Listing counts below come from a CoStar pull dated August 2026. Availability moves weekly.
A tenant called me back in June, mad at the entire industry. He’d spent 2 months hunting for 2,000 feet in Flatiron, toured 4 spaces, hated 3, lost the 4th to a faster company, and every broker he spoke to fed him the same line: be flexible.
“Flexible how?” he asked me. “Toward what? Based on what?”
Good questions, and most of my industry can’t answer them. Because “be flexible” is usually a broker’s polite way of saying I have nothing for you and I’d rather not admit it. I said it for years myself. It took me an embarrassing amount of time to notice I was handing clients a shrug dressed up as strategy.
So now I hand them a count instead. The table below is a CoStar Group pull of Manhattan office space by size, every available listing in the borough sorted into square footage bands, and it does what no pep talk can. It shows you exactly where your options live at your size, and where they don’t.
Most of the time, they live a few blocks from wherever you were looking.
Manhattan Office Space by Size: The Whole Board
A quick decoder before you read it. The first number in each box counts buildings with availability in that range, and the second counts the listings themselves, since 1 tower on Third Avenue might carry 6 separate spaces. Once you’re touring, the second number is your world.
| Size Range | Midtown | Midtown South | Downtown | Uptown |
|---|---|---|---|---|
| Under 1,000 SF | 149 / 311 | 88 / 153 | 27 / 46 | 94 / 127 |
| 1,000-1,999 SF | 240 / 460 | 125 / 245 | 49 / 84 | 105 / 136 |
| 2,000-4,999 SF | 443 / 1,053 | 239 / 433 | 90 / 279 | 94 / 143 |
| 5,000-9,999 SF | 420 / 1,077 | 201 / 423 | 87 / 248 | 69 / 174 |
| 10,000+ SF | 365 / 1,614 | 174 / 577 | 92 / 531 | 43 / 202 |
CoStar Group office listings for lease, August 2026. Format: properties/spaces.
Manhattan gets deeper as tenants get bigger, with 1 exception we’ll get to, and the spread between markets at the small end is enormous. A tenant hunting under 1,000 feet has 311 options in Midtown against 46 in all of Downtown. Same island, 20 minutes apart on the 4 train, and one of those searches takes a weekend while the other eats a quarter.
Downtown Has 46 Small Spaces, Total
Sit with that number, because it covers everything south of Chambers Street, Wall Street included.
Demand isn’t the issue down there either. Class A rents reached $63.60 in Q2, their best since 2021 (Downtown Alliance), and the Financial District has been leasing at a pace it hasn’t seen in years.
The trouble is what’s happening to the buildings small tenants used to live in. Older Class B and C floors are exactly what developers want for apartments, and Downtown Manhattan has fed more of the city’s conversion pipeline than anywhere else. That pipeline now sits at 19.2 million SF (Avison Young), and every project in it pulls small, cheap space off the board for good.
So if you’ve toured down there and wondered why your broker keeps showing you the same 3 tired suites, he’s out of buildings. So is the neighborhood.
Uptown Works in Reverse
Uptown is the exception I promised, and the pattern up there fools people constantly.
South of 59th Street, inventory grows with size. North of it, the pyramid flips, with 127 spaces under 1,000 feet and only 202 above 10,000. Aka the thinnest big-block market on the island by a wide margin.
That looks like a flaw until you remember what the Upper West Side and Upper East Side are made of. Doctors drive the demand up here, in buildings that were never meant to hold a trading floor, alongside therapists and family offices and the occasional nonprofit with a brownstone floor. Call it 3 or 4 million SF of offices total, in a borough where Midtown alone is 60-some times bigger.
My advice runs 2 directions. A small medical practice hunting near Mount Sinai will find real depth here. A company that needs 30,000 contiguous feet should head south today.
Midtown Wins Every Band, Including Yours
Which brings up the least glamorous finding in the whole pull. Midtown, the market everyone files under bank towers and 11-floor law firm leases, leads every single size band. And its lead is widest at the small end. Under 1,000 feet, it carries 311 spaces. Double Midtown South and roughly 7 times Downtown.
Sheer acreage explains part of that. The better explanation is that Midtown is a dozen markets wearing 1 name, and the label hides how much modest, usable Manhattan office space survives between the trophies. My favorite stretch is West 36th and 37th, where 1920s loft buildings still rent suites in the high 30s a foot on the same subway lines as towers asking 2 and 3 times that.
One caution before you get comfortable. Colliers cut Manhattan availability to 13.0% in Q2, its lowest since October 2020. The cheap end of the market is going first.
Midtown South Looks Fine Until You Zoom In
Midtown South needs a warning label of its own. The district totals look comfortable, and they’ll mislead you, because Hudson Square, SoHo, Chelsea, Flatiron and NoMad have been living through wildly different years under 1 shared name. Availability across Midtown South fell to 12.2% in July, the tightest in Manhattan. Particularly after Anthropic took 466,000 SF at 330 Hudson (The Real Deal).
While I have you, a warning about search results everywhere. Almost 29% of available Manhattan office space has now sat on the market for more than 3 years (Colliers research). Some of it with 8-foot ceilings. Some of it owned by landlords in special servicing who can’t sign a lease without a loan servicer’s blessing. That space pads the availability rate and wastes your afternoons.
Learn to smell it early: if the listing photos look like 2019, they usually are.
Chelsea and the Garment District Are Practically the Same Buildings
All of which sets up the comparison I now open with in first meetings.
One caveat you should hold me to. CoStar has no standalone Flatiron submarket, and Chelsea is the nearest boundary that swallows Flatiron whole. So the left column means Chelsea including Flatiron rather than Flatiron alone.
| Size Range | Chelsea (incl. Flatiron) | Garment District |
|---|---|---|
| Under 1,000 SF | 30 / 48 | 54 / 123 |
| 1,000-1,999 SF | 55 / 109 | 100 / 196 |
| 2,000-4,999 SF | 109 / 195 | 171 / 359 |
| 5,000-9,999 SF | 91 / 176 | 143 / 313 |
| 10,000+ SF | 65 / 229 | 106 / 327 |
CoStar Group, August 2026. Format: properties/spaces.
The Garment District carries 1.5 to 2.5 times the listings at every size, and close to double the buildings in most tiers. Against a neighborhood 2 avenues away with nearly identical loft stock.
Where Did the Chelsea Space Go?
AI companies took it, and they took it fast. Flatiron and Park Avenue South have been the hottest blocks in New York for 2 years running, with AI firms signing over 600,000 SF across Manhattan in Q1 alone. More than they leased in all of 2024 (The Real Deal). Ramp grabbed 285,300 SF at 28-40 West 23rd. Clay took 163,000 SF at 11 Madison.
The run hasn’t cooled either. A data platform called Chalk signed 26,607 SF at 43 West 23rd this July, which pushed that building to 100% leased (Commercial Observer).
A listing count can’t tell you any of that. It shows you the aftermath, and the aftermath is what you’re shopping in. So when a Flatiron landlord seems unbothered by your competing offer, he’s seen the same data you’re reading now.
What’s the Honest Trade?
Both columns follow the same curve, rising with size and dipping a bit at 5,000 to 9,999 before jumping again. Hence, you’re comparing 2 versions of 1 market rather than 2 different animals. Both are prewar loft districts at heart, full of tall windows and the cast-iron columns everyone loves until it’s time to lay out a conference room.
Transit favors the Garment District, honestly, with Penn Station underneath it and more subway lines than any office district in the city.
What Chelsea sells is the address, the galleries and the AI halo, priced at an $83.35 average ask (Cushman & Wakefield). Garment District lofts still open in the high 30s, and a landlord over there with 5 competing vacancies on his own block tends to remember his manners when your lawyer marks up the lease.
How to Shop This Market Without Losing a Season
You’ve got the counts and a neighborhood pair that shows how lopsided comparable markets get. All that’s left is Monday morning. Consider this the version of “be flexible” that comes with evidence attached.
- Size Before Map: Your headcount is a fact, your neighborhood a taste. Let the fact build the shortlist and let taste rank it.
- Ask for the Count on Day 1: Ask your broker to total the listings in your range on your blocks. Under 10 means landlords are choosing you.
- Name a Twin Submarket: The Garment District twins Chelsea, Tribeca twins SoHo, NoMad twins Flatiron. Walk 1 before you call it a compromise.
- Put Class B Back in the Search: A Class A filter can halve your small-size options. Class B leasing ran 28% ahead of last year through June (CoStar via CNBC).
- Date-Check Every Listing: Space marketed for 3 years is marketed that way for a reason. Ask how long it’s sat and who owns it.
What Happened to the Guy Who Wanted Flatiron
He signed on West 38th Street about 5 weeks after that phone call.
The space came with 11-foot ceilings and south light, and the landlord threw in 8 months free plus a build-out. Mostly because 2 rival proposals sat on the table and everyone in the room knew it. When I checked in this spring, he told me the commute from Penn beats his old ride on the 6, and the only person who’s ever asked about the neighborhood is his mother.
Look, I won’t pretend the Garment District is Flatiron. It has fabric wholesalers and tourists and a reputation it earned decades ago. If your brand truly lives or dies on a Madison Square address, then pay for the address with a clear head.
Just understand what the premium buys. Because most of the time it buys lunch options and a better story at parties. All the while the same building sits 2 stops away in triplicate at roughly half the ask.
Your neighborhood and your square footage were never separate decisions. Pick them together, or walk in ready to bend on one, because this market moves whether you’re ready or not. Manhattan ran its strongest first half of leasing since 2002, free rent thinned to 12.4 months, and the 2026 outlook we published in January is aging faster than I’d like.
If you want the real count before you commit your heart, reach out. Pulling it takes us an afternoon, costs you nothing since landlords pay our fee, and it beats 2 months of touring the same 4 Manhattan office spaces.
And if you prefer to snoop around on your own first? The neighborhood guide is right there. I’d start with the submarket you think you hate.
