Published: June 2026 · Authors: Mike Mortlock, MCG Quantity Surveyors, in partnership with Suburbtrends
Overview
From 1 July 2027, negative gearing is limited to new builds, steering investors, and the rental stock tenants are offered, toward brand-new homes. The New-Build Rent Penalty quantifies what that shift costs renters: after comparing like with like, brand-new dwellings rent for roughly 5% more than the established home next door, and around 10% more for apartments, with the gap holding in about three of every four local markets.
Methodology
With Suburbtrends, MCG examined around 180,000 residential rental listings across every state and territory (March to June 2026), separating genuine brand-new buildings from established homes and comparing the same suburb, property type and bedroom count. The premium was confirmed across four independent methods, and every SA3 market is graded by evidence strength.
Key Findings
- 137 SA3 markets ranked across Sydney (median premium 12%), Adelaide (9%), Melbourne (7%), Canberra (6%), Brisbane (5%) and Perth (2%)
- Sydney's Eastern Suburbs - North tops the country at +29%: about $475 a week, or $24,700 a year, over comparable established homes
- The tax engine behind it: MCG data shows a brand-new unit averages ~$23,000 in first-year deductions against ~$6,500 established, which is exactly why investor demand will follow the policy into new stock
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