25 Onslow St, Rose Bay is a 5 bedroom, 3 bathroom House with 2 parking spaces. The property has a land size of 412m2 and floor size of 172m2. While the property is not currently for sale or for rent, it was last sold in May 2023.
A statement of uncompromising luxury and architectural brilliance, this brand-new residence redefines contemporary family living in a peaceful Rose Bay address.
Meticulously crafted over three years as a true labour of love, this magnificent double brick home features solid concrete construction across both levels and reflects an unwavering dedication to quality, precision and enduring design.
A grand entrance foyer with lift access to every level sets the tone, while a refined palette of textural materials, including solid herringbone timber and marble accents, is enriched by sculptural curves and beautifully executed detailing to create interiors of timeless elegance.
A chef's marble kitchen is appointed with a vast island breakfast bar and premium Miele gas appliances, while extending to a private side courtyard with a bar, offering an intimate setting for relaxed entertaining.
Beyond, striking open plan living and dining areas are enhanced by soaring ceilings, an integrated gas fireplace and walls of glass allowing seamless transitions to an alfresco entertainers' terrace. Framed by a dramatic circular skylight, it features an integrated BBQ and outdoor kitchen followed by a sunny level lawn and a circular mosaic-tiled swimming pool.
Upstairs, four generous bedrooms provide luxurious family accommodation, each appointed with custom built-in wardrobes and beautiful natural light. Two bedrooms enjoy their own ensuite, including the master with a freestanding bath, while every bathroom is finished with exquisite marble, underfloor heating, Parisi tapware and rainwater showers.
Further highlights of this incredible home include a dedicated study, zoned ducted air conditioning, a guest powder room and extensive storage, AV security intercom and internal access to a remote garage with secure off-street parking. There is also scope to create a double lock-up garage (STCA), presenting an exciting opportunity to further elevate this already exceptional residence.
Perfectly positioned in one of Rose Bay's most tightly-held pockets, this extraordinary residence is within a stroll of cosmopolitan village shops and popular cafes, Harris Farm and Bunnings, while moments to Bondi Beach, Rose Beach, buses, ferries and prestigious schools.
- 5 bed + study | 3.5 bath | 2 car
- Brand-new state-of-the-art architectural masterpiece
- Concrete construction & double brick across both levels
- Meticulously crafted with exceptional attention to detail
- Intelligent design balancing luxury & everyday functionality
- Chef's kitchen with expansive marble island breakfast bar
- Premium Miele gas appliances, custom wine fridge
- Striking open living and dining with soaring ceilings
- Effortless transition to all-weather alfresco entertaining
- Circular skylight and integrated outdoor kitchen & BBQ
- Sun bathed level backyard with mosaic-tiled circular pool
- Premium gas fireplace, zoned ducted air conditioning
- Exquisite marble accents and bespoke joinery throughout
- Four upper-level bedrooms appointed with custom BIR's
- Three deluxe marble bathrooms with underfloor heating
- Master & second bedroom with ensuites, powder room
- Master ensuite w/ Calacatta vanity & standalone bath
- Internal laundry with storage and direct outdoor access
- Parisi bronze tap ware in all bathrooms, kitchen & laundry
- Grand entrance foyer and internal lift servicing both levels
- Automated gate access with secure parking for two cars
- Potential to create a double lock-up garage (STCA)
- Stroll to village shops, cafes, Harris Farm and Bunnings
- Walk to Rose Bay Beach, buses, ferries, gourmet delis
- Minutes to Bondi Beach, Westfield & esteemed schools
The size of Rose Bay is approximately 2.5 square kilometres. There are 15 parks, covering nearly 35.5% of the total area. The population of Rose Bay in 2016 was 10053 people. By 2021 the population was 9911 showing a population decline of 1.4% in the area during that time. The predominant age group in Rose Bay is 30-39 years. Households in Rose Bay are primarily childless couples and are likely to be repaying over $4000 per month on mortgage repayments. In general, people in Rose Bay work in a professional occupation.In 2021, 53.80% of the homes in Rose Bay were owner-occupied compared with 52.80% in 2016.
Rose Bay has 6,116 properties. Over the last 5 years, Houses in Rose Bay have seen a 17.21% increase in median value, while Units have seen a 0.53% increase. As at 31 August 2026:
N/A
N/A
View TrendN/A
N/A
N/A
N/A
View TrendN/A
N/A
© Copyright 2026. RP Data Pty Ltd trading as Cotality (Cotality). All rights reserved. No reproduction, distribution, or transmission of the copyrighted materials is permitted. The information is deemed reliable but not guaranteed.
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.