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30 West 21st Street [Penthouse floor]

30 West 21st Street [Penthouse floor] is a 5,250 square foot office space in Flatiron, Manhattan, asking $115 per square foot per year, about $50,313 a month. It suits a team of roughly 30 people at 175 sq ft per person. Nomad Group represents tenants only, publishes pricing openly, and has delivered 300+ office buildouts across New York.

5,250 sq ft $115/sq ft/yr fits ~30 Penthouse floor
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Updated 2026-09-30 · a real listing, at its real rent

30 West 21st Street [Penthouse floor], Flatiron office space 30 West 21st Street5,250 sq ft · $115/sq ft

About the building

A Flatiron side-street loft building between Fifth and Sixth: the single-tenant-per-floor product the neighborhood is known for; penthouse conditions like this are rare in the submarket.

What it actually costs

Asking rent
$115 per sq ft per year
Annual
$603,750
Monthly
about $50,313
Per person
about $1,677 a month, at 30 desks

The Flatiron median across Nomad's 6 current listings is $72, this floor asks 60% above that. See everything in Flatiron →

Where it is

30 West 21st Street
Flatiron, Manhattan

Nearest subway, coffee and lunch are all inside a five-minute walk.

N/Q/R/W, 4/5/6, F/M, L at 14th and 23rd

Map showing 30 West 21st Street in Flatiron

How much does 30 West 21st Street [Penthouse floor] cost per month?

Asking rent is $115 per square foot per year. At 5,250 sq ft that is $603,750 annually, roughly $50,313 per month before electricity, which typically adds $2–4 per square foot per year. Rent is a starting point; free rent, improvement allowance and escalation caps are all negotiable.

How many people fit in 30 West 21st Street [Penthouse floor]?

About 30 people at 175 sq ft each, which allows for meeting rooms, phone booths, a pantry and circulation. A denser open-plan layout could take 38; a layout with private offices would suit closer to 23.

Where exactly is it?

30 West 21st Street sits in Flatiron, Manhattan. Transit: N/Q/R/W, 4/5/6, F/M, L at 14th and 23rd. Neighboring submarkets: NoMad, Union Square, Chelsea. The heart of Midtown South and the centre of NYC’s venture-backed tech cluster.

How does the rent compare to the rest of the market?

The median across Nomad's current New York availability is $75 per square foot per year, so this space sits about 53% above the median.

How quickly could a team move in?

A furnished or pre-built floor can be occupied two to four weeks after signing. If the space needs a custom fit-out, expect 10–16 weeks: two to three weeks design, three to four for permits and long-lead items, six to nine construction. Nomad runs both the lease and the buildout, so those phases can overlap.

Beyond rent, what is negotiable on a space like this?

Free-rent months, tenant-improvement allowance, escalation caps, security amount and form, expansion or renewal options, and the restoration clause. On a tenant-only mandate, all of them are argued for you.

What happens between an offer and keys?

Letter of intent, lease negotiation, then buildout or move-in. Furnished floors run two to four weeks after signing; custom fit-outs typically ten to sixteen. Starting design during lease negotiation compresses the calendar.

The team

The people you'll actually deal with

Tenant-side brokers, builders and operators, 300+ New York offices delivered between them.

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Talk to a broker

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Real answers by tomorrow, from the broker for this listing, not a call centre.

  • Same daya broker replies personally, no automated triage
  • Tenant-onlyNomad never represents the landlord
  • Open pricingrent and size published before you talk to anyone
  • 300+ officesdelivered across 2M+ sq ft in New York

Or call 646-688-3158

How many people, and when?

Team size

Move-in

Where should the shortlist go?
Last one, so the list fits your budget.

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