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Images and floorplans are provided for illustrative purposes and remain the property of their respective copyright owners.

18A&B/21 Thornton Street
Darling Point, NSW 2027

Price Upon Request

5
Bed
4
Bath
2
Cars
Property Type: Apartment
Listed Date: 24th Apr 2026
Overview

18A&B/21 Thornton Street

The breathtaking splendour of Sydney Harbour is the highlight of this magnificent sub-penthouse, architecturally transformed to offer luxurious house-sized living on Level 18 of Thornton Place, a landmark building in one of Sydney's premier harbourside locations. The residence boasts an unparalleled 270-degree panorama, stretching from Rushcutters Bay to the Harbour Bridge, Opera House, city skyline, and northwards to Manly and The Heads. This 265 square meter home is the ultimate vantage point for enjoying Sydney's world-famous New Year's Eve fireworks.

The interiors are defined by contemporary high-end design, featuring expansive walls of glass that maximize the spectacular views. The granite kitchen serves as a stunning social hub within an open and flowing layout designed for family functionality, seamlessly connecting the living areas with the bedroom wing. Every room, including two living areas, the dining area, and the kitchen, offers dazzling views, with a cleverly designed glass panel framing iconic sights of the Harbour Bridge.

This impressive entertainer's residence enjoys a perfect north aspect, allowing natural light to flood in from all sides. The five-bedroom, four-bathroom layout spans the premier A and B wings on Level 18, providing adaptability for a growing family. The master bedroom features a walk-in wardrobe and ensuite, while the four additional double bedrooms include built-ins, with three having ensuites. One bedroom is currently used as an office. The home also includes four sleek bathrooms, a powder room, and a laundry.

Stylish living is enhanced by custom joinery, New York marble bathroom finishes, electric blinds, ducted zoned air conditioning, and level lift access to two secure car spaces and storage. The elite building stands within spacious grounds featuring manicured gardens, a pool, and an on-site manager. With only two owners since the 1970s, this sub-penthouse represents a rare offering in a blue-chip harbourside location close to McKell Park, Rushcutters Bay Park, yacht marinas, excellent schools, and the Double Bay shopping village.

  • World-class 270-degree views of Sydney Harbour with a sunny north aspect
  • Iconic uninterrupted views of the Opera House and Harbour Bridge
  • Superbly recreated 265 square meter house-like layout in A and B wings
  • Luxurious interiors architecturally designed with high-end finishes
  • Spacious living areas designed for entertaining and family functionality

Location
18A&B/21 Thornton Street
Darling Point NSW 2027
Measurements
Type Dimensions
Floor Area 265 sqm
Market Insights for Darling Point NSW 2027
New Listings (last 30 days)
7
Average price
$5,499,397
Lowest price
$1,200,000
Highest price
$16,395,780
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