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Costain Pl, Seven Hills NSW 2147

Street

Street Summary

Costain Pl, Seven Hills NSW 2147 is a local road where 100% of properties are houses. 1 homes sit above the street; 3 homes sit level with the street. 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 Costain Pl, Seven Hills NSW 2147 property market.

Houses vs Apartments4 total lots
100%
Houses (100%)
Apartments (0%)
Townhouses/Villas/Unclassified (0%)

PART 2
Houses

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

Land Topography

How house lots on Costain Pl, Seven Hills NSW 2147 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-sideFlat
1 lots
3 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
0 houses affected
Flood
0 houses affected
High voltage power line
0 houses affected

Street Sales - Houses

Actual house sales on Costain Pl, Seven Hills NSW 2147 over the past 5 years, plotted against the Seven Hills NSW 2147 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$960k · 2022$1M · 2023$1.2M · 2024$1.3M · 2025$1.3M · 2026$1.5M · 2023-07-14 · 1A COSTAIN PL, SEVEN HILLS NSW 2147$1.2M · 2026-05-31 · 4 COSTAIN PL, SEVEN HILLS NSW 2147
Turnover rate50%Past 5 years

PART 3
Apartments

Street Sales - Apartments

Actual apartment (unit) sales on Costain Pl, Seven Hills NSW 2147 over the past 5 years, plotted against the Seven Hills NSW 2147 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$580k · 2022$613k · 2023$623k · 2024$625k · 2025
Apartment sales0Past 12 months
Turnover rate0%Past 5 years

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Living in Costain Pl, Seven Hills NSW 2147 : Street Profile & FAQs

Common questions about living on and buying property on Costain Pl, Seven Hills NSW 2147 — 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 Costain Pl an expensive or affordable street relative to Seven Hills?

There are insufficient recent house sales on Costain Pl to calculate a reliable premium or discount against the Seven Hills 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 Costain Pl?

There are no bushfire, heritage, or high-voltage overlays on Costain Pl. Four properties fall under other flood classifications, meaning no flood risk has been identified or the property has not been mapped for flood. While this does not indicate a flood risk, it is worth reviewing council mapping and insurance costs before purchasing.

Are properties on Costain Pl mostly on high, level or low ground?

1 homes sit above the street; 3 homes sit level with the street. Different site heights relative to the street can influence site characteristics, so buyers should assess the specific property rather than relying on the street average.

What type of road is Costain Pl?

Costain Pl is a local road. Local roads generally serve nearby residents and connect to larger collector or arterial roads. Because it is a local road, it primarily supports residential access rather than carrying through traffic.

Is Costain Pl mostly houses or apartments?

Costain Pl has 4 residential properties, and 100% are houses. There are no apartments on the street, making it a purely house-based residential street.

What are the major apartment developments on Costain Pl?

No major apartment developments are recorded on Costain Pl. The street consists entirely of individual house stock.

How many properties have sold on Costain Pl?

1 house has sold in the past 12 months, and 0 apartments have sold. The 5-year turnover rate for houses is 50%, meaning half of the houses on the street changed ownership during the past five years.

Is Costain Pl a good street to buy property on?

Costain Pl is a small, local road consisting entirely of houses. It is best suited for buyers looking for detached homes on a quiet residential street. The street has no apartment developments, and its local road hierarchy generally serves nearby residents rather than carrying through traffic.