← Board · Double Bay — prices, sales, schools, crime

55 William Street, Double Bay

Strata plan SP15996 · 4 lots (NSW Strata Hub) · registered 1980-09-30 (age floor) · VG property id 2104280

This building has 6 recorded sales since 2018; 3 of its 4 lots are for sale right now. Every figure below is a government record with its source named — and the last section lists what the public record cannot tell you.

On the market now

3 of the scheme's 4 lots are on the market at once — 75% of the building. Ratio and raw counts from the live book × strata register, today.

55 William Street, Double Bay NSW 2028 3 bed Price withheld 113d on market

55 William Street, Double Bay NSW 2028 2 bed Price withheld 112d on market

55 William Street, Double Bay, NSW 2028 Price withheld

Every sale in this building

6 priced transfers on the public record since 2018.

In the last three years, 4 lots changed hands — 100% of the scheme's 4 lots. Trailing 36 months of VG transfers ÷ registered lot count.

4/55 WILLIAM ST$2.83M2025-10-31

3/55 WILLIAM ST$2.83M2025-10-31

2/55 WILLIAM ST$2.83M2025-10-31

1/55 WILLIAM ST$2.83M2025-10-31

3/55 WILLIAM ST$1.34M2018-11-23

1/55 WILLIAM ST$1.49M2018-09-15

NSW Valuer General bulk property sales information (CC-BY), every lot sharing this building's property id; addresses and unit labels are the register's own strings. Resale pairs under 3 months apart or settling on the same date are excluded; growth figures are gross price movements, not returns.

What units here actually rent for

2-bed$925–$1250/wkmedian $107553 bonds, Q2 2026

3-bed$1545–$2600/wkmedian $225014 bonds, Q2 2026

Real transacted rents — every residential bond lodged in postcode 2028 (NSW Fair Trading, CC-BY). Postcode is the finest geography the source publishes; the middle half (25th–75th percentile) is shown because identical floor plans in one building can lease hundreds apart.

Photo-read condition

3 of the building's photographed live listings read as: renovated. Read by AI from each listing's own marketing photos — a photo signal, not an inspection; cameras see nothing of plumbing, wiring, waterproofing or the strata record.

Nearby buildings with dossiers

48 William St6 sales · 9 lots

12 Carlotta Rd6 sales · 3 lots · 100% of resales above purchase

264 New South Head Rd6 sales · 24 lots

2 Knox St35 sales · 93% of resales above purchase

20 Cross St30 sales · 100% of resales above purchase

What this dossier cannot tell you

Stated so a gap never reads as a clean bill (rule 7's positive form — silence is not evidence):

The strata books. Levies, the capital-works (sinking) fund, insurance, AGM minutes, and any defect claims in progress are not public records. Only a strata report — a paid inspection of the owners corporation's own books — has them. If you are serious about a unit here, buy that report; nothing on this page substitutes for it.
When the building was actually completed. The 1980 registration date is a floor — the scheme existed by then. Occupation certificates aren't in our sources; a conveyancer can obtain them.
Bedrooms on sales records. The Valuer General publishes no bedroom counts, so the sales above are every configuration pooled — a $732k sale and a $1.38M sale may be different-sized homes, not a price swing.
This building's own rents. Bond data is postcode-grain — the ranges above are the area's real transactions, not this building's ledger.
Anything behind the photos. Condition reads come from marketing photos and are unvalidated against outcomes — they see no plumbing, wiring, waterproofing, or the strata record.
Why any individual vendor is selling. The patterns above are the building's record; no line on this page is a claim about a particular home or owner.

© State of New South Wales (Spatial Services, a business unit of the Department of Customer Service NSW). For current information go to spatial.nsw.gov.au. VG figures: NSW Valuer General bulk property sales information (CC-BY). Every fact above names its source; where a source doesn't cover this building, the section doesn't appear.