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Union St, Mosman NSW 2088

Street

Street Summary

Union St, Mosman NSW 2088 is a local road where 100% of properties are houses. 3 homes sit above the street; 9 homes sit level with the street. 12 homes are heritage-listed, 1 home has a flood overlay, and 11 homes are recommended for a flood check. There are insufficient recent house sales to calculate a reliable comparison against the suburb median, 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 Union St, Mosman NSW 2088 property market.

Houses vs Apartments12 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 Union 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-sideFlat
3 lots
9 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
12 houses affected
Bushfire
0 houses affected
Flood
1 houses affected
High voltage power line
0 houses affected

Street Sales - Houses

Actual house sales on Union 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$2.5M$5.0M$7.5M$10.0MOct 21June 23Feb 25Oct 26$4.9M · 2022$5.3M · 2023$5.9M · 2024$5.7M · 2025$5.2M · 2026$6.6M · 2021-10-26 · 10 UNION ST, MOSMAN NSW 2088$5.8M · 2025-04-10 · 9 UNION ST, MOSMAN NSW 2088
Turnover rate16.7%Past 5 years

PART 3
Apartments

Street Sales - Apartments

Actual apartment (unit) sales on Union 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 Union St, Mosman NSW 2088 : Street Profile & FAQs

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

There are insufficient recent house sales on Union 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 Union St?

There are no bushfire or high-voltage powerline overlays on Union St. Twelve properties are heritage-listed, meaning renovations, extensions, or exterior changes may require additional council approval. One property falls within a flood overlay, and 11 are recommended for a flood check. Zero properties fall under other flood classifications, indicating no flood risk identified or not mapped. 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.

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

3 homes sit above the street; 9 homes sit level with 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 Union St?

Union St is a local road. Local roads generally serve nearby residents rather than carrying through traffic.

Is Union St mostly houses or apartments?

There are 12 residential properties on Union St. The street is predominantly houses, with 100% of the residential stock classified as houses and 0% as apartments.

What are the major apartment developments on Union St?

No major apartment developments are recorded on Union St.

How many properties have sold on Union St?

Zero houses and zero apartments have sold on Union St in the past 12 months. The 5-year turnover rate for houses is 16.7%, representing the proportion of properties that changed ownership during the past five years. Turnover data for apartments is unavailable.

Is Union St a good street to buy property on?

Union St is a local road street consisting entirely of houses. It may be more aligned with buyers looking for detached houses who prefer residential streets without through traffic. The street features a mix of homes sitting above and level with the street, and twelve properties are heritage-listed, which may appeal to buyers interested in established character homes but who are comfortable with potential renovation restrictions.