How Investors Actually Price a Duplex in York County (It's Not What Zillow Says)
- Ed Lane
- Apr 22
- 3 min read
Updated: May 20
Most landlords look at Zillow or pull a Realtor's comparative market analysis (CMA) and assume that number is what a duplex or triplex is worth. For an owner-occupied home, that's mostly true. For a rental property being sold to an investor, the math is different — and the number an investor offers is almost always lower than the Zestimate.
Understanding why helps a lot more than being frustrated about it.
Why owner-occupied math doesn't apply
Zillow, Redfin, and most Realtor CMAs price a property based on recent comparable sales, square footage, bedroom and bathroom counts, and general condition. That approach works well when the buyer is going to live in the house — they're pricing emotionally, pricing for lifestyle, and comparing the house to other houses they could live in instead.
An investor isn't buying a lifestyle. They're buying a cash flow stream wrapped in a physical asset. So the math changes.
The investor pricing formula
Rental property pricing starts with the rent roll and works backward:
Step 1: Gross annual rent. Add up what the property actually collects in rent across all units. A York County duplex pulling $1,200 and $1,150 per month generates $28,200 per year.
Step 2: Real operating expenses. Property taxes, insurance, water and sewer (if landlord-paid), common-area electric, management fees (if applicable), vacancy reserve, and maintenance reserve. For a York County duplex, this typically runs 35-50% of gross rent — so let's say $11,000 to $14,000 per year on a $28,200 rent roll.
Step 3: Net operating income (NOI). Gross rent minus operating expenses. In this example, NOI works out to roughly $14,000 to $17,000 per year.
Step 4: Apply a capitalization rate ("cap rate"). Investors divide NOI by their target cap rate to arrive at a price. In York County, small multifamily commonly trades in the 7-9% cap rate range. At an 8% cap rate, $15,000 of NOI implies a price of roughly $187,500.
Step 5: Adjust for deferred repairs and major systems. Roof age, furnace condition, electrical panel, plumbing, windows, foundation. A duplex that needs a $15,000 roof is worth $15,000 less at closing than one that doesn't.
Where the Zillow gap comes from
The same duplex might Zestimate at $225,000 if the "comparable homes" Zillow pulls are owner-occupied single-families nearby. An investor running the math at an 8% cap rate lands at $187,500. If the property also has a dated furnace and a roof at the end of its life, the investor number might drop to $170,000 or $175,000.
That's not an insulting offer. That's the math of how rental properties actually trade between investors.
What this means for landlords considering a sale
If you're thinking about selling a York County rental, a few things are worth knowing:
1. Your Zestimate is probably not your real price if you're selling to an investor. It might be closer if you list on the MLS and a retail buyer falls in love with the house, but most investors walking the property will price it on the rent roll.
2. Condition matters more than you think. An investor will notice everything — roof, furnace, panel, windows, plumbing, foundation, drainage. Each issue reduces the price by what it will cost to fix or replace. A well-maintained duplex with updated systems will always price higher than a deferred-maintenance duplex, even with identical rent rolls.
3. Rents matter a lot. A duplex where rents are $200 below market is worth substantially less than the same duplex with rents at market. Bringing rents up before selling — through lease renewals or tenant turnover — can meaningfully move the price.
4. Occupancy matters. A fully-occupied duplex with paying tenants prices higher than a vacant one or one with problem tenants. Stable income is what investors are buying.
Running the numbers on your property
If you want a plain-language walkthrough of how investor math actually works — and what a realistic price range might look like on your specific duplex, triplex, or 4-unit — the free landlord guide at yellowhousebuyers.com/free-guide breaks it down.
I'm Ed Lane. I buy 2-4 unit rentals in York County, and I talk to owners directly. If you want a second set of eyes on what your property might trade for, reach me through the site.
Related Reading
Want to talk about your specific situation?
I'm Ed Lane at Yellow House Buyers, LLC. I'm actively looking to buy 2-4 unit rental properties in York County directly from owners. I buy to hold long-term — not to flip, not to wholesale. If you want a no-pressure conversation about your property, here's how to reach me.
Or download the free 2026 York County Landlord's Strategy Guide — it walks all six selling scenarios with the actual math.
Comments