Rent Comps vs. Sales Comps — Why a Sale Price Needs Both
Updated: May 20
When an appraiser values a 2-4 unit rental in York County, they don't just look at recent sales. They look at two different comp datasets — rent comps (what similar units are renting for) and sales comps (what similar properties have sold for) — and combine them into a single value opinion.
For a seller pricing a property to sell, knowing how each comp set works helps explain why two seemingly-similar properties can have very different sale prices, and where to focus the pre-list work to make the comp picture support the highest defensible price.
What rent comps measure
Rent comps answer the question: "What is a similar unit, in a similar neighborhood, in similar condition, currently renting for?"
For a 2-4 unit property, the rent comp set typically includes:
6-12 actively listed rental units of similar bedroom count, in nearby neighborhoods
Recently leased units (last 6-12 months) where lease data is available
Sometimes including single-family rentals if multifamily comps are sparse
The output: a per-unit market rent for each unit type in the property. A 2-bed unit in good condition in West York might comp at $950-$1,100 in 2026; a 1-bed in similar condition at $750-$900.
What rent comps don't capture: the property's overall age, structural condition, or capex profile. They only address the income side — what the units could rent for in current market conditions.
What sales comps measure
Sales comps answer the question: "What has a similar 2-4 unit property recently sold for?"
The comp set typically includes:
3-6 recently closed sales (last 6-12 months) of similar 2-4 unit properties
Within similar geographic area (same borough/township usually, sometimes broader)
Similar unit count, similar age, similar overall condition
The output: a sale price range that reflects what buyers have actually paid for similar properties.
What sales comps don't capture: the specific rent roll of the subject property. A property selling at the low end of a comp band could be there because rents are below market; a property at the high end could be there because rents are above market. Sales comps alone don't separate condition from rent levels.
The two valuation approaches
Appraisers and buyers combine the two comp sets through two valuation approaches:
Income approach: uses the rent comps to establish market rents, calculates NOI from those rents, and capitalizes NOI at a market cap rate to produce a value.
Example: rent comps support $4,000/month gross potential rent. Effective gross income at 95% occupancy = $45,600. Operating expenses at 40% = $18,240. NOI = $27,360. At a 7.5% cap rate (typical York County small multifamily), value = $364,800.
Sales comparison approach: uses the sales comps to establish a per-unit or per-square-foot value, applies it to the subject property, makes adjustments for differences (age, condition, lot size, parking), and produces a value.
Example: 3 recent comp sales averaged $90,000/unit. Subject is a 4-unit. Base value = $360,000. Adjustments: -$15,000 for older mechanicals, +$8,000 for larger lot, -$5,000 for less off-street parking. Adjusted value = $348,000.
A defensible appraisal usually weights both approaches and reconciles them to a final value. For a 2-4 unit, income approach is often weighted 50-65% and sales comparison 35-50% — the exact weights depend on data quality.
Where the two approaches diverge
Sometimes the two approaches produce significantly different values. Three common cases:
1. Below-market rents. A property with rents that are 15% below market will have an income-approach value that's lower than the sales-comparison value. The income approach is constrained by current rents; the sales approach reflects what comparable properties (with closer-to-market rents) actually traded for.
The buyer's offer in this case is usually somewhere in between — discounted from the sales-comp value to reflect that current cash flow is below market, but not as low as the income approach would suggest because the buyer is buying future cash flow potential.
2. Above-market rents. Rents 15% above market produce the inverse problem. Income approach overstates value because it assumes rents will hold; sales-comparison value is lower because it reflects what comparable properties trade for at sustainable rents.
The buyer's offer in this case is usually closer to the sales-comp value — buyers don't pay full price for unsustainable rent levels.
3. Property in unusual condition. A property significantly above or below typical condition for the comp set. Sales comparison handles this through adjustments, but the adjustments are imprecise. Buyers and appraisers tend to weight the income approach more heavily when condition is non-standard, because the income approach naturally captures condition (better-condition units rent for more in the rent comps).
Where to find comps in York County
For a seller pricing a 2-4 unit:
Rent comps:
Zillow, Apartments.com, Hotpads — active rental listings in your immediate area
Facebook rental groups (specifically "York PA Rental" type groups)
Talking to other landlords in the area (informal but often accurate)
A property manager familiar with the local market (reliable; they price units for a living)
Sales comps:
Realtor.com / Zillow — recent closed multi-family sales
York County Recorder of Deeds — searchable by parcel and date for actual transfer prices
A real estate appraiser familiar with York County multifamily (~$400-$700 for an informal market study)
The local MLS (requires agent access)
Both at once: a real estate appraiser specializing in small multifamily can pull both comp sets and produce a market-value opinion in 2-3 weeks for $400-$700. Worth it for a seller pricing a $200K-$400K property — the cost is rounding error against the price difference between under- and over-pricing the listing.
Three signals that the seller's pricing is defensible
When pricing a 2-4 unit to list (whether traditional or direct-to-buyer):
1. The income approach value (using actual current rents and 40% expense ratio at 7.5% cap) is within 10% of the sales-comparison value. When the two approaches converge, the price is well-supported.
2. The price is at or below the highest 1-2 sales comps and at or above the lowest 1-2 sales comps. Pricing inside the comp range is defensible; pricing outside it requires explanation.
3. The implied gross rent multiplier (price ÷ annual rent) is within typical York County range — usually 6-9x for stabilized small multifamily. A property priced at 11x is hard to support; a property priced at 5x is leaving money on the table.
When all three signals align, the property is priced credibly. Buyers and appraisers reach similar conclusions; financing closes cleanly.
A direct option in York County
I'm Ed Lane, a local buyer in York County actively buying 2-4 unit rental properties directly from owners. The valuation conversation usually starts with both comp sets — what the rents support on income approach, what comparable sales support on sales-comparison approach. The offer reconciles them. Sellers who've thought about both sides of the comp picture usually get to a price faster.
For a plain-language framework on what a direct-to-buyer sale on a 2-4 unit actually looks like, visit yellowhousebuyers.com/free-guide.
If you'd like to talk through your specific situation, reach me through the site or call 717-347-6770.
This piece is general information about valuation approaches for York County small multifamily, not appraisal or legal advice. For specific questions about your property's value, talk to a real estate appraiser familiar with the York County market.
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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.
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