What Number Do You Check First on a Rental?

Question

When analyzing a potential rental, what's the first number you look at?

Purchase price?

Rent?

Taxes?

Cash flow?

Debt service?

Something else?

I'm curious whether experienced investors have developed a consistent order for evaluating a property.

Patrick O'Sullivan · Answer

I usually start with realistic market rent because so much of the analysis flows from that. If the rent doesn’t support the purchase price under conservative assumptions, there’s not much reason to go deeper. Everything else, cash flow, debt service, even purchase price, depends on getting that number right first.

Michele Fischer · Answer

Need to start with solid inputs of expected negotiated purchase price, market rent, costs to bring the units up to our standards, and ongoing costs. With those inputs, I prioritize cash flow per investment dollars, investment $ per rent $, then CAP rate.

Ali Najjar · Answer

As a lender, I’d look at the rent and cash flow first to get an idea of the debt service the property can support. From there I’d work backward to see what loan amount makes sense.

Ashish Acharya · Answer

Linda, the first number I usually want to understand is realistic rent, because almost everything else flows from whether the property can support itself.

From there, I’d look at purchase price, taxes, insurance, vacancy, repairs, CapEx, management, and debt service. Then I’d calculate the actual monthly cash flow and DSCR rather than stopping at a simple rent-to-price ratio.

The order matters because a property can look attractive on price but still be a weak rental if the rent doesn’t support the full operating cost. The same goes for a high-rent property with heavy taxes, insurance, or HOA costs.

From the tax side, I’d also look at the depreciable basis and whether cost segregation is worth evaluating. But I’d never let a tax deduction make a weak rental look like a good one. The deal should work operationally first.

For me, the sequence is usually: rent, full operating costs, debt service, reserves, then tax impact.

Feel free to DM me, I’d be happy to send over a few resources that might help with building a repeatable rental-analysis process.

Dan H. · Answer

Something else:

1) market: got to research the market to have confidence of the direction of the market. Is there a shortage of housing or surplus? How easy is it to add new housing units? Is the population increasing or decreasing? How diverse is the economy? How desirable is the place to live/work. This will dictate the appreciation which has a tight coupling to rent growth. Rent growth will dictate the cash flow over a long hold much better than using initial cash flow.

2) value add potential including sophisticated value adds. Coupled with a refi, this can provide exponential growth to the ROI. it is my view that a value add is almost a necessity in this RE market.

Good luck

Hayden Gray · Answer

I usually start by asking myself, “What does this thing actually look like once the debt is on it?” So for me, debt service and cash flow are usually the first two things I look at.

After that, I pay a lot of attention to growth potential. I like properties where there’s some way to create additional value beyond just hoping rents go up—adding an ADU, creating a kitchenette or separate living space, finishing unused square footage, or making upgrades that can justify higher rents.

So my rough order is: debt service → cash flow → value-add/growth potential. A property that works today but also gives me a few creative ways to improve the income is usually much more interesting to me.

Alex S. · Answer

Agreed on rent, but I'd pull it from actual signed leases rather than active listings - asking rent on a unit that has sat 60 days will flatter the whole model. Taxes and insurance are my second check, since those are the two that reprice hardest right after closing.

What Number Do You Check First on a Rental?

What Number Do You Check First on a Rental?

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