A debate over new low‑ and mid‑rise apartments in Sydney’s affluent harbourside suburbs has exposed a cultural split between residents who say towers bring community and services, and those who argue the changes will erode local character.

Former Cremorne Point resident Tim Ellis, 58, told the Sydney Morning Herald he left the exclusive lower north shore suburb more than two decades ago because he found it "soulless" and isolating, and now favours higher‑density living in inner Sydney. "It felt like a soulless community of corporate people, and everyone ignored each other," he said of the area next to Mosman. "When I came to Potts Point, it was so different. It felt so full of life and vibrant, and there were lots of people and cafes and great restaurants."

Those who support new apartment buildings say they can deliver everyday conveniences and more affordable housing options that are otherwise unavailable in pocketed, high‑value suburbs. Adam Flower, president of the Norwest Community Association, said his tower contains a supermarket, shops, medical facilities and a gym, and argued that "each tower that comes brings more services." Flower said affluent areas should not be restricted to those who can afford houses and that apartments can "actually build community and make it stronger."

The comments come as the NSW government promotes a Low and Mid‑Rise Housing State Environmental Planning Policy (SEPP) intended to boost housing supply across Sydney. The policy overrides local council planning controls in some cases and sets targets for new homes in councils around the harbour. Mosman has been assigned a target of 500 new homes by 2029, compared with much larger allocations elsewhere: Ryde 11,600, North Sydney 5,900 and Woollahra 1,900.

Two development applications for four‑storey and six‑storey apartment blocks have already been submitted to Mosman Council under the policy. Proponents say such projects would provide hundreds of affordable homes in areas where median weekly family incomes are among the highest in the nation.

The reforms have prompted determined resistance from some long‑term residents who contend the SEPP imposes a one‑size‑fits‑all approach that compromises local planning discretion and heritage protections. Judith Pearson, 89, an accountant who has lived near Balmoral Beach for more than 30 years, has launched a court challenge as a private citizen. Pearson said she supports the need for more housing but objects to what she described as the stripping away of councils' ability to shape development. "I couldn't just stand by and watch the value and character of what makes the area special being destroyed," she told the Herald. "Someone asked me if (the court challenge) is about being 'entitled' and my reply to that was: 'Yes, we are entitled because we’ve worked hard to live here. I am entitled to live here.'"

Local opposition has focused on heritage conservation, streetscape impacts and the perceived loss of local voice in planning decisions. Supporters of the SEPP and of higher‑density housing say that without greater supply—particularly near employment hubs and public transport—housing affordability will continue to deteriorate.

The dispute in Mosman mirrors broader tensions across Sydney as the state government seeks to increase housing supply in established suburbs. Planning officials and councils have begun assessing applications and legal challenges are unfolding in courts, leaving the future of several proposed mid‑rise projects subject to judicial and planning decisions. Media outlets have sought comment from opponents and proponents; Ms. Pearson and other residents involved in the challenge have made public statements to local papers.

As the SEPP proceeds, local councils, residents and developers will continue to negotiate the balance between increasing housing options and preserving the features that long‑standing communities say define their suburbs.