Most property management growth plans follow the same logic: more doors mean more revenue. But Crossub co-founder Geng Xu says that equation rarely plays out the way principals expect.
“More doors usually means more staff, more supervision, more systems – and a margin line that quietly flattens just as the top line starts to climb,” Geng says.
“The real question isn’t whether to scale. It’s whether the way you’re scaling is actually making you money.”
The headcount trap
Geng says the default response to a growing rent roll is a familiar one: hire another property manager.
But as portfolios expand, he explains, operational complexity doesn’t scale neatly alongside headcount. Compliance layers multiply, maintenance coordination becomes more demanding, and the management overhead required to keep a growing team aligned adds costs that rarely appeared in the original business case.
“Agencies hire to grow, but often the growth just funds the hire,” he says.
“You scale the workload without scaling the profit.”
Geng describes it as a linear input applied to a non-linear problem. Every new hire adds fixed cost, but every new property adds variable complexity – different landlords, different compliance requirements, different maintenance profiles.
“The gap between the two is where margin disappears.”
The cost you don’t see in the salary
According to Geng, salary is the number principals focus on – but the fully loaded cost of a PM team extends well beyond the employment contract.
“Supervision and management time, onboarding and training, sick leave cover, turnover disruption, and the operational inefficiencies that accumulate across systems and processes – these sit outside the line item but land squarely on the P&L.”
He puts the total annual cost of a property manager and an assistant at around $180,000, including overheads.
At an average management fee of 5 per cent on a $500-per-week rental, each property generates roughly $1,300 in management income per year. Geng says that means an agency needs approximately 138 properties under management just to cover the cost of the team – before a single dollar flows through to profit.
“For agencies operating at or near that threshold, growth doesn’t feel like growth,” he says.
“It feels like treading water.”
Changing the economics of growth
Crossub’s model is built around a different proposition. Agencies retain full ownership and control of their rent roll while Crossub operates as the integrated back-end infrastructure – the operational team and systems behind the scenes.
The agency keeps the landlord relationship, the brand, and the management agreement.
“Because there’s no internal hiring, no fixed overhead and no onboarding cycle, the cost base stays variable and tied directly to portfolio size,” Geng says.
“Agencies can grow without the staircase of staffing commitments that typically compress margin at each step.”
The proof in the numbers
Geng points to one agency that engaged Crossub with just three properties under management and no internal PM team.
Within 12 months, the portfolio had grown to more than 140 doors.
Under a traditional staffing model, he says, a rent roll of that size would be operating at or near break-even. With Crossub, the same agency is generating six-figure annual net profit – without a single property management hire.
“We didn’t just grow a rent roll,” the client says.
“We built a business that was cash-flow positive from the start.”
For principals weighing up rent roll growth, Geng says the conversation is straightforward.
“It’s not about whether to grow. It’s about the operating model that sits behind the growth.”
Crossub works with agencies across Sydney, Melbourne and Brisbane.
To learn more, visit crossub.com.au.
