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Cooperative · 1897
30 East 21st Street
30 East 21st Street, New York, NY 10010
Buildings·Flatiron·Cooperative

30 East 21st Street

30 East 21st Street, New York, NY 10010

Flatiron

BBL 1008490055 · BIN 1016220

CorridorFlatiron
At a glance
Year built
1897
Type
Cooperative
Units
13
Floors
9
Landmark
No
Amenities
Elevator and intercom. No doorman. This is a self-service loft building
The Data Room

Every recorded sale at this building, 2003–2025

Price-per-square-foot over time, the line- and floor-premium curves, and every recorded sale.

Median $/sf
$1,164
Listing discount
2.7%
Recorded sales
16
On record
2003–2025

The blocks between Broadway and Park Avenue South in the low 20s were built out in the 1890s as the northern edge of Ladies' Mile — dry-goods stores below, manufacturing and showroom lofts above, in a dense run of masonry buildings that went up within a few years of each other. 30–32 East 21st Street is one of them: nine stories of brick in a neo-Renaissance idiom, designed by Ralph S. Townsend in 1897–1898 for John F. Scannell, a developer who built several speculative loft buildings in the district in the same years.

What makes it worth a buyer's attention now is not the facade but the arithmetic behind it. Thirteen residences occupy roughly 23,700 square feet of residential floor area. That is an average near 1,800 square feet, in full-floor and half-floor plates, in a building with a 50-foot street frontage and a 102-foot depth. Loft co-ops of this kind — small, quiet, structurally generous — are the scarcest product in the Flatiron market, and the reason is regulatory rather than architectural: the lot is zoned M1-5M, residential FAR here is zero, and the building's existing bulk already exceeds what the commercial FAR would permit. Nothing like it can be built again on this block.

The third fact, and the one most likely to surprise a buyer, is the ownership structure. This is not a single cooperative corporation. In April 1982 the building's owner conveyed it to two corporations at once — a residential cooperative and a separate commercial corporation — under a declaration recorded at the same time. Forty-plus years later, the commercial component still trades independently: the ground-floor commercial interest changed hands in January 2025 in an entity-to-entity transfer, and the commercial corporation carried its own bank financing in a 2021 recording. A buyer here is buying shares in the residential corporation, not in the building as a whole, and the relationship between the two corporations — cost sharing, roof and facade responsibility, voting, and the treatment of the commercial mortgage — is the single most important thing counsel should read.

Architecture and unit composition

Townsend's elevation is brick with neo-Renaissance detail, nine stories over a commercial base, on a 50-foot frontage. The building sits inside the Ladies' Mile Historic District, designated by the Landmarks Preservation Commission, and any exterior work — windows, storefront, facade repair, rooftop equipment visible from the street — requires an LPC permit in addition to a DOB one. That is a real constraint on alteration timelines and budgets, and it is also the reason the block's streetwall has survived intact.

Inside, the residences are lofts in the literal sense: large open plates with masonry bearing walls, high ceilings, deep floor plans and light concentrated at the front and rear rather than distributed. The recorded transfer history shows units lettered A and B on the lower floors, single-letter designations on several upper floors, and a penthouse at the top — a mix of half-floor and full-floor homes consistent with the 13-unit count over nine stories with commercial space at the base. Renovation work filed on individual units over the past fifteen years is consistent with conventional residential fit-outs rather than raw-space work.

Two features of the filing record are worth flagging because they bear on what a buyer is actually acquiring. Department of Buildings applications on this building carry inconsistent existing-occupancy codes — some filings show "RES," others show "COM," and dwelling-unit counts on filings range from seven to thirteen depending on the year and the applicant. And in November 2000 an alteration application to convert two commercial lofts in Use Group 6 into two Class A apartments in Use Group 2 was filed and disapproved. Neither of those is evidence of a problem, but together they mean the certificate of occupancy should be pulled and read before contract, and the specific residence's legal status confirmed against it.

Ownership structure

On April 15, 1982 the property was conveyed out of the prior ownership to 30 East 21st Street Owners Corporation (residential) and 30 East 21st Street Commercial Corporation (commercial), and a declaration establishing the arrangement was recorded by the outgoing owner. Both corporations appear together on the building's recorded financing: a 2013 mortgage consolidation with a commercial bank in the amount of $1,150,000 named both, and a 2021 consolidation in the amount of $1,300,000 named the commercial corporation.

Two practical consequences follow. First, the "underlying mortgage" question here does not have a single answer — a buyer should ask the managing agent specifically for the residential corporation's own debt, balance and maturity, not for a combined figure. Second, capital work on the shared building envelope is governed by whatever the 1982 declaration says, and in a nine-story landmarked masonry building with a recurring Local Law 11 obligation, that allocation matters. The Department of Buildings record shows facade repair filings in 2016 and sidewalk-shed and pipe-scaffold permits in 2016 — a normal cycle for a building of this age, and normal cost exposure.

The ground-floor commercial space has run as a restaurant use since at least 2003, when a change of occupancy from art gallery and offices to an eating and drinking establishment was filed and signed off. Buyers taking a lower-floor residence should ask about kitchen exhaust, delivery hours and vibration.

Policy framework

Ownership form: Cooperative. Purchase requires a board package and an interview. Because this is a small building with a separate commercial corporation, expect the package to be reviewed by a board of shareholders rather than by an institutional committee, and expect the timeline to be governed by their availability.

Financing: 20 percent minimum down per listing records — permissive by cooperative standards, and typical of downtown loft buildings.

Post-closing liquidity: Not published. Small loft co-ops vary widely on this; ask the managing agent directly rather than assuming the downtown norm.

Subletting: Not documented in public records. In a 13-unit building the sublet policy is set by a very small board and can change with its composition. Get it in writing before contract if your plan depends on it.

Flip tax: Not documented in public records. Confirm with the managing agent before pricing a sale.

Pied-à-terre, trusts and LLC ownership: Not documented. The recorded transfer history shows both individual and trust ownership among the residential shareholders, which suggests trusts have been accepted at least on occasion, but that is an inference from recorded transfers and not a statement of policy. Ask.

Pets: Not documented in public records.

Real estate taxes: No abatement. All three J-51 benefits have expired, the last of them in tax year 2012. Underwrite the full tax line.

Local Law 97

Carbon-penalty exposure
🟠
Material — penalties in current period, escalating in 2030
2024–2029 annual penalty
$11,799/yr
2030–2034 annual penalty
$40,356/yr
Per unit / month range
$76 – $259

Source: NYC LL84 benchmarking and PLUTO · The Roebling Research Library. City record last verified September 2026.

See full Local Law 97 analysis — emissions history, scenarios, methodology →

Facade safety — Local Law 11

Local Law 11 / FISP · last inspection 2020–25
SWARMP
What this means for you

The latest available filing classified the facade as SWARMP — Safe With A Repair and Maintenance Program: the engineer identified conditions requiring monitoring or repair before the next inspection cycle. The scope, timeline, and how the building funds the work are building-specific — we review the filings and board materials for you.

Inspection history
2005–10
Safe
2010–15
SWARMP
2015–20
Safe
2020–25
SWARMP
2025–30
Due
Next report due
by Feb 2027
Assessed · 2005–10 to 2020–25
$8,000 in filing penalties
payment status not in the record
The three grades, in buyer terms
SafeLatest filing: Safe — no repairs required at that inspection.
SWARMPLatest filing: repairs required before the next inspection cycle.
UnsafeLatest filing: unsafe conditions requiring corrective action.
How to read this, and where it comes from

QEWI = Qualified Exterior Wall Inspector — the licensed engineer the city requires to sign the report (the independent expert, not the managing agent).

Penalties shown are amounts DOB assessed against filings on record across 2005–10 to 2020–25. The FISP dataset does not record whether they were paid, contested or remain open, so treat the figure as history rather than a current balance and confirm the building’s standing with the managing agent.

Source: NYC DOB facade filings (FISP) · The Roebling Research Library. City record last verified September 2026.

See the full facade history →

Recent sales

Recent transfers at this building, curated by The Roebling Team research desk. Prices are the transfer amounts recorded with the NYC Department of Finance; apartment-level detail is checked against the building’s own file in The Roebling Research Library before publishing.

DateUnitApartmentPricePPSFvs. Ask
Dec 4, 20253B
1 BR · 2 BA · 1,900 sf
$2,150,000$1,132/sf-10.2%
Oct 7, 2022PH
3 BR · 2 BA
$3,850,000-22.9%
Jun 14, 20213A
2 BR · 2 BA · 1,600 sf
$1,890,000$1,181/sf-5.3%
Mar 4, 20207A
2 BR · 2 BA · 1,600 sf
$1,898,000$1,186/sf+0.0%
Apr 30, 20127A
2 BR · 1,600 sf
$1,762,500$1,102/sf-2.1%
Sep 2, 2011PH8A
2 BR · 1,500 sf
$1,675,000$1,117/sf-6.9%
Sep 8, 20103B
2 BR · 2,000 sf
$1,650,000$825/sf-2.7%
Nov 4, 20095B
2 BR · 1,875 sf
$1,955,000$1,043/sf-2.0%

Market read. Most recent trades (2025) cleared a median $1,164/sf across 1 sale. Median listing discount 2.7% from the last ask — a recurring negotiation gap worth pricing into any offer or listing strategy.

The retrade record

Lines that have traded more than once in the public record — the building’s appreciation arc, apartment by apartment.

3A · 1,600 sf+51%
$1,252,000 ($835/sf) 2004$1,890,000 ($1,181/sf) 2021
PH8A · 1,500 sf+16%
$1,450,000 ($967/sf) 2004$1,675,000 ($1,117/sf) 2011
7A · 1,600 sf+8%
$1,762,500 ($1,102/sf) 2012$1,898,000 ($1,186/sf) 2020
View all 16 recorded transfers, sortable

Full closing history with price-per-square-foot over time, the complete retrade record, and every line that has traded.

Sales sourced from NYC Department of Finance recorded transfers (BBL 1-00849-0055) and verified listing data. Apartment-level facts (line, condition, asking-price context) curated and cross-verified by The Roebling Team research desk. Not all transactions cross-verify with ACRIS records — sponsor and LLC purchases sometimes record at stipulated values rather than market price; square footage on co-ops is not officially recorded, figures shown are approximate.

What to know if you’re buying

Read the 1982 declaration before you read the financials. Two corporations share this building, and how costs, capital work, the roof, the facade and voting are allocated between them is set out there and nowhere else. Ask separately for the residential corporation's own debt, balance and maturity; the recorded financing names both corporations in one instrument and the commercial corporation alone in another, so a combined figure tells you nothing about your maintenance.

Pull the certificate of occupancy. DOB filings on this building carry inconsistent occupancy codes and dwelling-unit counts, and a 2000 application to convert two commercial lofts to Class A apartments was disapproved. Confirm the specific unit's legal residential status on the face of the CO.

Budget for landmark constraints. As a contributing building in the Ladies' Mile Historic District, windows, storefront and facade work require LPC approval — longer timelines and higher costs on both building-wide and unit-level exterior work.

There is no abatement and no doorman. All three J-51 benefits expired, the last in 2012, so taxes are full. And this is a self-service building — elevator and intercom, no staff at the door. Both belong in the monthly comparison against the doorman condominiums a block away.

Test the ground floor. A restaurant use has occupied the base since at least 2003. Visit a lower-floor residence in the evening.

What to know if you’re selling

Lead with the plate and the scarcity. Roughly 1,800 square feet of average residential area in a nine-story 1898 loft building on a landmarked block, in a zoning district where residential FAR is zero, is an argument no new building can make. Name the architect and the district precisely — Ralph S. Townsend, 1897–1898, contributing building in the Ladies' Mile Historic District, all of it verifiable from the Landmarks Preservation Commission's own records.

Get ahead of the two-corporation structure. Buyers' counsel will find it. Presenting the declaration and the residential corporation's own financials up front converts a diligence surprise into a non-issue.

Comparables are thin by design. With thirteen units and infrequent turnover, pricing has to be built from the loft market on the surrounding blocks rather than from the building's own history. Run the Renovation Cost Calculator against condition before setting an asking price.

Comparable buildings

If you're considering 30 East 21st Street, also evaluate:

The neighborhood

For the full corridor — architecture, schools, transit, and pricing across Flatiron — read The Roebling Team Guide to Flatiron.

Preparing a board package for this building?

The full playbook — what goes in the package, how boards read your financials, the interview, and the timeline — plus sample cover, reference, and personal letters you can adapt.

How to read the facts on this page. Items attributed to an offering plan describe the building as it was offered at that filing — unit mix, square footage, the amenity program as planned. They are not a statement about how the building operates today. Tax and compliance figures are sourced separately to current City records and carry their own dates. House rules, staffing and fee policy can change by board resolution without any public filing: treat every policy line here as a starting point for diligence and confirm it with the managing agent.

Considering a move at 30 East 21st Street?

Request a private building brief with the relevant comparable sales, current and off-market availability, and an apartment-specific view of value.

Prefer to speak directly? Schedule a consultation →
Corey Cohen, Principal · The Roebling Team at Compass
646.939.7375 · c.cohen@compass.com
Considering a sale?

Own an apartment here? See what it would sell for.

A Private Pricing Opinion — what your apartment at 30 East 21st Street would likely sell for today, what it costs to sell, and what you’d walk away with — reviewed personally against condition, exposures, renovation quality, and the competition actually on the market.