A warehouse is about as plain a building as commercial real estate gets: a steel shell, a slab, some dock doors, and clear height. Two of them can sit on the same road, built the same decade, the same size, and the county can value one far higher than the other. The owner of the high one pays the difference on every tax bill, often for years, without ever knowing there was a gap. The good news is that the same plainness that makes warehouses easy to over-assess also makes them easy to sanity-check yourself in about five minutes. Here is how.
Step 1: find your assessed number and your square footage
You need two figures, and both are public. The first is what the county says your building is worth this year. In Texas it is the appraised value on your notice from the appraisal district. In Florida it is the Just Value on your TRIM notice. In Utah it is the market value on your notice of valuation. The second figure is your building's gross square footage, which is printed on the same county record. We read these off the county's own public records, never anything scraped, and you can pull yours the same way.
Step 2: do the division
Divide the assessment by the square footage. A 50,000-square-foot warehouse assessed at $15,000,000 is carrying $300 per square foot. That single number, dollars per square foot, is the great equalizer. It lets you line your building up against any other warehouse regardless of size, and it is the number every appraiser, magistrate, and equalization board already speaks in.
Step 3: compare to buildings like yours
Now find a handful of genuinely comparable warehouses, the same use, roughly the same age and size, the same submarket, and run the same division on each. If yours sits well above the pack, you may have a case. If it sits in the middle, you probably do not, and we would tell you so.
How far apart can comparable buildings really get? Look at what the public roll shows for one ordinary asset class. We pulled every self-storage facility in Collin County, Texas, off the appraisal roll. The county values them anywhere from $21 to $536 a square foot, with a typical figure around $86. Same business, same county, a 25-fold spread. Square footage does not explain a gap that wide, and warehouses behave the same way.
A wide range is not proof. Two buildings can differ for real reasons, and price-per-square-foot alone hides them. Before we ever tell you that you have a case, we adjust comparables for size, age, and location and compare you to true peers. We do not name owners, and we do not guess.
Why two near-identical warehouses get taxed worlds apart
The county never walked your building. Assessments are produced by mass appraisal, a model run across tens of thousands of parcels at once. Models miss. A warehouse can be flagged with the wrong clear height, an inflated land rate, an out-of-date use code, or simply caught on the high side of the model's error band. None of that is malice and none of it is rare. It is exactly why an individual parcel, checked by hand against real comparables, is so often out of line, and why the county's own records become the evidence that brings it back down.
The lever is different in each state
Once you suspect your $/SF is high, what you do about it depends entirely on where the building sits. The argument that wins in one state is irrelevant in another.
Texas: equal and uniform
Texas runs on comparable appraisals. Under Texas Tax Code §42.26, if your property is appraised above the median appraised value of a reasonable number of comparable properties, adjusted for size, age, and location, the value must be brought down to that median. You are not arguing what your building is worth; you are arguing that you are taxed higher than your neighbors, and the county's own appraisal roll proves it. The case goes to the county appraisal review board. See our Texas overview for how this plays out.
Florida: net of the cost of sale
Florida runs on comparable sales, with a statutory twist. Under Fla. Stat. s.193.011(8), Just Value must be net of the usual and reasonable costs of sale, customarily about 15 percent. So a correctly assessed warehouse should sit at roughly 85 percent of what comparable warehouses actually sold for. When the assessment meets or exceeds the gross price comparable buildings sold for, it plainly never subtracted those costs, and the county Value Adjustment Board can reduce it. On the public Florida sale file, industrial and warehouse comparables run around $300 per square foot; if your Just Value is sitting at or above that line, the math is doing the arguing. More on Florida and on Miami-Dade specifically.
Utah: equalization in a non-disclosure state
Utah does not make sale prices public, so the sales argument is off the table. Instead, under Utah Code §59-2-1004 you appeal the equalization of the assessment. The evidence is the assessor's own comparable assessed values: when your assessment materially exceeds comparable assessed values, the county Board of Equalization can equalize it down to match. Supply comparables assessed meaningfully below yours and the statutory recipe is satisfied. See our Utah overview.
If your self-check says you might be high
A back-of-envelope $/SF check is a screen, not a filing. The figures here are derived from public records and are not a promise of any outcome. We are a new company and we say so plainly; what we do is run your building against true comparables, apply the right statutory lever for your state, and quote a conservative, real tax-dollar number before anyone signs anything. If the case is real, a licensed or authorized agent in your state files the appeal and represents you at the hearing. The model finds the case; a human files it. You pay only if we win, and in our founding year that fee is 10 percent of your first-year savings, with no upfront cost. If your warehouse is in the middle of the pack, we will tell you that too, for free.