How much rent is too much? The 30% rule in practice

The rule has endured for decades: housing costs shouldn't exceed 30 per cent of gross household income. It's simple, universally understood, and increasingly impossible to follow in Brisbane's tightening rental market.

A two-bedroom apartment in South Bank now commands $2,400 to $2,600 monthly. Across the river in Fortitude Valley, similar stock runs $2,200 to $2,500. Even established family suburbs like Paddington and Ashgrove—traditionally affordable pockets for young professionals and growing families—are now pushing $2,000 to $2,200 for comparable properties.

To stay within the 30 per cent rule in South Bank, a renter would need to earn roughly $96,000 to $104,000 annually. At Queensland's median wage of approximately $68,000, that's a $28,000 shortfall for a single earner before tax.

The gap widened sharply post-pandemic. While interstate migration from NSW and Victoria has bolstered Brisbane's appeal—and its rental demand—supply hasn't kept pace. Construction delays and higher development costs have compressed available stock, particularly in suburbs targeted by the 2032 Olympics infrastructure boom: Kangaroo Point, Fortitude Valley, and the emerging precincts around South Bank.

For renters, the mathematics are stark. A couple earning combined household income of $110,000 might comfortably afford $2,750 monthly under the 30 per cent rule. But that income level excludes many first-time renters entering the market from regional Queensland or interstate, who often fall into the $60,000–$85,000 bracket.

Financial advisers note the rule itself remains sound policy; it's market reality that's diverged. Renters in Brisbane increasingly choose between exceeding the threshold or relocating further out—to suburbs like Carindale, Zillmere, or Wynnum, where two-bedroom rentals sit closer to $1,600 to $1,800, though commute times stretch significantly.

The phenomenon reflects broader Australian property trends: rent inflation outpacing wage growth, particularly in capital cities experiencing migration surges. Brisbane's situation is acute because supply constraints meet demand peaks simultaneously.

For prospective buyers, the rental squeeze paradoxically strengthens the case for purchasing. A $550,000 mortgage on a median-priced property equates to roughly $2,800 monthly (principal and interest), comparable to renting comparable stock—but building equity rather than enriching landlords.

The 30 per cent rule hasn't changed. The Brisbane market has. For most renters caught in that gap, the question isn't whether the rule applies anymore—it's whether they can afford to stay.

This article was compiled by AI from the sources linked above and screened before publishing. See our editorial standards.