William St, Rose Bay NSW 2029

Street

Street Summary

William St, Rose Bay NSW 2029 is a predominantly apartment-focused street with 90.4% of residential stock being units. Three homes sit level with the street, and 3 properties are subject to a flood overlay while 6 are recommended for a flood check. Major developments include 3 William St (20 lots, 3 levels, 2001), 33 William St (18 lots, 4 levels, 1966), and 39 William St (18 lots, 4 levels, 1966). There are insufficient recent house sales to calculate a reliable comparison against the suburb median.


PART 1
Street Profile

Property Type Mix

The mix of houses and apartments (units) that make up the William St, Rose Bay NSW 2029 property market.

Houses vs Apartments178 total lots
5.1%
90.4%
4.5%
Houses (5.1%)
Apartments (90.4%)
Townhouses/Villas/Unclassified (4.5%)

PART 2
Houses

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

Land Topography

How house lots on William St, Rose Bay NSW 2029 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
Flat
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
3 houses affected
High voltage power line
0 houses affected

Street Sales - Houses

Actual house sales on William St, Rose Bay NSW 2029 over the past 5 years, plotted against the Rose Bay NSW 2029 median house price trend over the same period.

Street sales vs suburb median
Street SalesSuburb Median Price
$0$2.5M$5.0M$7.5M$10.0MAug 21Apr 23Dec 24Aug 26$5.6M · 2022$5M · 2023$6.8M · 2024$4.4M · 2025$5M · 2023-05-06 · 41 WILLIAM ST, ROSE BAY NSW 2029$2.7M · 2023-01-24 · 23 WILLIAM ST, ROSE BAY NSW 2029
Turnover rate22.2%Past 5 years

PART 3
Apartments

Street Sales - Apartments

Actual apartment (unit) sales on William St, Rose Bay NSW 2029 over the past 5 years, plotted against the Rose Bay NSW 2029 median apartment price trend over the same period.

Street sales vs suburb median
Street SalesSuburb Median Price
$0$1.3M$2.5M$3.8M$5.0MAug 21Apr 23Dec 24Aug 26$1.5M · 2022$1.4M · 2023$1.6M · 2024$1.5M · 2025$1.5M · 2026$1.4M · 2025-09-26 · 6/29 WILLIAM ST, ROSE BAY NSW 2029$2.2M · 2024-05-19 · 1/3 WILLIAM ST, ROSE BAY NSW 2029$1.9M · 2025-04-04 · 10/3 WILLIAM ST, ROSE BAY NSW 2029$1.7M · 2022-10-10 · 11/3 WILLIAM ST, ROSE BAY NSW 2029$1.7M · 2022-03-07 · 15/3 WILLIAM ST, ROSE BAY NSW 2029$1.7M · 2026-05-19 · 16/3 WILLIAM ST, ROSE BAY NSW 2029$1.8M · 2024-03-28 · 17/3 WILLIAM ST, ROSE BAY NSW 2029$1.7M · 2024-07-17 · 7/3 WILLIAM ST, ROSE BAY NSW 2029$1.3M · 2023-10-18 · 2/31 WILLIAM ST, ROSE BAY NSW 2029$1.3M · 2023-09-29 · 4/1 WILLIAM ST, ROSE BAY NSW 2029$785k · 2025-02-04 · 6/1 WILLIAM ST, ROSE BAY NSW 2029$1.3M · 2024-03-29 · 8/1 WILLIAM ST, ROSE BAY NSW 2029$1.6M · 2026-03-02 · 10/27 WILLIAM ST, ROSE BAY NSW 2029$1.6M · 2021-08-19 · 11/27 WILLIAM ST, ROSE BAY NSW 2029$1.6M · 2026-02-02 · 6/27 WILLIAM ST, ROSE BAY NSW 2029$1.5M · 2024-05-21 · 6/39 WILLIAM ST, ROSE BAY NSW 2029$1.3M · 2023-10-31 · 1/9 WILLIAM ST, ROSE BAY NSW 2029$1.3M · 2024-06-02 · 8/9 WILLIAM ST, ROSE BAY NSW 2029$1.2M · 2025-12-10 · 2/1 WILLIAM ST, ROSE BAY NSW 2029$1.7M · 2022-10-12 · 1/21 WILLIAM ST, ROSE BAY NSW 2029$1.6M · 2021-08-31 · 2/21 WILLIAM ST, ROSE BAY NSW 2029$1.5M · 2023-04-26 · 6/21 WILLIAM ST, ROSE BAY NSW 2029$630k · 2022-12-06 · 2/33 WILLIAM ST, ROSE BAY NSW 2029$1.3M · 2026-03-16 · 1/33 WILLIAM ST, ROSE BAY NSW 2029$1.1M · 2022-09-16 · 5/37 WILLIAM ST, ROSE BAY NSW 2029$1.2M · 2022-12-06 · 16/33 WILLIAM ST, ROSE BAY NSW 2029$1M · 2024-11-20 · 3/37 WILLIAM ST, ROSE BAY NSW 2029$1.3M · 2025-03-27 · 4/33 WILLIAM ST, ROSE BAY NSW 2029$742k · 2023-09-29 · 8/33 WILLIAM ST, ROSE BAY NSW 2029$1.2M · 2022-06-15 · 10/33 WILLIAM ST, ROSE BAY NSW 2029$670k · 2024-03-20 · 11/33 WILLIAM ST, ROSE BAY NSW 2029$725k · 2025-02-20 · 17/33 WILLIAM ST, ROSE BAY NSW 2029$1.1M · 2022-03-26 · 2/37 WILLIAM ST, ROSE BAY NSW 2029
Apartment sales6Past 12 months
Turnover rate20.5%Past 5 years

Largest Apartment Projects

The largest apartment projects on William St, Rose Bay NSW 2029, ranked by number of lots.

1
3 WILLIAM ST, ROSE BAY NSW 2029Small-Medium project (20-50 lots)
2
33 WILLIAM ST, ROSE BAY NSW 2029Small project (<20 lots)
3
39 WILLIAM ST, ROSE BAY NSW 2029Small 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 William St, Rose Bay NSW 2029 : Street Profile & FAQs

Common questions about living on and buying property on William St, Rose Bay NSW 2029 — 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 William St an expensive or affordable street relative to Rose Bay?

There are insufficient recent house sales on William St to calculate a reliable premium or discount against the Rose Bay 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 William St?

There are no bushfire, heritage, or high-voltage overlays on William St. Three properties fall within a flood overlay, and six are recommended for a flood check. The remaining properties have no flood risk identified or are 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 William St mostly on high, level or low ground?

3 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 William St?

William St is a local road. Local roads generally serve nearby residents and connect to larger collector or arterial roads. Buyers should note that local roads typically experience less through traffic than major roads, though specific traffic levels or noise conditions depend on individual property positioning.

Is William St mostly houses or apartments?

William St has 178 residential properties, with 90.4% being apartments and 5.1% being houses. The street is predominantly apartments.

What are the major apartment developments on William St?

The major apartment developments on William St include 3 William St with 20 lots across 3 levels built in 2001, 33 William St with 18 lots across 4 levels built in 1966, and 39 William St with 18 lots across 4 levels built in 1966. These developments contribute to the street's apartment presence or higher-density residential character.

How many properties have sold on William St?

Six apartments sold on William St in the past 12 months. The 5-year turnover rate for apartments is 20.5%, while the turnover rate for houses is 22.2%. Turnover measures the proportion of properties that changed ownership during the past five years.

Is William St a good street to buy property on?

William St is a local road with 178 residential properties, predominantly apartments (90.4%). It has no bushfire, heritage, or high-voltage overlays, though three properties fall within a flood overlay and six are recommended for a flood check. Three homes sit level with the street. Six apartments sold in the past 12 months, with a 5-year turnover rate of 20.5% for apartments and 22.2% for houses. Buyers looking for detached houses may find limited options, while apartment buyers will find a higher-density residential character.