Ready to see where multifamily profits actually come from? We crack open two live deals—a six-unit package with rosy expenses and a ten-unit at 80 percent occupancy—and show, step by step, how to separate seller storytelling from numbers you can bank on. We pressure-test expense ratios, model conservative debt costs, and reveal why a realistic 30 percent expense load can flip a “great” cap rate into a marginal one. Then we walk through the levers that matter most: price discipline, believable rent, and the compounding power of more doors.

The six-unit’s math looks fine until insurance and true operating costs come back to earth. Even a $50 rent bump across six units barely moves value, reminding us that smaller assets give you less lift per improvement. The ten-unit tells a different story. At a $1.4M ask, cash flow vanishes under debt service. At a $1.0M strike price with 25 percent down, current NOI supports healthy breathing room. Stabilize to 100 percent occupancy at $1,100 average rent, and NOI jumps to ~$93K. That shift justifies a value around $1.33M at a 7 percent cap and sets up a refinance that returns roughly a quarter-million dollars tax-free while improving yearly cash flow.

We lay out the playbook in plain language: buy on today’s NOI, not tomorrow’s promise; underwrite expenses like an owner, not a broker; target a return above your cost of debt; and only pay for upside after you create it. More units amplify every operational win, which is why scaling from ten to twenty doors using refi proceeds can double cash flow without doubling your workload. Along the way, we highlight practical checkpoints—rent rolls, occupancy trends, insurance normalization, and debt terms—that help you avoid thin deals and lock in durable gains.

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