Get the app

Heydon St, Mosman NSW 2088

Street

Street Summary

Heydon St, Mosman NSW 2088 is a predominantly apartment-focused street where 116 residential properties include 10% houses and 72% apartments. 8 homes sit above the street; 2 homes sit level with the street; 1 homes sit below the street. One property is heritage-listed and 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. The street features apartment projects at 17 Heydon St (31 lots, 3 levels, 1986), 8 Heydon St (28 lots, 3 levels, 1991), and 33 Heydon St (12 lots, 4 levels, 1965).


PART 1
Street Profile

Property Type Mix

The mix of houses and apartments (units) that make up the Heydon St, Mosman NSW 2088 property market.

Houses vs Apartments116 total lots
11.2%
71.6%
17.2%
Houses (11.2%)
Apartments (71.6%)
Townhouses/Villas/Unclassified (17.2%)

PART 2
Houses

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

Land Topography

How house lots on Heydon 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
8 lots
3 lots
1 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
1 houses affected
Bushfire
0 houses affected
Flood
0 houses affected
High voltage power line
0 houses affected

Street Sales - Houses

Actual house sales on Heydon 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$4.7M · 2024-03-07 · 29 HEYDON ST, MOSMAN NSW 2088$1M · 2025-05-07 · 4/17 HEYDON ST, MOSMAN NSW 2088
Turnover rate23.1%Past 5 years

PART 3
Apartments

Street Sales - Apartments

Actual apartment (unit) sales on Heydon 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
Street SalesSuburb Median Price
$0$1.3M$2.5M$3.8M$5.0MOct 21June 23Feb 25Oct 26$1.1M · 2022$1.2M · 2023$1.3M · 2024$1.3M · 2025$1.3M · 2026$3.8M · 2025-07-26 · 2/8 HEYDON ST, MOSMAN NSW 2088$3.2M · 2024-03-27 · 18/8 HEYDON ST, MOSMAN NSW 2088$3.3M · 2024-06-21 · 17/8 HEYDON ST, MOSMAN NSW 2088$3.1M · 2023-10-19 · 16/8 HEYDON ST, MOSMAN NSW 2088$3.6M · 2025-11-28 · 14/8 HEYDON ST, MOSMAN NSW 2088$3M · 2025-06-25 · 10/8 HEYDON ST, MOSMAN NSW 2088$630k · 2022-06-30 · 7/33 HEYDON ST, MOSMAN NSW 2088$716k · 2025-08-08 · 7/33 HEYDON ST, MOSMAN NSW 2088$700k · 2023-09-16 · 4/33 HEYDON ST, MOSMAN NSW 2088$740k · 2023-03-13 · 8/31 HEYDON ST, MOSMAN NSW 2088$680k · 2022-06-02 · 7/31 HEYDON ST, MOSMAN NSW 2088$767k · 2025-08-01 · 7/31 HEYDON ST, MOSMAN NSW 2088$805k · 2026-02-11 · 4/31 HEYDON ST, MOSMAN NSW 2088$767k · 2024-05-28 · 12/31 HEYDON ST, MOSMAN NSW 2088$1.3M · 2022-09-21 · 3/17 HEYDON ST, MOSMAN NSW 2088$1.5M · 2025-09-24 · 29/17 HEYDON ST, MOSMAN NSW 2088$1.2M · 2022-12-05 · 28/17 HEYDON ST, MOSMAN NSW 2088$1.3M · 2025-07-02 · 25/17 HEYDON ST, MOSMAN NSW 2088$1.3M · 2026-02-01 · 25/17 HEYDON ST, MOSMAN NSW 2088$1.5M · 2025-03-06 · 24/17 HEYDON ST, MOSMAN NSW 2088$1.4M · 2025-05-28 · 2/17 HEYDON ST, MOSMAN NSW 2088$1.2M · 2024-03-18 · 18/17 HEYDON ST, MOSMAN NSW 2088$1.2M · 2023-03-17 · 17/17 HEYDON ST, MOSMAN NSW 2088$1.3M · 2025-06-04 · 17/17 HEYDON ST, MOSMAN NSW 2088$1.3M · 2025-03-24 · 13/17 HEYDON ST, MOSMAN NSW 2088$1.4M · 2026-06-04 · 13/17 HEYDON ST, MOSMAN NSW 2088$1.3M · 2022-07-19 · 11/17 HEYDON ST, MOSMAN NSW 2088$900k · 2021-10-19 · 10/17 HEYDON ST, MOSMAN NSW 2088$1.2M · 2024-05-21 · 1/17 HEYDON ST, MOSMAN NSW 2088$1.2M · 2022-12-16 · 19/17 HEYDON ST, MOSMAN NSW 2088$1.2M · 2024-12-19 · 19/17 HEYDON ST, MOSMAN NSW 2088$1.3M · 2025-06-17 · 19/17 HEYDON ST, MOSMAN NSW 2088$3M · 2023-06-01 · 9/8 HEYDON ST, MOSMAN NSW 2088$2.9M · 2025-02-25 · 5/8 HEYDON ST, MOSMAN NSW 2088
Apartment sales4Past 12 months
Turnover rate43.4%Past 5 years

Largest Apartment Projects

The largest apartment projects on Heydon St, Mosman NSW 2088, ranked by number of lots.

1
17 HEYDON ST, MOSMAN NSW 2088Small-Medium project (20-50 lots)
2
8 HEYDON ST, MOSMAN NSW 2088Small-Medium project (20-50 lots)
3
33 HEYDON ST, MOSMAN NSW 2088Small project (<20 lots)

Get the knest.ai app

Gain ultimate insights into any property

Buyer-focused property platform identifying risks, price estimates, 3D land maps and more to help you make smarter decisions — completely free.

Download on the App Store
5.0 rating
15k users

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

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

There are insufficient recent house sales on Heydon 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 Heydon St?

There is no bushfire or high-voltage powerline risk on Heydon St. One property is heritage-listed, meaning renovations or exterior changes may require additional council approval. Twelve homes are recommended for a flood check, while zero properties fall within a flood overlay and zero are classified under other flood categories. A recommended flood check means further assessment is advised, and a flood overlay does not necessarily mean a property floods, but reviewing council mapping and insurance costs is prudent.

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

8 homes sit above the street; 2 homes sit level with the street; 1 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 Heydon St?

Heydon St is a local road. Local roads generally serve nearby residents and connect local streets with larger roads. The street speed limit and the share of stock fronting this dominant road section are not available.

Is Heydon St mostly houses or apartments?

There are 116 residential properties on Heydon St. Houses make up 10.3% of the residential stock, while apartments make up 72.4%. The street is predominantly apartments.

What are the major apartment developments on Heydon St?

The major apartment developments on Heydon St are 17 Heydon St with 31 lots across 3 levels built in 1986, 8 Heydon St with 28 lots across 3 levels built in 1991, and 33 Heydon St with 12 lots across 4 levels built in 1965. These developments contribute to the street's higher-density residential character.

How many properties have sold on Heydon St?

Zero houses sold in the past 12 months, while 6 apartments sold. The 5-year turnover rate for houses is 8.3%, and the 5-year turnover rate for apartments is 44%. Turnover measures the proportion of properties that changed ownership during the past five years.

Is Heydon St a good street to buy property on?

Heydon St is a local road with a predominantly apartment presence. It features a small number of heritage-listed homes and a mix of site heights, with most homes sitting above the street. With 6 apartments sold in the past 12 months and a 44% 5-year turnover rate, the street offers activity for apartment buyers, while the single heritage-listed home presents renovation considerations.