached houses on a collector road. The street offers a mix of homes sitting level with or below the street, alongside specific risk overlays like bushfire zones and flood check recommendations. It is less suitable for apartment buyers or those seeking a quiet local road environment.