Why small commercial buildings cost more per square foot

The short answer, with the number attached

Nobody asks me what a building costs. They ask what commercial real estate costs per square foot in Fort Lauderdale, or Doral, or wherever they are looking, and they expect one number back. The number they get is usually a city median, and a city median is an average of two populations that never bid against each other.

Here is what the recorded sales say. Across 5,709 arm’s-length commercial sales in Miami-Dade, Broward and Palm Beach counties between 2021 and 2026, buildings under 2,500 square feet sold at a higher price per square foot than buildings over 25,000 square feet in every county and every asset class. Nine markets, nine times the same result. The gap runs from 1.3× in Broward industrial to 2.6× in Broward retail, where the small end cleared $491 per foot and the large end $188.

That is not a rounding artifact and it is not one strange quarter. It is the most consistent pattern in the dataset, and it is not published anywhere I can find, which is the only reason I am writing it up.

Nine markets, nine times the same result

Median price per square foot by building size, size bands in square feet. Recorded arm’s-length sales, 2021–2026, from Miami-Dade, Broward and Palm Beach county records. Every cell rests on at least 15 sales.

Swipe the table sideways to see every column.

Read the Under 2,500 column against the 25,000-and-up column. In Palm Beach, an office building under 2,500 feet has been trading at roughly double the per-foot price of one over 25,000. In Broward retail it is more than two and a half times. The tightest market on the table, Broward industrial, still puts 34 cents of premium on every dollar.

The two counties where the ladder does not fall in a perfectly straight line are Miami-Dade office and Broward office, and I deal with both further down rather than quietly smoothing them out.

The obvious objection, and what happened when I tested it

The first thing an experienced broker will say to this is: you are counting condo units. A 1,400 square foot office suite or a 1,600 square foot warehouse bay is a unit inside a bigger building, not a building, and units price differently because you are buying finished, divided space rather than land and a shell.

It is a fair objection and the data supports the premise. In the under-2,500 band, 44 percent of the sales have no land parcel attached — the signature of a condominium unit, which owns air rather than dirt. In the over-25,000 band it is 1 percent. So the small end of the market genuinely is mostly units.

Then I split the small band in two and priced each half separately. Units with no land: $379 per foot across 801 sales. Small buildings that own their dirt: $382 per foot across 1,002 sales. Three dollars apart. Whatever is driving the size premium, it is not the condominium form.

To be certain, I threw out every unit in the dataset and re-ran the whole ladder on the 4,659 sales that own land. The pattern did not just survive, it got cleaner — every step down, in all three asset classes, with no exceptions at all:

Land-owning parcels only — every condominium unit excluded. 4,659 recorded sales across the three counties, 2021–2026. Sizes in square feet.

Swipe the table sideways to see every column.

That is the version I would put in front of a client. Twelve cells, twelve steps in the right direction, no cherry-picking, condos removed.

What actually drives the gap

Two different buyers, two different math problems

A 1,800 square foot warehouse bay in Medley sells to the person who is going to work in it. They are comparing the mortgage payment against the rent they are paying now, and against what it costs them to keep moving every five years. A 55,000 square foot building on the same street sells to somebody pricing a rent roll against a required return. One buyer is solving for occupancy cost, the other for yield, and the second one has a spreadsheet that says no at a number the first one will pay.

The financing is not the same product

An owner-occupier buying a small building has access to SBA programs that let them in with a fraction of the equity a conventional commercial loan requires. That widens the pool of people who can physically write the offer. Once you are past a few million dollars, you are in conventional or bridge territory, the equity check is much larger, and the number of buyers who can close collapses. Fewer bidders, softer pricing. I am a broker and not a lender — talk to one before you plan around any of this — but the effect on the bidding is something I watch on every deal.

Fixed costs, smaller denominator

A building has costs that do not scale with its size. One roof, one set of entitlements, one survey, one environmental report, one closing, one title policy, one impact-fee fight. Spread those across 1,500 feet and they are a meaningful share of the price. Spread them across 60,000 and they disappear into the decimals.

Small tenants outnumber large ones, and always will

Most businesses in South Florida are small businesses. The demand for a 2,000 foot suite is broad and constant; the demand for a 50,000 foot box is narrow, lumpy and dependent on a handful of companies expanding at the right moment. Depth of demand shows up in price, and it shows up most in the smallest sizes.

You can sell a small building faster

Liquidity is worth money. There are hundreds of buyers in this market for a $500,000 building and a much thinner list for a $12,000,000 one. Look at the median deal sizes behind those Broward retail numbers: $650,000 at the small end against $12.93 million at the large end. Those are not two ends of one market. They are two different markets that happen to share a zoning category.

Where the ladder breaks, and why I am leaving it visible

Miami-Dade office. The 2,500–10,000 band prices above the under-2,500 band, $501 against $449. The explanation is in the building stock: the median small-office sale in Miami-Dade was built in 2001, while the median 2,500–10,000 sale was built in 1961. The small band is full of newer suburban condo suites; the mid band is older whole-building product sitting on land in places like Coral Gables and Brickell-adjacent Miami. Different products, not a broken rule — and note that once units are excluded, tri-county office falls back into a clean line.

Broward office. The 10,000–25,000 band sits at $162 against $177 for the largest band. Those are the two thinnest cells on the whole table, 53 and 67 sales, and a fifteen-dollar gap on samples that size is not something I would build an argument on. I would call those two rows level.

I am publishing both exceptions because a table with no exceptions in it usually means someone filtered until the story worked.

How far down this goes

The pattern is not just a county-level average. It repeats inside individual cities, which is where it actually matters to you. West Palm Beach office runs $576 per foot under 2,500 feet against $204 above 25,000 — 2.8 times, across 101 recorded sales, the widest city spread I found. Doral industrial is the tightest of the big industrial submarkets at $346 against $252. West Palm Beach office, Delray Beach retail and Hialeah industrial each carry their own full ladder now, and there are sixty of these city-and-type breakdowns on the site with the sale counts printed next to every figure.

Does the same premium show up in rent?

I represent tenants for a living, so this is the first question I asked myself, and the honest answer is that I cannot show you the same table for rent. Leases are not recorded. There is no public deed for a rent number the way there is for a sale price, which is exactly why sale data is the only place a claim like this can be checked by anyone other than the person making it.

What I will say from doing the deals is that the shape is similar but the mechanism is different. Small suites and small bays do carry higher asking rents per foot than big blocks in the same building, and landlords will tell you plainly why: dividing space costs money, small tenants turn over more, and the leasing effort per square foot is far higher on ten 2,000-foot deals than on one 20,000-foot deal. That is an opinion formed across deals, not a number pulled from a dataset, and I would rather label it that way than dress it up.

Where it matters practically: if you are weighing whether to take more space than you need today in order to get a lower rate per foot, the per-foot saving is real, and so is the cost of carrying square footage you are not using. I go through that trade in how much space you actually need.

What to do with it

If you are buying

Stop asking what the city trades at. Ask what your size band trades at, then ask how many recorded sales sit behind that answer. If a broker quotes you a per-foot number without a size attached, the number is describing a market you may not be shopping in. And run the comparison the other direction too: a 12,000 foot building at $250 a foot is $3,000,000, while two 5,000 foot buildings at $310 are $3,100,000 for less space and twice the closing costs. Sometimes the premium is worth paying for the fit. Sometimes it is just a premium.

If you are selling

The size band you sit in tells you which buyer list your broker should be working. Under about 10,000 feet, the best price almost always comes from an owner-user — a business that wants the building for itself and will pay for the fit rather than the yield. Marketing that building to investors is how it ends up priced off a cap rate it did not need to be priced off. Above 25,000 feet the reverse is true, and the marketing needs to lead with the income, not the finishes.

If you are refinancing or just curious what you own

Pull the size band first, then the middle-half range inside it, and only then argue about your specific building. If you want me to do that for a particular address, I will run it against the recorded comps and tell you where it lands, free and with no obligation, through the value-my-property tool. I will also tell you when the comps are too thin to say anything useful, which happens more often than the industry admits.

How I built this, so you can argue with it

Every figure here comes from recorded arm’s-length sales pulled from Miami-Dade, Broward and Palm Beach county records — closed transactions with a deed behind them, not asking prices and not appraisals. I excluded anything under $20 or over $3,000 per square foot as a data error or a non-arm’s-length transfer, and anything with no building area recorded. Every cell published rests on at least 15 sales; where a band had fewer, I left it out rather than filling the hole. All figures are medians, not averages, because a single $48 million tower would otherwise rewrite a whole row.

What this cannot tell you is what your building is worth. A median describes a population. Inside any one of these bands the middle half of sales still spans a wide range — condition, loading, frontage, parking, zoning and how the deal was negotiated all move a specific building further than its square footage does. Use the band to know which conversation you are in. Use a broker to find out where you sit inside it.

County-level context for each of the three markets sits on the Miami-Dade, Broward and Palm Beach hubs, and if you are heading toward a sale rather than a purchase, start with how I sell commercial property and how to price it to actually sell.

Frequently Asked Questions

Do small commercial buildings really cost more per square foot than large ones?

Yes, and consistently. Across 5,709 recorded arm's-length commercial sales in Miami-Dade, Broward and Palm Beach counties between 2021 and 2026, buildings under 2,500 square feet sold at a higher median price per square foot than buildings over 25,000 square feet in every one of the nine county-and-asset-class combinations. The premium runs from 1.3 times in Broward industrial to 2.6 times in Broward retail.

Is the size premium just an artifact of counting condominium units?

No. It is a fair objection, because 44 percent of the under-2,500 SF sales have no land parcel attached, which is the signature of a condo unit. But splitting that band in two shows units at a median of $379 per square foot and land-owning small buildings at $382 per square foot, three dollars apart. Removing every unit from the dataset and re-running the ladder on the remaining 4,659 land-owning sales makes the pattern cleaner, not weaker: industrial $279 down to $190, office $420 down to $219, retail $488 down to $234.

Why does a smaller commercial building cost more per square foot?

Four things stack up. Small buildings sell to owner-users pricing against the rent they would otherwise pay, while large buildings sell to investors pricing against a required yield, and the owner-user will pay more. Small buildings qualify for financing programs that need far less equity, so more people can physically make the offer. The fixed costs of any transaction spread over fewer square feet. And there are vastly more small businesses looking for space than large ones, so the demand is deeper at the small end.

Which South Florida market has the biggest size premium?

Broward retail, at the county level: $491 per square foot under 2,500 SF against $188 over 25,000 SF, a 2.6 times gap across 622 recorded sales. At the city level the widest spread I found is West Palm Beach office, where under-2,500 SF sales cleared a median $576 per square foot against $204 above 25,000 SF, 2.8 times, across 101 sales.

Does the pattern hold for industrial and warehouse space?

Yes, though it is the tightest of the three asset classes. Broward industrial is the narrowest cell on the table at 1.34 times, Miami-Dade industrial at 1.41 times and Palm Beach industrial at 1.77 times. Excluding condo bays entirely, tri-county industrial runs $279 per square foot under 2,500 SF down to $190 over 25,000 SF.

Are there exceptions to the size premium in the data?

Two, and both are published rather than filtered out. In Miami-Dade office the 2,500 to 10,000 SF band prices above the under-2,500 band, $501 against $449, because the small band is largely newer condo suites with a median year built of 2001 while the mid band is older whole-building product with a median year built of 1961. In Broward office the 10,000 to 25,000 band sits at $162 against $177 for the largest band, but those are the two thinnest cells on the table at 53 and 67 sales, and I would call them level.

Does the same premium apply to rent as well as sale price?

Leases are not recorded in Florida, so there is no public dataset to check that against the way there is for sales, and I will not publish a rent version of this table I cannot support. From doing the deals, the shape is similar for a different reason: dividing space costs money, small tenants turn over more often, and the leasing effort per square foot is much higher on small suites. That is a broker's read, not a measurement.

How should I use this when buying or selling a commercial building?

If you are buying, ask what your size band trades at rather than what the city trades at, and ask how many recorded sales sit behind the answer. If you are selling under roughly 10,000 square feet, the best price usually comes from an owner-user who wants the building for their own business, so marketing it only to investors leaves money on the table. Above 25,000 square feet the reverse is true and the income has to lead.