An appraisal that comes back low is arithmetic, not a judgment on your building. The arithmetic has exactly two inputs.
An apartment building is not valued like a house. Nobody looks at what the place down the street sold for and adjusts for your kitchen. Your building is valued as an income stream. Take the net operating income, divide it by the cap rate, and that is your value. Two inputs, and nothing else enters it.
One of them you control. The other one you do not. Owners spend the argument on the wrong one.
Input one: your income, already marked down
The income in that formula is not the income on your books. It is the income the lender rebuilt, the same version described in How to Refinance a Small Apartment Building.
Take the 12-unit example with $480,000 in gross rents. Your vacancy runs at 3 percent because the building is full. The underwriter uses 5 percent, because the file has to survive a normal year rather than your best one. You pay no management fee because you self-manage. The underwriter adds one at 6 percent of gross rents, because the building has to carry that cost under any owner.
Those two entries move net operating income from $313,600 to $275,200. A $38,400 markdown, and it lands before the appraiser has looked at a single comparable sale.
Neither adjustment says anything is wrong with your operation. They are assumptions about the building, not about you.
Input two: the cap rate, which owners underestimate
A cap rate is the market’s price on risk. Lower cap rate, less perceived risk, higher value. Higher cap rate, more perceived risk, lower value. That is all it is.
Run the same $275,200 of income through two of them.
At a 6 percent cap rate, the building is worth about $4.59 million. The arithmetic: $275,200 divided by 0.06.
At 7.5 percent, the same building with the same tenants paying the same rent is worth $3.67 million. The arithmetic: $275,200 divided by 0.075.
Nothing changed but the market’s opinion of risk, and the value moved $917,000.
You do not control the cap rate. The market hands you a number and you take it.
So the whole fight happens on the income line
When an appraisal comes back low, the useful question is almost never whether the appraiser was fair. Three better questions:
- Was the income clearly documented, so that no figure required interpretation?
- Was every irregular number explained in writing before anyone had to ask?
- Did anything in the file give a reader a reason to be conservative?
You cannot argue with a cap rate. You can absolutely defend your income. Work the side of the formula that responds to work.
What to have ready before the appraiser walks the building
Assemble this in the weeks before the visit, not the morning of.
- A current rent roll that matches your income statement line for line. Disagreement between the two makes both documents unusable.
- A trailing twelve months of actual operating expenses, with every anomaly written up. The quarter with the water leak. The unit that turned over twice.
- Dated records of capital work: the roof, the boilers, the windows, the unit renovations, each with an invoice or an inspection report.
- A short written note on where your rents sit against the market, and what a new owner would do with the ones that lag.
- Access. Unit interiors, mechanical rooms, and the roof. An appraiser who cannot see the new boiler prices the old one.
None of this moves the cap rate a single basis point. All of it protects the income line, and at a 6 percent cap rate each dollar of income carries about $16.67 of value. The arithmetic: one divided by 0.06.
Before you assemble any of it, find out which income lines are already leaking. NOI Leak Check runs through the usual suspects in about ten minutes.
Own a building in Washington DC, Virginia, or Maryland? Cap rates here carry their own local logic, and it shows up directly in your appraisal: Refinancing a DC Apartment Building
Get a read on your building. Request a building audit and I will tell you which numbers an appraiser will question and what documentation answers them.
Frequently asked questions
Why did my apartment building appraise lower than I expected? Value equals net operating income divided by the cap rate. Your income was already marked down by the lender’s vacancy factor and management fee before the appraiser arrived, and the cap rate is set by the market. Neither number is a judgment on your building.
Are apartment buildings appraised using comparable sales? Not primarily. A house is valued against what the place down the street sold for. An apartment building is valued as an income stream, net operating income divided by a cap rate. Sales data informs the cap rate rather than setting the value directly.
Can I dispute a low commercial appraisal? You can dispute the income, not the cap rate. The cap rate is the market’s price on risk and no owner moves it. Documented rent, explained irregular numbers, and dated capital work are the only parts of the formula you can defend.