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Mosman residents to grill Defence over HMAS Penguin sale, as Masterplan clock ticks.

Published On: April 30, 2026

Mosman residents are urged to attend a special HMAS Penguin community session with the Defence Department next Firday, May 8.

By ANNA USHER

Mosman residents will get their first chance to grill the Department of Defence over the sale of HMAS Penguin next Friday, when Australian Government officials front a public meeting at Allan Border Oval Pavilion.

And it’s not the only fight locals need to show up to.

The Defence session has been locked in for Friday 8 May at 5pm at the Allan Border Oval Pavilion in Mosman.

Mosman Council has thrown open a three-week consultation on its long-term Masterplan, the suburb’s response to the NSW Government’s Low and Mid-Rise Housing Policy. Submissions close on Monday 19 May.

Two consultations. Two weeks. The biggest decisions Mosman has faced in years.

What the HMAS Penguin meeting means for Mosman

The Defence session has been locked in for Friday 8 May at 5pm at the Allan Border Oval Pavilion in Mosman.

It is the first time residents will be able to put questions directly to Australian Government representatives about the proposed sale of approximately two-thirds of the 16.64-hectare Middle Head Rd base.

Mosman Mayor Ann Marie Kimber says Council “remains unequivocally opposed to the sale of HMAS Penguin land”.

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Mosman Collective first revealed the divestment last month.

The base, which opened in 1942, sits on land widely regarded as one of the most environmentally and historically significant parcels left on the lower north shore.

Federal Warringah MP Zali Steggall has pressed Finance Minister Katy Gallagher for a guarantee the site will deliver affordable housing rather than luxury apartments.

“It is not simply an asset to be sold off in a fire sale,” Ms Steggall told the minister.

Mosman Mayor Ann Marie Kimber.

Mosman Mayor Ann Marie Kimber has said Council “remains unequivocally opposed to the sale of HMAS Penguin land”.

“Decisions about its future must not be made behind closed doors or driven by short-term interests,” Mayor Kimber said.

“Genuine community consultation must be at the centre of any decision-making process.”

Friday week is exactly that opportunity.

Why the Mosman Masterplan matters

The Masterplan is the suburb’s local response to NSW Government housing reforms that are about to reshape every street in Mosman.

Mayor Kimber says the consultation is the chance for locals to shape “a community-led response to the State Government’s Low and Mid-Rise Housing Policy”.

Council has engaged consultants SJB, the same firm that worked with Ku-ring-gai Council on its response to the same NSW policy.

Whether you live, work, study, or run a business in Mosman, your perspective is important to help shape the Mosman Masterplan.

Two alternative development options will be put up against the existing State Government rules, alongside a set of guiding principles.
Residents, workers, students and local business owners are all invited to weigh in.
Council is offering an online survey, in-person drop-in sessions, pop-up stalls, a webinar and a business breakfast.
The full schedule is on the official website.

 

Lock these dates in your diary:

 

If you live, work, study or run a business in Mosman, here are the two dates that matter:
  • Friday 8 May, 5pm: HMAS Penguin community session, Allan Border Oval Pavilion.
  • Closes Monday 19 May: Mosman Masterplan consultation submissions.

Mosman Masterplan submissions close Monday 19 May.

“I know this has been an uncertain time for many,” Mayor Kimber told residents.

“Our sustained advocacy has been critical in securing agreement from the State Government to develop a long-term Masterplan for Mosman.”

The principles and options are now on public exhibition before a final plan is prepared.

In other words: the time to shape it is now, not later.

WE WANT TO HEAR FROM YOU: Going to the HMAS Penguin meeting or making a Masterplan submission? Email [email protected] or DM us on Instagram.

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Warringah Freeway Chaos: The five changes you need to know before Monday peak.
What's On: The Red Baron in Mosman, a 90th birthday and four Burley Griffin homes you can walk through.

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