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Sirius Ave, Mosman NSW 2088

Street

Street Summary

Living on Sirius Ave, Mosman NSW 2088, homes sit at the suburb's house median. 8 homes sit above the street; 7 homes sit below the street. 1 home is in the flood overlay and 14 are recommended for a flood check. The street is 75% houses. With a 46.7% house turnover over 5 years, 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 Sirius Ave, Mosman NSW 2088 property market.

Houses vs Apartments20 total lots
75%
25%
Houses (75%)
Apartments (0%)
Townhouses/Villas/Unclassified (25%)

PART 2
Houses

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

Land Topography

How house lots on Sirius Ave, Mosman NSW 2088 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-sideLow-side
8 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
1 houses affected
High voltage power line
0 houses affected

Street Sales - Houses

Actual house sales on Sirius Ave, Mosman NSW 2088 over the past 5 years, plotted against the Mosman NSW 2088 median house price trend over the same period.

Street sales vs suburb median
Street SalesSuburb Median Price
$0$5.0M$10.0M$15.0M$20.0MSept 21May 23Jan 25Sept 26$4.8M · 2022$5.3M · 2023$5.9M · 2024$5.7M · 2025$5.2M · 2026$6.4M · 2021-09-29 · 13 SIRIUS AVE, MOSMAN NSW 2088$5.7M · 2023-11-11 · 14 SIRIUS AVE, MOSMAN NSW 2088$10.5M · 2021-09-17 · 2 SIRIUS AVE, MOSMAN NSW 2088$12.2M · 2022-11-21 · 2 SIRIUS AVE, MOSMAN NSW 2088$7.4M · 2022-08-29 · 3 SIRIUS AVE, MOSMAN NSW 2088$3.1M · 2022-04-22 · 9 SIRIUS AVE, MOSMAN NSW 2088$3.5M · 2023-11-21 · 9 SIRIUS AVE, MOSMAN NSW 2088
Street price+5%vs suburb median
Turnover rate46.7%Past 5 years

PART 3
Apartments

Street Sales - Apartments

Actual apartment (unit) sales on Sirius Ave, Mosman NSW 2088 over the past 5 years, plotted against the Mosman NSW 2088 median apartment price trend over the same period.

Street sales vs suburb median
Suburb Median Price
$0$500k$1.0M$1.5M$2.0MSept 21May 23Jan 25Sept 26$1.1M · 2022$1.2M · 2023$1.3M · 2024$1.3M · 2025$1.2M · 2026
Apartment sales0Past 12 months
Turnover rate0%Past 5 years

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Living in Sirius Ave, Mosman NSW 2088 : Street Profile & FAQs

Common questions about living on and buying property on Sirius Ave, Mosman NSW 2088 — 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 Sirius Ave an expensive or affordable street relative to Mosman?

House prices on Sirius Ave sit 4.97% above the Mosman suburb house median.

What are the risk and overlay factors on Sirius Ave?

There is no bushfire, heritage, or high-voltage overlay on Sirius Ave. One property falls within a flood overlay, 14 are recommended for a flood check, and 0 fall under other flood classifications. A flood overlay or recommended flood check does not necessarily mean a property floods, but it is worth reviewing council mapping, flood reports and insurance costs before purchasing. Flood Check Recommended = recommended for further assessment. flood_other_cnt (other flood classification) means the property has been reviewed and found to have no flood risk, or has not been assessed/mapped for flood — it does not indicate a flood risk. Frame it neutrally as "no flood risk identified or not mapped," never as a risk factor.

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

8 homes sit above the street; 7 homes sit below the street.

What type of road is Sirius Ave?

Sirius Ave is a local road.

Is Sirius Ave mostly houses or apartments?

There are 20 residential properties on Sirius Ave, with 75% being houses and 0% being apartments.

What are the major apartment developments on Sirius Ave?

No major apartment developments are recorded on Sirius Ave.

How many properties have sold on Sirius Ave?

No houses or apartments have sold on Sirius Ave in the past 12 months. The 5-year turnover rate for houses is 46.7%, while apartment turnover data is unavailable. Turnover measures the proportion of properties that changed ownership during the past five years.

Is Sirius Ave a good street to buy property on?

Buyers looking for detached houses on a local road may find Sirius Ave suitable, given its 75% house mix and local road classification. However, the absence of recent sales means buyers should compare recent sales of individual homes on the street against nearby comparable properties to gauge current market positioning. The street also features a mix of site heights and some flood-related overlays, so buyers should assess specific properties and review council mapping and insurance costs before purchasing.