17 East 17th Street, Flatiron/Union Square

Is this the same East 17th Street as the historic rowhouse district?
No. The East 17th Street/Irving Place Historic District is a separate cluster of nine rowhouses at numbers 104 to 122, several blocks east near Irving Place, designated in 1988. 17 East 17th Street sits in the Ladies’ Mile Historic District instead, designated in 1989, which covers a much larger commercial and loft district. Searching “17th Street historic district” without the address can land you on the wrong building’s record.

Building Identity: Why the Unit Count Doesn’t Match

The building is a seven- or eight-story pre-war structure completed in 1900, per the public tax-parcel record for the penthouse unit, later converted to condominiums. Where sources split: one platform’s facts panel lists 5 units while its own meta description says 6; a second lists 3; a third lists 5. None publish a Certificate of Occupancy number or a condo declaration to back the count.

Why This Kind of Small-Building Gap Happens

Small pre-war conversions like this one are prone to count drift. A sponsor’s original condo declaration can list one unit count, a later combination or subdivision of floors can change it without every platform re-scraping the update, and building-class codes sometimes get pulled from an adjacent, similarly-numbered building during data ingestion. A buyer’s attorney should confirm the current unit count against the condominium’s offering plan or an ACRIS declaration before treating any platform’s number as final.

Cost to Own Here

The clearest public cost data comes from the building’s most-transacted unit, the triplex penthouse. Its common charges run $2,996 a month. Its assessed property value climbed from $1,221,750 in 2014 to $1,675,416 by 2018, a jump that lines up with the building’s condo conversion and the resulting reassessment, and its property tax bill moved from $43,400 in 2014 to $211,303 in 2018 over the same span.

A minimum down payment figure of 20% has been cited by a brokerage covering this building; that number wasn’t independently checked against a lender disclosure, so treat it as a starting assumption and get current financing terms from a lender before budgeting around it.

What’s the minimum down payment to buy here?
One brokerage covering the building cites roughly 20%, typical for a small pre-war condo conversion without a co-op board’s stricter reserve rules. Confirm the current figure with a lender, since it wasn’t independently verifiable against a disclosure document for this page.

Sales History and What It Actually Shows

The fullest public transaction record belongs to the penthouse: listed for rent at $35,000/month in May 2020, switched to a $8,999,500 sale listing two months later, cut to $7,999,500 by January 2021, put under contract in March 2021, and closed at $7,500,000 that July, a six-month stretch from asking price to closing at roughly 6% below the final list price. That closing price works out to $1,889 per square foot on 3,971 square feet.

At the other end of the building, a full-floor unit of roughly 1,500 square feet was priced at $2,695,000 in the most recent listing data captured here, about $1,797 per square foot, within a few percent of the penthouse’s per-square-foot number despite a price difference of nearly $5 million. The total price difference between the two units traces to square footage and private outdoor space.

How many units does 17 East 17th Street actually have?
Public platforms show 3, 5, or 6 depending on the source, and none link to a DOB or ACRIS filing to settle it. Treat any single number you see elsewhere as provisional until it’s checked against the condominium’s official declaration.

Landmark Status: What Ladies’ Mile Means for an Owner Here

The building sits inside the Ladies’ Mile Historic District, designated by the New York City Landmarks Preservation Commission on May 2, 1989, an irregular 28-block district of roughly 440 buildings running from about 15th to 24th Street. Practically, that status means any exterior alteration, a window replacement, a new storefront, rooftop additions visible from the street, needs LPC review before a DOB permit can be issued, on top of the normal approval process a non-landmarked building would face. Interior renovations, including the kind of gut renovation the penthouse underwent before its 2021 sale, generally fall outside LPC’s jurisdiction as long as nothing visible from the street changes.

Is 17 East 17th Street landmarked, and does that affect renovations?
Yes, it sits within the Ladies’ Mile Historic District. Interior work is typically unaffected; anything altering the building’s exterior appearance needs LPC sign-off before permitting, adding review time a non-landmarked building wouldn’t face.

Zoning and Building Use

One brokerage listing for this address cites a manufacturing-derived zoning designation and a small commercial component within the building, consistent with how many Ladies’ Mile loft buildings were originally zoned before residential conversion. That code wasn’t independently confirmed against the city’s zoning map for this page. A buyer weighing mixed residential/commercial condo governance, shared board votes, insurance splits between residential and commercial portions, should pull the current zoning designation directly.

Location and Transit

The building sits within a few blocks of the L, 4/5/6, N/Q/R/W, F/M, and 1/2/3 lines, plus PATH service, putting Union Square, Chelsea, and NoMad within easy walking distance.

Nearby Schools

Public school ratings near the address, per GreatSchools: Sixth Avenue Elementary (PK–5) rates 8/10 about 0.2 miles away, Simon Baruch (JHS 104, grades 6–8) rates 8/10 about 0.6 miles away, and The Clinton School (grades 6–12) rates 9/10 roughly 0.1 miles away.