Rental Comps From the Inspection Driveway: How We Get Investors a Rent Number Fast

by Mike Ferrante

Not long ago I was standing at a duplex in Bedford during a home inspection with nothing but my phone. No laptop, no MLS printouts. The question that mattered most to the purchase was simple: what will these units actually rent for?

A week later wasn't good enough. The answer needed to come while we were still standing there. Here's how we got it, and where a person's judgment changed the number.

Why the rent number matters during the inspection

For an investor, the inspection period is the window where everything is still on the table. You can renegotiate, ask for repairs or walk away. Once that window closes, your options shrink fast.

A repair list only means something when you weigh it against what the property will earn. For example, a $6,000 repair reads very differently on a unit that rents for $1,100 a month than on one that rents for $1,400. That's why the rent number belongs in the inspection conversation, not after it.

What I gave the AI

From my phone, I gave an AI assistant the address and what I knew: the approximate square footage, which I pulled from Zillow because that's what I had on hand, the garage, the updates and the location.

Then I added one instruction that made a real difference. I told it a duplex unit here won't rent for as much as a three-bedroom single-family home in the same area, so its estimate should land below those.

Left on its own, a tool might lump every nearby rental together and hand back a number that looks precise and isn't. Telling it how the local market actually behaves is the same thing you'd do with a new assistant.

What came back

Within a few minutes it had pulled rental listings from sites like Craigslist, HotPads and Realtor.com, including duplexes, apartments and single-family homes nearby. It listed each one with its source, then gave me three numbers: a conservative rent, what it considered market rent, and an aggressive rent.

That's the legwork that used to take an evening of clicking through rental sites. This time it was done before the inspection was over.

Where judgment changed the number

Looking at the estimate, I thought it was low. The AI was working from listing data. I was standing inside the property, and the cosmetic updates put it a step above what it had assumed. So I told it that, and it revised the estimate.

That's the part AI can't do on its own. It hadn't seen the units. It didn't know the finishes were nicer than a typical rental nearby. The tool did the gathering. The person who walked the property made the call.

Asking rents aren't signed leases

Because my tools are set up to cite sources, I can check every comp it used. That matters, because a rental listing is an asking price, not a signed lease. A Craigslist ad might be stale, overpriced or already rented.

We treat online rental numbers as a starting range, then narrow it using condition, layout and what we know about the specific street. And because the research I started on my phone synced to my computer, I picked up the same conversation back at the office and kept going. You get a working range the same day and a fuller analysis once we're at a desk.

How we'd use this with you

If you're looking at a rental property with us, here's the order we'd follow:

Before the offer: a quick rent range so you know whether the property is worth pursuing at all.
During the inspection: refine the range based on actual condition and updates, and weigh it against the repair list.
When you underwrite: build the deal on the conservative number. If it only works at the aggressive rent, it doesn't work. Treat the higher number as upside.

Rent is only half the math. Taxes, insurance, repairs, vacancy and management all come out before you see a dime. A fast rent number is useful because it lets you run the rest of the numbers sooner.

Questions to ask about any rent estimate

Whether it comes from a tool, a website or another agent, a rent number deserves a few questions before you build a deal on it:

Where did each comp come from, and is it still available?
Are the comps really similar, or is a single-family house being compared to a duplex unit?
Does the estimate account for the condition you saw at the inspection?
Who pays utilities in the comps, and who will pay them at this property?

If nobody can answer those, the number is a guess with a decimal point.

Looking at a rental property?

Fast research is only valuable if it's honest. Our job is to get you a number quickly and then make sure it's one you can rely on. If you're looking at a rental anywhere in Northeast Ohio, we're happy to run the rent numbers with you. Schedule a time with me or someone on our team at 21mike.com.

Mike Ferrante
The Mike Team at LPT Realty
www.21mike.com
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