Federal Budget 2026: What It Could Mean for Northern Beaches Property Owners and Investors
The Federal Budget has introduced some of the biggest proposed property tax changes in decades, and for homeowners and investors here on the Northern Beaches, these changes could influence not only what people buy, but how they invest.
Unlike many parts of Australia, the Northern Beaches has traditionally been a market driven by lifestyle buyers, family upgraders, and long-term investors holding quality land in tightly held suburbs such as Palm Beach, Mona Vale, Newport, Narrabeen, Dee Why and Manly Vale.
These proposed changes may make that land component even more valuable.
Why this matters locally
With the government proposing that from July 2027 negative gearing will effectively be limited to new residential builds rather than established homes, investors may begin shifting away from older apartments or existing houses and toward projects that create additional housing supply.
On the Northern Beaches, that naturally raises one key question:
Could building a duplex be a smarter strategy than buying an existing investment property?
In many cases—potentially yes.
Potential advantages of duplex development
If you purchase an older home on suitable land and then develop a brand-new duplex (subject to planning approval), there may be several potential advantages:
1. Negative gearing may remain available
Under the current budget proposal, newly built residential properties are expected to retain access to negative gearing after July 2027, whereas established homes generally will not.
That means if you retain one or both new dwellings as investment properties, the holding costs may still potentially be deductible against other income (depending on final legislation and ownership structure).
2. Possible CGT flexibility
New-build residential property may also have more flexibility under the proposed CGT rules, including potential access to choose between the current 50% discount (if applicable under transitional rules) and the new indexation model. Final legislation will determine exactly how this applies.
3. Higher rental appeal
On the Northern Beaches, many tenants—particularly downsizers, professional couples, and executive families—often pay a premium for:
- brand-new finishes
- lower-maintenance living
- coastal design appeal
- energy-efficient homes
- garages, storage, and home-office spaces
A well-designed duplex in suburbs like Mona Vale, Narrabeen or Dee Why for example may command stronger rental demand than an older home or unit.
But there are important tax traps
This is where investors need specialist advice.
Whether you actually receive CGT treatment—or whether profits are taxed as ordinary income/GST under a development or “profit-making” activity—can depend on:
- your intent when purchasing
- whether you subdivide and sell immediately
- whether you hold the properties as long-term investments
- ownership structure (personal name, trust, company, SMSF etc.)
- whether the ATO views the project as an investment or a development business
A duplex that is built to hold as an investment can be treated very differently from one built to sell for profit.
So while the strategy can be powerful, it absolutely needs the right structuring before contracts are signed.
My Northern Beaches View
Locally, I suspect these changes could push more sophisticated investors toward:
- duplex sites
- corner blocks
- medium-density opportunities
- undercapitalised homes on larger land parcels
rather than simply buying older established investment stock.
For land-rich suburbs across the Northern Beaches, that could create a new wave of redevelopment opportunities over the next few years.
If you already own a larger block—or are considering buying one—this could be the perfect time to assess whether a duplex or boutique development strategy may create stronger long-term outcomes than holding a standard investment property.
Important: This is general property commentary only, not personal tax advice. Before acting on a duplex strategy, speak with a qualified Australian tax adviser, accountant, or property lawyer because the tax outcome can vary significantly depending on structure and intent.
That said, from a Northern Beaches property strategy perspective, I’m seeing more investors start asking exactly this question. – Marika Martinez
