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Illawarra St, Mosman NSW 2088

Street

Street Summary

Illawarra St, Mosman NSW 2088 is a local road dominated by houses. 4 homes sit above the street; 8 homes sit level with the street; 2 homes sit below the street. Two homes are heritage-listed and two have a flood overlay, while 12 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 Illawarra St, Mosman NSW 2088 property market.

Houses vs Apartments15 total lots
93.3%
6.7%
Houses (93.3%)
Apartments (0%)
Townhouses/Villas/Unclassified (6.7%)

PART 2
Houses

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

Land Topography

How house lots on Illawarra St, 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-sideFlatLow-side
4 lots
8 lots
2 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
2 houses affected
Bushfire
0 houses affected
Flood
2 houses affected
High voltage power line
0 houses affected

Street Sales - Houses

Actual house sales on Illawarra St, 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$20.0MOct 21June 23Feb 25Oct 26$4.9M · 2022$5.3M · 2023$5.9M · 2024$5.7M · 2025$5.2M · 2026$5.3M · 2021-12-22 · 10 ILLAWARRA ST, MOSMAN NSW 2088$4.6M · 2026-03-27 · 14 ILLAWARRA ST, MOSMAN NSW 2088$12.3M · 2023-06-22 · 18 ILLAWARRA ST, MOSMAN NSW 2088$6.4M · 2024-03-21 · 5 ILLAWARRA ST, MOSMAN NSW 2088
Turnover rate28.6%Past 5 years

PART 3
Apartments

Street Sales - Apartments

Actual apartment (unit) sales on Illawarra St, 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$2.0MOct 21June 23Feb 25Oct 26$1.1M · 2022$1.2M · 2023$1.3M · 2024$1.3M · 2025$1.3M · 2026
Apartment sales0Past 12 months
Turnover rate0%Past 5 years

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Living in Illawarra St, Mosman NSW 2088 : Street Profile & FAQs

Common questions about living on and buying property on Illawarra St, 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 Illawarra St an expensive or affordable street relative to Mosman?

There are insufficient recent house sales on Illawarra St to calculate a reliable premium or discount against the Mosman 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 Illawarra St?

There are no bushfire or high-voltage powerline overlays on Illawarra St. Two properties are heritage-listed, meaning renovations or exterior changes may require additional council approval. Two properties fall within a flood overlay, 12 are recommended for a flood check, and zero 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 Illawarra St mostly on high, level or low ground?

4 homes sit above the street; 8 homes sit level with the street; 2 homes sit below the street.

What type of road is Illawarra St?

Illawarra St is a local road. Local roads generally serve nearby residents and connect directly to collector or arterial roads, rather than carrying significant through traffic.

Is Illawarra St mostly houses or apartments?

Illawarra St has 15 residential properties. Houses make up 93.3% of the street, while apartments make up 0%. The street is predominantly houses.

What are the major apartment developments on Illawarra St?

No major apartment developments are recorded on Illawarra St.

How many properties have sold on Illawarra St?

1 house sold in the past 12 months, while 0 apartments sold. The 5-year turnover rate for houses is 28.6%, meaning 28.6% of the houses changed ownership during the past five years. Apartment turnover data is unavailable.

Is Illawarra St a good street to buy property on?

Illawarra St is a local road with a predominantly detached housing stock (93.3%). It features a mix of homes sitting above, level with, and below the street. Buyers seeking detached houses on a quiet local road may find it suitable, though there are no major apartment developments and insufficient recent sales to benchmark pricing against the suburb.