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

30 William Street, Double Bay

Strata plan SP20729 · 12 lots (NSW Strata Hub) · registered 1983-09-27 (age floor) · VG property id 2104335

This building has 9 recorded sales since 2015. Every figure below is a government record with its source named — and the last section lists what the public record cannot tell you.

30 William St, Double Bay 2028 is a 12-lot building with 9 recorded sales since 2015, including 2 sales in the last 3 years. In the postcode, 1-bedroom rents have a median of $815/wk, 2-bedroom rents have a median of $1075/wk, and 3-bedroom rents have a median of $2250/wk. The middle half of 2-bedroom rents falls between $925–$1250/wk.

Written by AI from the government records on this page — checked figure-by-figure against them (2026-08-28). A description of the record, never advice.

Every sale in this building

9 priced transfers on the public record since 2015.

In the last three years, 2 lots changed hands — 17% of the scheme's 12 lots. Trailing 36 months of VG transfers ÷ registered lot count.

Unit 1$2.02M2025-06-07

Unit 11$1.8M2025-03-29

Unit 12$1.6M2022-01-18

Unit 2$2M2021-10-07

Unit 4$1.8M2021-08-26

Unit 4$1.01M2015-08-01

NSW Valuer General bulk property sales information (CC-BY), every lot sharing this building's property id; unit labels are the register's own strings. Transfers under 3 months apart are excluded as double entries; growth figures are gross price movements, not returns.

What units here actually rent for

1-bed$662–$900/wkmedian $81515 bonds, Q2 2026

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.

Nearby buildings with dossiers

45 Cross St9 sales

535 New South Head Rd9 sales · 15 lots

319 New South Head Rd9 sales · 9 lots

20 Cross St30 sales · 70% of resales above purchase

2 Knox St23 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 1983 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.
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.