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

Search Band Search Visibility Band

$8M - $9M Medium Confidence Calculated based on our search observations.

Apartment 5 Beds 4 Baths 2 Cars 265 m²

Listed: 24th Apr 2026

Updated: 13 days ago

Overview

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

Local Market Insights

In Darling Point, Quiet Listings observed 11 new apartments entering the market over the last 30 days, up from 4 during the previous 30-day period, with an average advertised asking price of $2,661,751. The property type mix of listed properties is predominantly Apartments at 79%, followed by houses (21%). The most active agency for apartments in the Darling Point area is currently Belle Property, representing 36% of new listings, followed by Ray White with 27%. These insights are based on agencies currently monitored by Quiet Listings and are updated as the local market changes.

While every effort is made to ensure the accuracy and completeness of the property information provided, no guarantee is given. Buyers should independently verify all details, inclusions, availability, pricing, and other relevant information directly with the listing agent before relying on this information.