Expense Ratio… The Silent Deal Killer

Everyone loves to talk about rent growth.

Value-add.

Upside.

But you know what quietly eats your returns without making a sound?

Expenses.

Specifically, an unrealistic expense ratio.

The expense ratio is simple:

Operating expenses divided by gross income.

But the interpretation? That's where people get burned.

I've seen deals underwritten at 35% and even 30%.

On paper, they look incredible.

In reality, they're fiction.

For most small to mid-size multifamily properties, a reasonable expense ratio typically lands somewhere between 45% and 55%.

Could it be lower? Sure.

But when I see something materially below that, my first thought isn't, "Great deal."

It's, "What's missing?"

Because something usually is.

How I Pressure-Test an Expense Ratio

First, I scan the obvious line items.

• Taxes: Are they using current taxes or post-sale reassessed taxes?

• Insurance: Has this been updated for today's market?

• Repairs and maintenance: Does it reflect the age of the property?

• Management: Even if you self-manage, I always include it.

Then I look for what's not there.

• Repairs disguised as CapEx

• Payroll that's missing or understated

• Utilities that magically disappear

• Administrative costs, legal fees, software, and turnover expenses

And my favorite: the "too clean" underwriting.

No variability.

No margin.

No reality.

Real properties are messy.

If the numbers look perfect, they're probably wrong.

The goal isn't to kill the deal.

It's to see the deal clearly.

Because when you underwrite honestly on the front end, you don't get surprised on the back end.

And that's how you protect your cash flow and your sanity.

So the next time you're reviewing a deal,

don't ask: "How good does this look?"

Ask... "What's this hiding?"