21 Balmoral Ave, Mosman is a 5 bedroom, 3 bathroom House with 2 parking spaces and was built in 1920. The property has a land size of 572m2 and floor size of 385m2. While the property is not currently for sale or for rent, it was last sold in December 2025. There are other 5 bedroom House sold in Mosman in the last 12 months.
Positioned to capture uninterrupted harbour views stretching from Balmoral and Manly to The Heads and north toward Clontarf, this exceptional north-east facing residence delivers the ultimate family lifestyle just moments from Balmoral Beach and Mosman Village. Designed for effortless living and entertaining, the home offers four generous bedrooms plus a study (or optional fifth bedroom), three beautifully appointed bathrooms including a recently renovated master ensuite, and multiple living zones enhanced by soaring ceilings, double-sided fireplaces and seamless indoor-outdoor flow. The master retreat enjoys its own terrace with skylight openings and breathtaking water views.At its heart, expansive open-plan living spills onto a large undercover terrace with built-in plumbed gas BBQ, overlooking a stunning 10m x 4m pool and fully equipped cabana. A rumpus with Belgian steel bi-fold doors opens directly to the poolside, while a dedicated lounge and family living area provide flexibility for growing families. Additional highlights include a 600-bottle sandstone wine cellar, zoned reverse-cycle air conditioning, underfloor heating, high ceilings throughout, a double garage with internal access and a professionally installed in-ground basketball hoop. Thoughtfully designed with passive climate principles and built to maximise the 570sqm parcel, this is a rare opportunity to secure a substantial, sun-drenched family sanctuary in one of Mosman's most tightly held pockets.
The size of Mosman is approximately 8.7 square kilometres. It has 45 parks covering nearly 29.6% of total area. The population of Mosman in 2016 was 28475 people. By 2021 the population was 28329 showing a population decline of 0.5% in the area during that time. The predominant age group in Mosman is 50-59 years. Households in Mosman are primarily couples with children and are likely to be repaying over $4000 per month on mortgage repayments. In general, people in Mosman work in a professional occupation.In 2021, 64.10% of the homes in Mosman were owner-occupied compared with 62.80% in 2016.
Mosman has 16,016 properties. Over the last 5 years, Houses in Mosman have seen a 9.43% increase in median value, while Units have seen a 21.85% increase. As at 31 March 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.