Should You Buy a New Build or Existing Property for Investment? A Landlord's Guide

If you're looking to invest in residential property, one of the first decisions you'll face is whether to buy new or existing. Each option comes with different deposit requirements, tax implications, maintenance costs, and growth potential. Here's what you need to know to make the right choice for your situation.

Deposit Requirements: The Big Difference

This is often the deciding factor for many investors. Banks typically allow just 20% deposit for new build investment properties, the same as owner-occupied, with some banks going as low as 10% for certain new build developments. In contrast, you'll need 30-35% deposit for existing investment properties under current LVR (Loan-to-Value Ratio) rules.

For many investors, this deposit difference is significant. A $700,000 new build might require $140,000 deposit, while a $700,000 existing property could need $210,000-245,000. That's a substantial difference in capital required to enter the market.

Tax Implications: Interest Deductibility

From April 2025, 100% interest deductibility has been restored for all residential investment properties, both new builds and existing. You can now claim your full mortgage interest against rental income regardless of which type of property you own.

This represents a significant change from the 2021-2024 period when interest deductibility was being phased out for existing properties. The restoration of full deductibility means existing properties are now on a level playing field with new builds from a tax perspective.

The Bright-Line Test

From July 2024, all residential investment properties are subject to a 2-year bright-line test. If you sell within 2 years of purchase, any capital gain is taxed as income (with some exceptions, like the main home). This applies equally to new builds and existing properties, eliminating the previous difference in holding periods.

Maintenance and Compliance

New builds come with several advantages for landlords. They arrive with a Code Compliance Certificate ensuring building standards are met, typically include builder warranties of 10 years for structure, use modern low-maintenance materials, are already compliant with Healthy Homes Standards, and have lower immediate maintenance costs.

Existing properties require more upfront work. You'll need to achieve Healthy Homes compliance covering heating, insulation, ventilation, moisture, and draught stopping. There's potential need for weathertightness remediation, especially in properties built during the 1990s and 2000s. Older systems like plumbing, electrical, and roofing require ongoing maintenance, and older homes may contain asbestos or other hazardous materials. Budget $2,000-10,000+ for Healthy Homes compliance depending on current state.

Capital Growth Potential

This is where existing properties often have the edge. Established locations come with proven track records and larger land components, and since land appreciates while buildings depreciate, this matters for long-term returns. Desirable suburbs offer scarcity value, and existing properties often provide renovation potential to add value.

New builds are often in developing areas with less historical data and tend to have smaller sections with less land value per dollar invested. They may see slower initial growth as the area matures, and the premium pricing that reflects newness depreciates over time.

Historically, properties in established suburbs have shown stronger long-term capital growth, but this varies significantly by location and market conditions.

Tenant Appeal

Both options attract tenants, but for different reasons. New builds attract tenants seeking modern features and design, energy efficiency and lower power bills, heat pumps and quality insulation, and low-maintenance outdoor areas. Existing properties attract tenants seeking established neighbourhoods with amenities, character and larger living spaces, bigger backyards and gardens, and proximity to schools, shops, and transport. Consider your target tenant market when making your decision.

Which Is Right for You?

A new build may be the better choice if you have limited capital and need the lower deposit requirement, if cashflow and tax efficiency are your priorities, if you want minimal maintenance in the early years, or if you prefer a passive, hands-off investment.

An existing property may suit you better if you have more capital available for a 30%+ deposit, if long-term capital growth is your priority, if you want to add value through renovation, or if you prefer established locations with proven demand.

Match the Property to Your Goals

There's no universally "right" answer. New builds offer better tax treatment and lower deposit requirements; existing properties may offer stronger capital growth and larger land components. The best choice depends on your financial situation, investment timeline, and goals.

Consult with a mortgage adviser to model the financial outcomes for each option based on your specific circumstances.