Flashback February 1954: Queen Elizabeth greets 48,000 school children at St Leonards Park in North Sydney.
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Groovy Baby! Modernist dream home on Balmoral Slopes has dazzled prestige Mosman buyers.

Published On: September 12, 2022

This 1960s home on the Balmoral slopes has dazzled local buyers looking for a unique renovation – or rebuild – project.


A modernist 1960s home just footsteps from Balmoral has dazzled local buyers keen to purchase a renovation project on almost 1000 sqm of prized land.

With its distinctive curved lines, 27a Mandolong Rd is a four-bedroom architectural triumph, designed by Bert Hely in 1959 and built by its original owner Donald Sundin a year later.

Incredibly, the property has remained untouched for 52 years.

These exquisite views from 27a Mandolong Rd are beyond compare.

Richard Simeon, who is marketing the huge residence ahead of its 17 September auction, says he hasn’t seen a better property opportunity in two decades.

“In just over 20 years and selling 60 odd waterfronts, I haven’t seen a better opportunity,” he said, “it’s a stunning property that can be either enhanced, or completely rebuilt, depending on your taste.”

With a 50-metre street frontage – the width of five traditional Mosman bungalows – the semi-circular home is a blank canvas of curved concrete walls, polished concrete floors, a sunken loungeroom and massive bedrooms with stunning views out to Balmoral.

Vast concrete spaces and a 50 metre frontage make this Mosman home a modernists dream.

“The home is an amphitheatre where everything connects back to the kitchen and an incredible entertaining terrace that is more than seven metres wide and seven metres deep,” Mr Simeon says.

“Properties with these vast proportions are a thing of the past, and to find one in original condition is a golden opportunity.

“With some love and care, this property could easily become a Sydney icon.”

Groovy Baby! 27a Mandolong Rd, Mosman is a once-in-a-lifetime opportunity, Richard Simeon says.

Featuring views over Balmoral span that span north to Clontarf, Manly and Sydney Heads, there is also a mature garden, with stunning trees sculpting the harbourside vista captured from all levels of the residence.

With direct access via Mandolong Lane and nestled into the hillside, the current home spans a huge 36m in lateral width and demonstrates the unlimited potential to create one of Balmoral’s finest residences, Mr Simeon said.

“Architects looking for a new project will relish the chance to create an award-winning family estate on a grand scale, built back on the site to utilise the airspace on multiple levels,” Mr Simeon said.

“Values on Balmoral slopes have sky rocketed with the highest sale now at $33m.

“I’m talking to frustrated buyers in the $15m to $20m plus range each week, so they should now consider this unique opportunity to build their own majestic masterpiece in paradise above Balmoral Beach.

“The best way to own the most awe-inspiring home, is to exceed your own expectations, by building it yourself in this iconic landmark location.”


  • Around 1,000 sqm of prized land in the heart of Balmoral slopes
  • Opportunity to build one of Balmoral’s most prestigious residences
  • Panoramic water views over Balmoral north to Clontarf, Manly and to Sydney Heads
  • Over 50m frontage in a private and tranquil setting
  • North east aspect and 300m walk to Balmoral Beach
  • Direct access from Mandolong Lane
  • Spacious existing dwelling spanning 36m wide.

Inspect: Thursdays at 11:45am

Auction: 17 September at 2pm

Price Guide:  $8.5 to $9 million

For more information please contact Richard Simeon.

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Flashback February 1954: Queen Elizabeth greets 48,000 school children at St Leonards Park in North Sydney.
Local Government News: Mosman Councillor Roy Bendall elected as new Deputy Mayor

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