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Cassia St, Dee Why NSW 2099

Street

Street Summary

Cassia St, Dee Why NSW 2099 is a local road where 21% of residences are houses and 77% are apartments. 19 homes sit above the street; 15 homes sit level with the street; 3 homes sit below 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. Notable apartment projects include 44 Cassia St (26 lots, 3 levels, 1994), 32 Cassia St (15 lots, 3 levels, 1989), and 52 Cassia St (12 lots, 4 levels, 1968).


PART 1
Street Profile

Property Type Mix

The mix of houses and apartments (units) that make up the Cassia St, Dee Why NSW 2099 property market.

Houses vs Apartments192 total lots
21.4%
76.6%
2%
Houses (21.4%)
Apartments (76.6%)
Townhouses/Villas/Unclassified (2%)

PART 2
Houses

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

Land Topography

How house lots on Cassia St, Dee Why NSW 2099 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
19 lots
15 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 Cassia St, Dee Why NSW 2099 over the past 5 years, plotted against the Dee Why NSW 2099 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$2.5M · 2022$2.5M · 2023$2.9M · 2024$2.8M · 2025$2.4M · 2026$1.8M · 2021-10-30 · 2/66 CASSIA ST, DEE WHY NSW 2099$2.1M · 2022-04-08 · 1/68 CASSIA ST, DEE WHY NSW 2099$3.7M · 2024-08-30 · 72 CASSIA ST, DEE WHY NSW 2099$4.8M · 2023-11-08 · 79 CASSIA ST, DEE WHY NSW 2099$3.6M · 2022-02-11 · 80 CASSIA ST, DEE WHY NSW 2099$4.3M · 2023-06-27 · 83 CASSIA ST, DEE WHY NSW 2099
Turnover rate14.6%Past 5 years

PART 3
Apartments

Street Sales - Apartments

Actual apartment (unit) sales on Cassia St, Dee Why NSW 2099 over the past 5 years, plotted against the Dee Why NSW 2099 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$903k · 2022$885k · 2023$932k · 2024$1.1M · 2025$1.1M · 2026$1.2M · 2025-11-29 · 6/10 CASSIA ST, DEE WHY NSW 2099$1.3M · 2025-11-20 · 7/10 CASSIA ST, DEE WHY NSW 2099$1.2M · 2021-12-09 · 2/32 CASSIA ST, DEE WHY NSW 2099$975k · 2025-12-02 · 8/32 CASSIA ST, DEE WHY NSW 2099$1.1M · 2024-02-08 · 10/32 CASSIA ST, DEE WHY NSW 2099$950k · 2023-07-21 · 3/40 CASSIA ST, DEE WHY NSW 2099$1.1M · 2022-04-07 · 4/40 CASSIA ST, DEE WHY NSW 2099$1.1M · 2024-08-17 · 8/40 CASSIA ST, DEE WHY NSW 2099$1.1M · 2024-08-01 · 5/40 CASSIA ST, DEE WHY NSW 2099$1M · 2023-08-01 · 2/40 CASSIA ST, DEE WHY NSW 2099$805k · 2021-10-20 · 7/52 CASSIA ST, DEE WHY NSW 2099$1.1M · 2023-12-07 · 8/52 CASSIA ST, DEE WHY NSW 2099$1.1M · 2024-11-18 · 3/28 CASSIA ST, DEE WHY NSW 2099$830k · 2023-05-05 · 11/52 CASSIA ST, DEE WHY NSW 2099$1.6M · 2025-07-10 · 5/52 CASSIA ST, DEE WHY NSW 2099$1.7M · 2022-07-05 · 2/24 CASSIA ST, DEE WHY NSW 2099$1.7M · 2024-08-30 · 9/24 CASSIA ST, DEE WHY NSW 2099$1.4M · 2025-09-26 · 15/44 CASSIA ST, DEE WHY NSW 2099$1.3M · 2021-12-14 · 1/44 CASSIA ST, DEE WHY NSW 2099$998k · 2024-08-28 · 22/44 CASSIA ST, DEE WHY NSW 2099$830k · 2024-05-08 · 25/44 CASSIA ST, DEE WHY NSW 2099$935k · 2026-02-25 · 3/44 CASSIA ST, DEE WHY NSW 2099$1.1M · 2022-03-18 · 4/4 CASSIA ST, DEE WHY NSW 2099$1.4M · 2026-03-16 · 7/20 CASSIA ST, DEE WHY NSW 2099$1.5M · 2025-08-30 · 4/16 CASSIA ST, DEE WHY NSW 2099$1.2M · 2022-11-10 · 7/16 CASSIA ST, DEE WHY NSW 2099
Apartment sales9Past 12 months
Turnover rate17.7%Past 5 years

Largest Apartment Projects

The largest apartment projects on Cassia St, Dee Why NSW 2099, ranked by number of lots.

1
44 CASSIA ST, DEE WHY NSW 2099Small-Medium project (20-50 lots)
2
32 CASSIA ST, DEE WHY NSW 2099Small project (<20 lots)
3
52 CASSIA ST, DEE WHY NSW 2099Small project (<20 lots)

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Living in Cassia St, Dee Why NSW 2099 : Street Profile & FAQs

Common questions about living on and buying property on Cassia St, Dee Why NSW 2099 — 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 Cassia St an expensive or affordable street relative to Dee Why?

There are insufficient recent house sales on Cassia St to calculate a reliable premium or discount against the Dee Why 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 Cassia St?

There are no bushfire, heritage, flood overlay, or high-voltage overlays on Cassia St. However, 41 properties fall under other flood classifications, meaning no flood risk has been identified or the property has not been mapped. This does not indicate a flood risk, but reviewing council mapping and insurance costs before purchasing is still recommended.

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

19 homes sit above the street; 15 homes sit level with the street; 3 homes sit below the street. Different site heights relative to the street can influence site characteristics, but specific outcomes like views or drainage depend on the individual property. Buyers should assess the specific property rather than relying on the street average.

What type of road is Cassia St?

Cassia St is a local road. Local roads generally serve nearby residents rather than carrying significant through traffic. Because specific traffic and speed limit data are unavailable, the street is characterised primarily by its role in serving the local residential community.

Is Cassia St mostly houses or apartments?

Cassia St has 192 residential properties, with apartments making up 76.6% of the stock and houses accounting for 21.4%. This means the street is predominantly apartments, offering a higher-density residential environment compared to streets dominated by detached homes.

What are the major apartment developments on Cassia St?

The major apartment developments on Cassia St include 44 Cassia St (26 lots, 3 levels, built 1994), 32 Cassia St (15 lots, 3 levels, built 1989), and 52 Cassia St (12 lots, 4 levels, built 1968). These developments contribute to the street's apartment presence and higher-density residential character.

How many properties have sold on Cassia St?

9 apartments sold in the past 12 months, while no houses sold. The 5-year turnover rate for apartments is 18.4%, and for houses, it is 14.6%. Turnover measures the proportion of properties that changed ownership during the past five years.

Is Cassia St a good street to buy property on?

Cassia St is a local road with a predominantly apartment profile. It may be well-suited for apartment buyers seeking a local residential environment. Buyers looking for detached houses will find a smaller selection, as houses make up only 21.4% of the residential stock. The street offers a mix of site heights, with homes sitting above, level with, and below the street.