Altair 18 at 32 West 18th Street
32 West 18th Street, New York, NY 10011
BBL 1008197503 · BIN 1087450
- Year built
- 1908
- Type
- Condominium
- Units
- 21
- Floors
- 12
- Pets
- Pets permitted under condominium rules
- Subletting
- Permitted under the condominium framework; confirm at offer stage
- Pied-à-terre
- Generally allowed in condominiums; not confirmed for this building
- Landmark status
- Not an individual landmark; in the Ladies' Mile Historic District
- NYC Landmarks Preservation Commission records, updated February 2026
- Doorman
- Doorman (hours not stated)
Every recorded sale at this building, 2006–2026
Price-per-square-foot over time, the line- and floor-premium curves, and every recorded sale.
- Median $/sf, 2026 to date
- $1,436
- floor-adjusted, 3 sales
- Listing discount
- 0.6%
- Recorded sales
- 54
- On record
- 2006–2026
Own an apartment here? See what it would sell for.
A Private Pricing Opinion — what your apartment at Altair 18 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.
Altair 18 at 32 West 18th Street is a high-end boutique loft condominium in the heart of Flatiron's Ladies' Mile, the late-19th- and early-20th-century commercial district that ran along Sixth Avenue and the surrounding side streets and that NYC LPC designated as a historic district in 1989. The building was constructed in 1908 to a design by Maynicke & Frank as a commercial loft structure, and was converted to residential condominium use in 2006 by Extell Development Company, with CetraRuddy as conversion architect. Today it holds 21 large loft-style apartments across 12 floors.
The building is a strong example of the marquee Flatiron loft conversion: a substantial prewar commercial shell, within a designated historic district, reworked into a full-service condominium with the volume, ceiling heights, and window lines that define the genre, paired with amenities — including a landscaped roof terrace with skyline views — that the boutique loft segment does not always offer. The Ladies' Mile location is one of the most desirable in the Flatiron / Chelsea-edge market: central, architecturally protected, and walkable to Union Square, the Flatiron and Chelsea retail and dining corridors, and the principal downtown transit lines.
For buyers, Altair 18 offers loft-scale interior volume and historic-district character in the flexible condominium ownership structure, at a building scale and finish level that has supported pricing into the building's upper, eight-figure penthouse tier.
Architecture and unit composition
The original 1908 structure is a Maynicke & Frank commercial loft building — grand proportions, a masonry facade, and the deep, light-filled floor plates that loft use required, within what is now the protected Ladies' Mile streetscape. The 2006 conversion by CetraRuddy for Extell reworked the building into a high-end residential condominium, introducing contemporary systems, kitchens, and bathrooms while preserving the loft volume and window lines that give the apartments their character.
In residential use, the building delivers large, loft-style homes — full-floor and near-full-floor configurations with substantial ceiling heights, generous light, and the open plans buyers seek in a converted loft. With 21 units across 12 floors, the building runs to roughly one to two homes per floor, and the apartment program reaches up to a penthouse tier that has transacted at the building's top prices.
Apartment-level features — floor, exposure, light, ceiling height, square footage, and finish package — vary unit by unit and are the primary drivers of value. Evaluate each home on its specific configuration.
Building operations
Altair 18 operates as a full-service condominium with doorman and concierge service, fitness facilities, and a landscaped roof terrace with skyline views; common charges support these services and staffing, with governance through the condominium's board of managers and by-laws.
Specific amenities, staffing levels, and policies on pets and alterations are set in the offering plan and the condominium's governing documents. Prospective buyers should confirm the current rules, including financing, pied-à-terre and investment-ownership terms in the declaration and bylaws, the building's financial profile, the common-charge and assessment history, and the status of building systems directly against current materials during due diligence; board specifics should be confirmed at offer stage.
Application and transaction fees
Fees below are from building management's published schedule, as of September 2026. They are shown as published, item by item; no total is added because the total depends on the transaction. Deposits are listed apart from nonrefundable charges.
Purchase
4 items
Fees and charges
| Item | Paid by | When | Amount | Refundable |
|---|---|---|---|---|
| Application Processing Fee | Paid by Buyer | When With the application | Amount $700 ($750 without a Broker) | Refundable Not stated |
| Credit Check FeePer applicant | Paid by Buyer | When With the application | Amount $150 per applicant/adult applicant | Refundable Not stated |
Deposits
| Item | Paid by | When | Amount | Refundable |
|---|---|---|---|---|
| Move-In Deposit | Paid by Buyer | When With the application | Amount $1,000 | Refundable Refundable |
| Move-Out Deposit | Paid by Seller | When With the application | Amount $1,000 | Refundable Refundable |
Rental or lease
5 items
Fees and charges
| Item | Paid by | When | Amount | Refundable |
|---|---|---|---|---|
| Application Processing Fee | Paid by Tenant | When With the application | Amount $700 ($750 without a Broker) | Refundable Not stated |
| Credit Check FeePer applicant | Paid by Tenant | When With the application | Amount $150 per applicant/adult applicant | Refundable Not stated |
Deposits
| Item | Paid by | When | Amount | Refundable |
|---|---|---|---|---|
| Move-Out Deposit | Paid by Landlord | When With the application | Amount $1,000 | Refundable Refundable |
| Move-In Deposit | Paid by Tenant | When With the application | Amount $1,000 | Refundable Refundable |
Lease renewal
Fees and charges
| Item | Paid by | When | Amount | Refundable |
|---|---|---|---|---|
| Application Processing Fee | Paid by Tenant | When With the application | Amount $300 | Refundable Not stated |
Management updates its schedule without a public filing. The date is when management last updated the page, not when a rule changed. Confirm the current schedule with management before you apply.
Considering an apartment here? Send Corey the listing to discuss the building's costs and purchase requirements.
Own an apartment here? Request an apartment-specific pricing review.
Building staffing and amenities
- Doorman
- Doorman (hours not stated)Source: The Roebling Team's building profile
- Concierge
- YesSource: recent listing records
- Elevator
- YesSource: NYC Department of Buildings elevator records
- Amenities noted
- Fitness room, roof deckSource: The Roebling Team's building profile
Staffing and amenities as our building profile and recent listing records describe them. A feature not listed is not confirmed absent. Outdoor space, parking and some facilities can belong to particular apartments or to a separate owner; confirm access for the specific apartment.
Local Law 97
- 2024–2029 annual penalty
- $0 (under cap)
- 2030–2034 annual penalty
- $64,030/yr
- Per unit / month range
- $0 – $254
- Modeled exposure split equally across 21 units (the residential count on the city's lot record). Not an assessed amount; condominium owners are typically charged by each unit's common-interest percentage.
Source: NYC LL84 benchmarking and PLUTO · The Roebling Research Library. City data last refreshed October 2026.
See full Local Law 97 analysis — emissions history, scenarios, methodology →Facade safety — Local Law 11
The latest available FISP filing classified the facade as Safe — no repairs were required at that inspection. A filed Safe grade is not a guarantee of current condition: owners still maintain the facade and, where required, observe parapets each year. Future inspection timing (Local Law 49 of 2025 changed the cycle framework from October 1, 2026), repair and any assessment decisions remain building-specific.
How to read this, and where it comes from
QEWI = Qualified Exterior Wall Inspector — a licensed professional engineer or registered architect who meets DOB’s FISP qualifications and signs 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 data last refreshed October 2026.
Management & transfer contacts
- Policies and fees
- Condo sale/lease application processing fee $700 ($750 without broker); credit check $150/applicant; move-in & move-out deposits $1,000 each
Recent sales
Sales at Altair 18 are best read on a condominium basis — on price per square foot and on apartment-specific configuration. The building sits in the upper tier of Flatiron / Ladies' Mile boutique loft condo pricing, reflecting the size and quality of the loft homes, the full-service amenity package, the historic-district location, and the developer pedigree of the conversion. The building's larger loft homes have transacted in the mid-to-high seven figures, and its penthouse tier has reached into eight figures.
Value tracks the usual condo variables — floor, exposure, light, ceiling height, square footage, layout, and finish condition — with the loft-and-historic-district premium attaching to the larger, better-lit, well-finished homes. Because the building is small, in-building comparable sales are episodic; pricing any individual apartment requires reading both in-building history and the broader Flatiron loft condo market. Recent specific transactions should be confirmed against current public records at the time of any inquiry.
Recent closings at this building, from The Roebling Research Library. 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.
| Date | Unit | Apartment | Price | PPSF | vs. Ask |
|---|---|---|---|---|---|
| Aug 24, 2026 | 3A | 3 BR · 2.5 BA · 3,007 sf | $3,775,000 | $1,255/sf | -5.5% |
| Aug 13, 2026 | 4A | 3 BR · 3 BA · 3,007 sf | $4,150,000 | $1,380/sf | -2.4% |
| Jun 30, 2026 | 9B | 4 BR · 3.5 BA · 3,300 sf | $5,300,000 | $1,606/sf | -1.8% |
| Feb 8, 2023 | 6A | 3 BR · 3 BA · 3,007 sf | $3,950,000 | $1,314/sf | -14.0% |
| Nov 10, 2022 | 2A | 3 BR · 3 BA · 2,794 sf | $3,550,000 | $1,271/sf | — |
| Jul 6, 2021 | A | 3 BR · 3 BA · 3,007 sf | $5,300,000 | $1,763/sf | -3.6% |
| Jul 1, 2021 | 9A | 3 BR · 3 BA · 3,007 sf | $4,725,000 | $1,571/sf | -5.4% |
| Jul 1, 2021 | 11A | 3 BR · 3 BA · 3,007 sf | $5,300,000 | $1,763/sf | -3.6% |
Market read. Most recent trades (2026 to date) cleared a median $1,436/sf (floor-adjusted) across 3 sales. Floor-adjusted means each sale is restated to a constant mix of floors, so the figure can differ from the plain median of the sales listed above. Median listing discount 0.6% 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.
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 1-00819-7503; each condominium apartment is its own tax lot). Apartment-level facts (line, condition, asking-price context) curated and cross-verified in The Roebling Research Library. Not all transactions cross-verify with ACRIS records — sponsor and LLC purchases sometimes record at stipulated values rather than market price; square footage from recorded condo declarations and offering plans.
What would your apartment rent for?
Enter your apartment and I'll send you what it would rent for, from comparable closed leases at Altair 18 and nearby.
At the recent median sale of $4.15M (3 sales in the past 24 months, since October 31, 2024), a buyer putting 25% down would pay about $171,331 to close, or 4.1% of the price.
- Mansion tax: $62,250
- Mortgage recording tax: $59,916
- Title insurance: $18,675
- Attorneys, lender, building fees, reserves and filings: $30,490
Assumes a resale (the seller pays transfer taxes), a $4,500 attorney fee and a mortgage on the rest.
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What to know if you’re buying
This is a high-end loft condominium — underwrite the size and the finishes. Value tracks square footage, ceiling height, light, and the quality of the 2006 conversion. Confirm as-built square footage and layout, and price per square foot against comparable Flatiron loft condos.
The historic-district location is a feature, with implications. The Ladies' Mile designation protects the streetscape and the building's architectural context; it can also affect facade and exterior alterations at the building level. Factor the protection into both the value and the diligence.
Condominium purchase process. There is no co-op board admission; purchases run through the condominium's application and right-of-first-refusal process. Confirm financing, pied-à-terre and investment-use rules in the current declaration, bylaws and house rules. Our Co-op vs Condo guide covers the distinction.
Diligence the building's finances and systems age. Review the common-charge history, the reserve position, any assessments, and the status of building systems and the roof terrace — even a 2006 conversion is now approaching two decades of service life.
Mansion-tax thresholds may apply. At the building's larger-home and penthouse pricing, mansion-tax cliffs can be in play. Run pricing through the Mansion Tax Calculator.
What to know if you’re selling
Lead with loft scale, amenities, and the historic-district address. The building's structural selling points are large loft homes, a full-service program with a roof terrace, and a protected Ladies' Mile location. Apartment-specific marketing should foreground the home's size, exposure, light, and finish condition.
Price on apartment-level comparables. With a small in-building sample, anchor pricing to recent comparable Flatiron loft condo sales in the building and across the district on a per-square-foot basis.
Condominium review runs through a right of first refusal. There is no co-op board admission; purchases run through the condominium's application and right-of-first-refusal process.
Comparable buildings
If you're considering Altair 18, also evaluate:
- 55 West 17th Street — a nearby Flatiron / Chelsea-edge condominium
- 212 West 18th Street — a Chelsea / Flatiron-edge condominium on the same street to the west
- 30 West 15th Street — a Flatiron / Union Square loft cooperative for buyers weighing the ownership-structure trade-off
- 29 East 22nd Street — a Flatiron / Gramercy boutique loft condominium of comparable register
- 15 Union Square West — the Union Square new-development condominium for buyers comparing the loft register against the tower tier
More Flatiron buildings
- 30 West 15th Street — 1908 co-op
- 31 West 21st Street — 1907 condominium
- 32 West 20th Street — 1912 co-op
- London Clay Townhouse (32 East 22nd Street) — 1920 condominium
- 33 East 22nd Street — 1938 co-op
- 35XV, 35 West 15th Street — 2012 condominium by FXCollaborative (Fox & Fowle / FXFOWLE)
The neighborhood
For the full corridor — architecture, transit, and pricing across Flatiron — read The Roebling Team Guide to Flatiron.
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. Where this page compares one building or neighborhood to another, that is our analysis of the recorded record — it names the measure, the period and the sample it rests on, and it is an observation about medians rather than a prediction about any particular apartment.
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646.939.7375 · c.cohen@compass.com