An investor sent me his underwriting last month on a 12-unit in Benson. His projected rent for the two-bedrooms was $1,250. I asked him where he got that number.

"Zillow says similar apartments are going for $1,200 to $1,300."

That isn't a comp. That's a listing price from a website that has never been inside the unit, doesn't know the condition, and can't tell you whether that $1,300 apartment sat vacant for 60 days before the landlord quietly dropped it to $1,100 and threw in a free month.

Rent comps are the foundation of every investment decision you make. If your comps are wrong, your revenue projection is wrong. If your revenue projection is wrong, your NOI is wrong. And if your NOI is wrong, you overpaid for the building.

Here's how to pull real comps that actually mean something.

Why Zillow and Rentometer Are Unreliable

Let me be clear. I'm not saying these tools are useless. They're useful for getting a ballpark when you know absolutely nothing about a market. But they aren't comps. They're estimates based on asking prices, not executed leases.

The problems:

They show listing prices, not leased prices. A unit listed at $1,300 that leases at $1,150 after 45 days on market and a month of free rent isn't a $1,300 comp. It's a $1,050 effective rent comp. Zillow doesn't know that.

No condition adjustment. A renovated unit with quartz countertops and LVP flooring isn't comparable to a unit with original 1985 laminate and carpet. Zillow treats them the same if they have the same bedroom count and zip code.

Lag in data. By the time expired listings cycle out and new data populates, the market may have shifted. In a fast-moving submarket like Benson, 3-month-old data can be meaningfully different from today's reality.

Geographic averaging. Rentometer especially draws from a radius that may include dramatically different neighborhoods. A half-mile radius in Omaha can cross from B-class product into C-class product, and the rent differential can be $200 or more for the same unit type.

How to Pull Real Comps

Real comps come from real leases. Here's our process.

Step 1: Identify True Comparables

Not every nearby apartment is a comp. A real comparable must match your subject property on these criteria:

Unit type. Same bedroom and bathroom count. A 2-bed/1-bath isn't comparable to a 2-bed/2-bath.

Size. Within 10-15% of the same square footage. A 750 SF two-bedroom competes differently than a 950 SF two-bedroom.

Vintage. Same era of construction, or at least similar building quality. A 1960s brick fourplex isn't comparable to a 2018 wood-frame apartment complex.

Class. Same condition tier. A renovated B-class unit doesn't comp against an unrenovated C-class unit across the street.

Distance. Within one mile for urban submarkets. Within three miles for suburban. Beyond that, you're in a different micro-market with different demand drivers.

Step 2: Call the Property Managers

This is the step nobody wants to do. Pick up the phone.

Call the comparable properties. Pose as a prospective tenant if you need to. Ask:

What's the current rent for a two-bedroom?

Are there any move-in specials or concessions?

What's included in the rent (water, trash, parking, storage)?

How many units are available right now?

How long have the vacant units been available?

That last question is gold. A property with 3 vacant units that have been available for 6 weeks is telling you the asking rent is too high. A property with zero availability and a waitlist is telling you the market rent may be higher than what they're charging.

I make these calls on every deal. It takes about 2 hours for 8 to 10 comps. Those 2 hours are worth more than any software subscription.

Step 3: Adjust for Concessions

Concessions are the hidden variable that distorts every rent comp analysis.

If a comparable property is advertising $1,200/month but offering one month free on a 12-month lease, the effective rent isn't $1,200. It's $1,100. That's a $100/month difference that changes your revenue projection by $1,200 per unit per year.

Common concessions in the Omaha market right now:

One month free on a 12-month lease (most common)

Reduced security deposit ($200 instead of $500)

Waived application fees

Free parking for the first 6 months

Gift cards or move-in bonuses ($200 to $500)

Always convert concessions to effective monthly rent. That's the only number that matters for underwriting. A property offering $1,300 with two months free on a 12-month lease has an effective rent of $1,083. That's a very different number than $1,300.

Step 4: Condition Adjustments

This is where most investors stop being disciplined and start being optimistic.

If your unit has original 1990s finishes and the comp has a full renovation-playbook-for-b-and-c-class-multifamily)-renovation), you can't use the comp's rent without adjusting for condition. Period.

Our adjustment framework for the Omaha market:

Full renovation (new flooring, cabinets, countertops, fixtures, appliances): +$150 to $250/month over unrenovated

Partial renovation (new flooring and appliances, original cabinets painted): +$75 to $125/month

Cosmetic refresh (paint, hardware, light fixtures): +$25 to $50/month

These numbers vary by submarket. In Dundee or Aksarben, the premium for renovation is higher because the tenant base expects it. In South Omaha, the premium is smaller because the market is more price-sensitive.

The adjustment works both ways. If your subject property is renovated and the comp isn't, your achievable rent should be higher than the comp. If your subject is unrenovated and the comp is renovated, your achievable rent is lower. Simple concept, but I see it ignored constantly.

Step 5: Amenity Adjustments

Two apartments can have the same bedroom count, same square footage, same vintage, and same condition, and still rent for different prices based on amenities.

In-unit laundry commands a $50 to $100/month premium over coin-operated or no laundry in the Omaha market

Covered parking or garage adds $50 to $75/month over open lot parking

Central air vs. window units matters more than most people think. Budget $25 to $50/month difference.

Pet-friendly policies expand your tenant pool and support higher rents, but they don't directly comp unless the comparable property restricts pets

Utilities included must be backed out to compare apples to apples. If the comp includes water/sewer/trash at $1,200 and your property doesn't, adjust the comp down by the estimated utility cost ($75 to $125/month for water/sewer/trash in Omaha)

Building Your Comp Report

After you have gathered data from 6 to 10 true comparables, adjusted for concessions, condition, and amenities, you should be able to build a grid that looks like this:

Comp address, unit type, asking rent, concessions, effective rent, condition adjustment, amenity adjustment, adjusted rent

Calculate the average adjusted rent across all comps

Throw out the highest and lowest if they're outliers

The remaining average is your market rent estimate

Our rule: if our projected rent is more than 5% above the adjusted comp average, we need a very specific reason. A planned renovation. An amenity addition. A lease-up strategy that justifies the premium. Without a reason, we're just being optimistic, and optimism isn't a revenue model.

The Mistake That Costs the Most

Here's the most expensive comp mistake I see in the Omaha market.

An investor pulls comps from new construction Class A product and applies those rents to a 1970s Class C acquisition. "The new building down the street gets $1,400 for a two-bedroom, so my renovated unit should get $1,200 easily."

No. Your renovated 1970s unit competes against other renovated 1970s units, not against new construction with fitness centers, rooftop decks, and smart home packages. Different tenant. Different expectations. Different willingness to pay.

Comp against your actual competitive set. Not the building you wish you owned.

The investors who get rent comps right make better offers, underwrite-a-multifamily-acquisition) more accurately, and close deals that actually perform. The investors who rely on Zillow estimates and optimism find out what real market rent is the hard way: with 60 days of vacancy and a price reduction.

Do the work. Make the calls. Adjust the numbers. It isn't glamorous, but it's the difference between a deal that works and a deal that looked like it should have.

For weekly market insights and real operator perspective, catch the Freedom Fighter Podcast on Spotify, Apple, or YouTube.

Tanner Sherman is the Principal and Managing Broker of Top Tier Investment Firm in Omaha, Nebraska. He co-hosts the Freedom Fighter Podcast with Ryan of Avara Investments.

Rent Comps Aren't What You Think They Are