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9 Marathon Mews, Double Bay

Strata plan SP7626 · 5 lots (NSW Strata Hub) · registered 1973-10-10 (age floor) · VG property id 2092467

This building has 7 recorded sales since 2021; 100% of its 3 tracked resales sold above the owner's purchase price. Every figure below is a government record with its source named — and the last section lists what the public record cannot tell you.

9 Marathon Mews is a 5-lot strata building where 7 sales were recorded from 2021 onwards, with 4 sales in the last 3 years. Of 3 resale pairs tracked, the median hold time was 1.9 years and 100% sold above their purchase price. In Double Bay 2028, 1-bedroom bonds median $815/wk (middle half $662–$900/wk), 2-bedroom median $1075/wk (middle half $925–$1250/wk), and 3-bedroom median $2250/wk (middle half $1545–$2600/wk).

Written by AI from the government records on this page — checked figure-by-figure against them (2026-08-27). A description of the record, never advice.

Every sale in this building

7 priced transfers on the public record since 2021. Across 3 same-unit resales, owners held a median 1.9 years and 100% sold above what they paid (median +8.9%/yr gross — price only, before costs and any renovation).

In the last three years, 4 lots changed hands — 80% of the scheme's 5 lots. Trailing 36 months of VG transfers ÷ registered lot count.

Unit 2$4.15M2025-07-14

Unit 4$3.33M2025-03-20

Unit 1$4.68M2024-09-05

Unit 3$4M2024-02-09

Unit 2$4.1M2023-08-07

Unit 1$4M2023-05-27

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

526 New South Head Rd7 sales · 20 lots

260 New South Head Rd7 sales · 10 lots

509 New South Head Rd7 sales · 15 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 1973 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.