26 Kirkoswald Ave, Mosman is a 4 bedroom, 3 bathroom House with 2 parking spaces and was built in 1930. The property has a land size of 452m2 and floor size of 218m2.This Property is currently listed for sale with Atlas | Lower North Shore
Positioned high above Middle Harbour with captivating views stretching to Clontarf Beach, this striking residence enjoys a prized northerly orientation within the tightly held Golden Triangle. Exceptionally private and peaceful, the setting feels worlds away while remaining immersed in its harbourside environment.A statement in architectural precision, the home has been meticulously crafted by renowned architects Pleysier Perkins. Scandinavian-influenced interiors are paired with a curated selection of premium international finishes, creating a calm yet sophisticated aesthetic. Spanning three levels and serviced by an internal lift, the design offers rare flexibility, including level street entry to the upper floor and double garage-allowing effortless single level living if desired.Key Features Award-winning architectural design by Pleysier Perkins Highest six-star energy rating with exceptional thermal and acoustic insulation Extensive solar power system with two storage batteries plus 30,000L water tanks Open-plan kitchen with Turkish limestone benchtops, NEFF appliances and butler's pantry Expansive living and dining zones with American oak flooring and feature fireplace Floor-to-ceiling double-glazed glass framing water views and natural light Generous all-weather alfresco entertaining terrace with northerly sun Ground-floor living/rumpus retreat flowing to landscaped gardens Four spacious bedrooms, including a secluded master suite on the entry level Luxurious bathrooms, powder room and excellent storage throughout Media room or home office with Savant audio and Lutron lighting Ducted air conditioning, internal lift and double garage with internal access Smart-home technology and multiple balconies with leafy harbour outlooks Walk to Chinamans Beach, Balmoral Beach, cafs and transportOffering a rare blend of architectural prestige, sustainability and lifestyle convenience, this home is ideally suited to discerning couples seeking luxury without compromise, families wanting space and flexibility across multiple living zones, or downsizers who value single-level living with lift access-all within one of the Lower North Shore's most exclusive harbourside enclaves.
The size of Mosman is approximately 8.7 square kilometres. There are 45 parks, covering nearly 29.6% of the 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 16,013 properties. Over the last 5 years, Houses in Mosman have seen a 13.80% increase in median value, while Units have seen a 22.36% increase. As at 30 April 2026:
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