12/28 William St, Double Bay NSW 2028
Double Bay Unit
Technical details
How this sale compares
The 2017 sale was 18% below the Double Bay median unit price for that year ($1,650,000 across 101 sales).
Since then the median unit price in Double Bay has risen 39%, from $1,650,000 in 2017 to $2,300,000 over the last 12 months (68 sales).
Double Bay medians use NSW Valuer General sales of $50,000 or more, leaving out part-interest transfers and contracts covering several properties, and need at least 10 sales in the period. See Double Bay sold prices by year.
Rent and yield
Units in postcode 2028 rented for a median $1,050 a week, from 331 bonds lodged Oct 2025 to Sep 2026.
Median weekly rents from residential rental bonds lodged with NSW Fair Trading, by postcode. This home's own rent may differ. See rents by bedrooms in Double Bay.
Planning controls
- Zone
- R3 Medium Density Residential
- Minimum lot size
- 700 m² For subdividing the whole site, not one unit
- Maximum building height
- 10.5 m
- Floor space ratio
- 1:1 Floor area allowed for each square metre of site
From the Woollahra Local Environmental Plan 2014 maps on the NSW Planning Portal, looked up at this address's map point on 22 Oct 2026. A control can cover only part of a site and plans change, so the council's planning certificate is the formal record. Planning data from the NSW Department of Planning, Housing and Infrastructure, CC BY 4.0.
Related sales
Sale history
Sold is the contract date, when the sale was agreed. Settled is the date ownership transferred.
| Beds | Baths | Cars | Title reference | |||
|---|---|---|---|---|---|---|
| 15 Mar 2017 | 27 Apr 2017 | $1,355,000 | - | - | - | 12/SP3698 |
$1,355,000 Sold 15 Mar 2017
Settled27 Apr 2017
Beds-
Baths-
Cars-
Title reference: 12/SP3698
Other sales at 28 William St
The most recent sales of other units in this building. See every sale in the building.
| Beds | Baths | Cars | Title reference | ||||
|---|---|---|---|---|---|---|---|
| 5 | 7 Aug 2026 | 10 Aug 2026 | $1,860,000 | - | - | - | 5/SP3698 |
| 5 | 6 Aug 2021 | 1 Oct 2021 | $1,975,000 | - | - | - | 5/SP3698 |
| 7 | 13 Aug 2021 | 1 Oct 2021 | $1,700,000 | - | - | - | 7/SP3698 |
| 7 | 17 Oct 2018 | 9 Nov 2018 | $1,025,000 | - | - | - | 7/SP3698 |
| 4 | 22 Sep 2018 | 1 Nov 2018 | $960,000 | - | - | - | 4/SP3698 |
| 11 | 28 Jun 2017 | 28 Jun 2017 | $1,000,000 | - | - | - | 11/SP3698 |
$1,860,000 Sold 7 Aug 2026
Title reference: 5/SP3698
$1,975,000 Sold 6 Aug 2021
Title reference: 5/SP3698
$1,700,000 Sold 13 Aug 2021
Title reference: 7/SP3698
$1,025,000 Sold 17 Oct 2018
Title reference: 7/SP3698
$960,000 Sold 22 Sep 2018
Title reference: 4/SP3698
$1,000,000 Sold 28 Jun 2017
Title reference: 11/SP3698
Recent sales on William St
Sold in the last two years.
- 10/30 William St, Double Bay 2028 $1,600,000 sold 31 Jul 2026
- 43 William Street, Double Bay 2028 $15,000,000 sold 18 Dec 2025, 790 m²
- 3/48 William Street, Double Bay 2028 $1,850,000 sold 12 Dec 2025
- 13/51 William Street, Double Bay 2028 $4,001,000 sold 17 Nov 2025
- 6/10 William Street, Double Bay 2028 $2,200,000 sold 14 Nov 2025
- 4/55 William Street, Double Bay 2028 $2,830,000 sold 31 Oct 2025
- 3/55 William Street, Double Bay 2028 $2,830,000 sold 31 Oct 2025
- 2/55 William Street, Double Bay 2028 $2,830,000 sold 31 Oct 2025
Recent sales nearby
Sold in the last 12 months within about 400 metres.
- 5/36 B Fairfax Rd, Bellevue Hill 2023 $552,500 sold 1 Sep 2026
- 12/17 Knox St, Double Bay 2028 $1,045,000 sold 21 Aug 2026
- 2/499 New South Head Rd, Double Bay 2028 $1,240,000 sold 17 Jul 2026
- 4/290 New South Head Rd, Double Bay 2028 $1,310,000 sold 13 Jun 2026
- 501/34 Cross St, Double Bay 2028 $14,250,000 sold 30 May 2026
- 45/177 Bellevue Rd, Bellevue Hill 2023 $1,400,000 sold 26 May 2026
- 5 Kulgoa Rd, Bellevue Hill 2023 $8,475,000 sold 21 May 2026, 566 m²
- 14/490 New South Head Rd, Double Bay 2028 $1,610,000 sold 20 May 2026