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Cynthia Ave, Castle Hill NSW 2154

Street

Street Summary

Cynthia Ave, Castle Hill NSW 2154 is a local road where 100% of the 21 residential properties are houses. 11 homes sit above the street; 3 homes sit level with the street; 7 homes sit below the street. 18 homes are near high-voltage powerlines. 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 Cynthia Ave, Castle Hill NSW 2154 property market.

Houses vs Apartments21 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 Cynthia Ave, Castle Hill NSW 2154 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
11 lots
3 lots
7 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
18 houses affected

Street Sales - Houses

Actual house sales on Cynthia Ave, Castle Hill NSW 2154 over the past 5 years, plotted against the Castle Hill NSW 2154 median house price trend over the same period.

Street sales vs suburb median
Street SalesSuburb Median Price
$0$1.3M$2.5M$3.8M$5.0MOct 21June 23Feb 25Oct 26$2.1M · 2022$2.3M · 2023$2.5M · 2024$2.5M · 2025$2.5M · 2026$2.4M · 2023-09-05 · 10 CYNTHIA AVE, CASTLE HILL NSW 2154$1.4M · 2022-05-27 · 13 CYNTHIA AVE, CASTLE HILL NSW 2154$2.8M · 2025-12-02 · 15 CYNTHIA AVE, CASTLE HILL NSW 2154$2.4M · 2023-05-20 · 9 CYNTHIA AVE, CASTLE HILL NSW 2154$2.5M · 2024-03-14 · 3 CYNTHIA AVE, CASTLE HILL NSW 2154
Turnover rate23.8%Past 5 years

PART 3
Apartments

Street Sales - Apartments

Actual apartment (unit) sales on Cynthia Ave, Castle Hill NSW 2154 over the past 5 years, plotted against the Castle Hill NSW 2154 median apartment price trend over the same period.

Street sales vs suburb median
Suburb Median Price
$0$250k$500k$750k$1.0MOct 21June 23Feb 25Oct 26$880k · 2022$930k · 2023$930k · 2024$963k · 2025$971k · 2026
Apartment sales0Past 12 months
Turnover rate0%Past 5 years

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Living in Cynthia Ave, Castle Hill NSW 2154 : Street Profile & FAQs

Common questions about living on and buying property on Cynthia Ave, Castle Hill NSW 2154 — 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 Cynthia Ave an expensive or affordable street relative to Castle Hill?

There are insufficient recent house sales on Cynthia Ave to calculate a reliable premium or discount against the Castle Hill 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 Cynthia Ave?

There are no bushfire, heritage, or flood overlay classifications on the street. However, 21 properties fall under other flood classifications, which means no flood risk has been identified or the property has not been mapped for flood. Additionally, 18 homes are located near high-voltage powerlines. Buyers should review council mapping and insurance costs before purchasing.

Are properties on Cynthia Ave mostly on high, level or low ground?

11 homes sit above the street; 3 homes sit level with the street; 7 homes sit below the street. Different site heights relative to the street can influence site characteristics, but buyers should assess the specific property rather than relying on the street average.

What type of road is Cynthia Ave?

Cynthia Ave is a local road. Local roads generally serve nearby residents and connect to larger collector or arterial roads. Buyers should consider that local roads typically carry less through traffic than major roads, though actual traffic levels and noise depend on individual property positioning.

Is Cynthia Ave mostly houses or apartments?

There are 21 residential properties on the street. Houses make up 100% of the residential stock, while apartments make up 0%. The street is predominantly houses.

What are the major apartment developments on Cynthia Ave?

No major apartment developments are recorded on Cynthia Ave.

How many properties have sold on Cynthia Ave?

Zero houses and zero apartments have sold in the past 12 months. The 5-year turnover rate for houses is 19%, representing the proportion of properties that changed ownership during the past five years. Apartment turnover data is unavailable.

Is Cynthia Ave a good street to buy property on?

Cynthia Ave is a local road with 100% houses, making it suitable for buyers preferring detached homes on quiet residential streets. The mix of homes above, level with, and below the street offers varied site heights. Buyers should note the proximity to high-voltage powerlines and the lack of recent sales data when evaluating the street.