PHOTO: Just 3.9m wide. 💎 Worth nearly $100K per sqm. 🌊 On the waterfront. And now… SOLD. 3a Carthona Avenue, Darling Point. Allhomes
💸 A House So Slim… Yet So Staggeringly Expensive
In a jaw-dropping auction result, Sydney’s iconic ‘skinny mansion’ — a luxury waterfront property measuring less than four metres wide — has sold for a whopping $19.5 million in Darling Point, one of Australia’s most elite postcodes.
📍 Address: Carthona Avenue, Darling Point
📐 Size: 207 sqm | 💵 $94,202 per sqm
🏷️ Sold For: $19.5 million
🛏️ Bedrooms: 4
🛁 Bathrooms: Multiple, including poolside + marble ensuite
🚤 Transport: 7 minutes by boat to CBD
💰 Capital Gain: +$1M per year since 2001
🧱 Built Slim, Priced Fat: Key Features That Justify the Hype
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🔥 Record-breaking price-per-square-metre for a freestanding house
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🏝️ Private beachfront with harbour-edge pool
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🛋️ 5 luxurious levels, underfloor heating & glass lift
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🌅 Panoramic harbour views from every bedroom
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🍸 Wet bar, Caesarstone kitchen, & sunlit patios
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🛀 Designer bathrooms including a marble-clad main ensuite
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🏗️ Built in 1980 — still turning heads 45 years later
🧑🎨 Designer Prestige
The home was most recently owned by fashion designer Gregory Ladner and his husband Mark Grenville, and was previously held by Fiona Brown, co-founder of Dicker Data — Australia’s tech accessory powerhouse.
3a Carthona Avenue, Darling Point. Photo: TRG
Good design means the property was able to fit a pool. Photo: TRG
An aerial shot of the house at low tide shows just how skinny the house is compared to its neighbours. Photo: TRG
The property, which has its own private section of beach, was built in 1980
📊 Record Setters: How It Compares
| 🏠 Property | 💵 Price per sqm |
|---|---|
| Darling Point “Skinny” Mansion | $94,202 |
| Bondi Beach Apartment (Notts Ave) | $126,000 |
| One Sydney Harbour Penthouse | $100,000 (at $141.5M) |
Despite its narrow frame, this Darling Point residence now sits among Australia’s most expensive properties per square metre — outdone only by elite apartments in Bondi and Barangaroo.
🧭 Why This Property Was a Magnet for Wealth
📍 Blue-chip location – Darling Point is one of Sydney’s most tightly held suburbs
🌊 Waterfront prestige – With pool-to-sea luxury and city views
🛥️ Elite accessibility – 4km to CBD or 7 mins by boat
🏗️ Rare title – Few free-standing homes with this much architectural flair + positioning remain
💬 Final Word
Slim by size. Gigantic by value.
This skinny stunner proves yet again: in Australian real estate, location and lifestyle beat floorplan every time.
SOURCE: THE DAILY MAIL