18A/21 Thornton Street, Darling Point, NSW 2027 | Apartment for sale | OnTheHouse
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18A/21 Thornton Street
Darling Point NSW 2027

Bedrooms: 5
Bathrooms: 4
Car spaces: 2
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Architectural House-Size 265 SQM Apartment With Spectacular Harbour Views - Luxurious Sub-Penthouse In Elite 'Thornton Place'

The breathtaking splendour of Sydney Harbour takes centre stage at this magnificent sub-penthouse architecturally transformed for luxurious house-sized living on Level 18 of Thornton Place, a landmark building in one of Sydney's best harbourside vantage points. Unsurpassed for its spectacular 270° panorama sweeping from Rushcutters Bay to the Harbour Bridge, Opera House, city skyline and north to Manly and The Heads, the 265sqm residence is the ultimate place to be on New Year's Eve for the best views of Sydney's world famous fireworks.
Contemporary high-end design defines the streamlined interiors with walls of glass maximising the views, while a showstopping granite kitchen serves as the social heart in an easy flowing layout created for family functionality with a seamless connection between the living areas and bedroom wing. Dazzling views are enjoyed from every room including two living areas, dining area and the kitchen where a cleverly designed glass panel captures iconic views to the Harbour Bridge.
An impressive entertainer with perfect north aspect and natural light streaming in on all sides, the five-bedroom four-bathroom residence is adaptable for a growing family with its generous layout spanning the premier A and B wings on Level 18. Wake up to beautiful harbour views in the master bedroom (with walk-in wardrobe and ensuite), 4 more double bedrooms (3 with ensuite, each with b/ins, and one bedroom currently uses as an office), 4 sleek bathrooms, powder room and laundry.
Enjoy stylish living with custom joinery, New York marble bathroom finishes, electric blinds, ducted zoned air-con and level lift access to 2 secure car spaces and storage in an elite building standing in spacious grounds with manicured gardens, pool and on-site manager. With only two owners since the 1970s, the sub-penthouse is a rare offering in a blue-chip harbourside location close to McKell Park, Rushcutters Bay Park, yacht marinas, excellent schools and Double Bay shopping village.
- World class 270° views of Sydney Harbour, sunny North aspect
- Iconic uninterrupted views of Opera House and Harbour Bridge
- Superbly recreated 265sqm house-like layout in A and B wings
- Luxurious interiors architecturally designed with high-end finishes
- Spacious living and dining areas with harbour views on three sides
- Family living area with custom b/in cabinetry and storage cupboards
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Property Details for 18a/21 Thornton St, Darling Point

18a/21 Thornton St, Darling Point is a 5 bedroom, 4 bathroom Apartment with 2 parking spaces. The place is currently for sale with Ray White Double Bay.

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Apartment
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About Darling Point 2027

The size of Darling Point is approximately 0.7 square kilometres. There are 4 parks, covering nearly 14.3% of the total area. The population of Darling Point in 2016 was 4190 people. By 2021 the population was 3977 showing a population decline of 5.1% in the area during that time. The predominant age group in Darling Point is 70-79 years. Households in Darling Point are primarily childless couples and are likely to be repaying over $4000 per month on mortgage repayments. In general, people in Darling Point work in a professional occupation.In 2021, 61.30% of the homes in Darling Point were owner-occupied compared with 61.50% in 2016.

Darling Point has 2,977 properties. Over the last 5 years, Houses in Darling Point have seen a -6.67% decrease in median value, while Units have seen a 6.82% increase. As at 31 July 2026:

  • The median value for Houses in Darling Point is $9,162,767 while the median value for Units is $2,596,133.
  • Houses have a median rent of $2,748 while Units have a median rent of $1,350.
There are currently 12 properties listed for sale, and 6 properties listed for rent in Darling point on OnTheHouse. According to Cotality's data, 103 properties were sold in the past 12 months in Darling point.

Suburb Insights for Darling Point 2027

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Adam Reichman
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Thomas Popple
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Ray White Double Bay
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Disclaimer
The Cotality Data provided in this publication is of a general nature and should not be construed as specific advice or relied upon in lieu of appropriate professional advice.

While Cotality uses commercially reasonable efforts to ensure the Cotality Data is current, Cotality does not warrant the accuracy, currency or completeness of the Cotality Data and to the full extent permitted by law excludes all loss or damage howsoever arising (including through negligence) in connection with the Cotality Data.