420 West 23rd Street
420 West 23rd Street, New York, NY 10011
Chelsea
BBL 1007207501 · BIN 1012691
- Year built
- 1985
- Type
- Condominium
- Units
- 39
- Floors
- 11
- Landmark
- No
- Pets
- Permitted for owners; not permitted for renters, per listing records
Every recorded sale at this building, 2003–2026
Price-per-square-foot over time, the line- and floor-premium curves, and every recorded sale.
- Median $/sf
- $1,667
- Listing discount
- 1.1%
- Recorded sales
- 50
- On record
- 2003–2026
West 23rd Street between Ninth and Tenth Avenues is one of Chelsea's signature blocks — the full London Terrace blockfront on the north side, 1850s rowhouses and the Chelsea Historic District Extension threading the south — and 420 West 23rd Street is the block's mid-1980s condominium, a structural rarity in a neighborhood where the surrounding pre-war stock is overwhelmingly cooperative or rental. For buyers who want this specific block with condominium transfer mechanics — no board interview, investor-friendly resale and rental framework subject only to a standard right of first refusal — the building occupies a position with few local substitutes.
The building is documented unusually well for its vintage because the original offering plan is on file in The Roebling Research Library. The sponsor, 420 West 23rd Street Associates, assembled the site through a controlled corporation in December 1982 and delivered a ground-up, poured-concrete building of 39 residential units over a base of 8 professional suites, designed by Wechsler, Grasso, Menziuso Architects. The plan's engineering detail — two gas-fired boilers, separately metered unit electric, concrete balconies at the end bays — describes a straightforward, conservatively built post-war house rather than a glamour project, and that is precisely how it has traded since: as Chelsea's sensible doorman condo, priced inside both the West Chelsea new-development tier and the London Terrace co-op alternative across the street.
What the location buys has appreciated around the building. When it was finished in 1985, West Chelsea was a warehouse district; today the High Line entrance, the gallery district, Chelsea Piers, and Hudson River Park sit within a few minutes' walk, with the C/E at Eighth Avenue and the 1 at Seventh anchoring transit. The block itself remains one of Chelsea's most protected streetscapes — London Terrace's Tuscan-brick wall on one side, landmarked rowhouses on the other — which is the quiet, durable case for the address.
Architecture and unit composition
The building rises 11 stories plus a penthouse level in brick over a reinforced-concrete frame, with roughly 32,000 square feet of residential area across its 39 units — compact, efficient one- and two-bedroom simplexes in the 685-to-1,000-square-foot range, topped by a duplex line, per the offering plan. The end bays on the street facades carry concrete balconies with sliding glass doors, and select units have terraces; upper floors on the north side face London Terrace's towers and gardens, while south exposures look over the lower historic-district roofscape toward downtown. The professional suites at the base — medical and office condominium units — keep the residential lobby separate and the street frontage active.
Building operations
Full-time doorman and concierge service in a 39-unit building is the operational headline — a staffing ratio more typical of larger houses. The amenity set is modest and useful: rooftop sundeck with open Manhattan views, a garden, resident storage, and a cellar laundry room. There is no parking and no amenity floor. Heat and hot water run from two gas-fired central boilers with unit electric separately metered, per the offering plan; cooling is through-wall. The condominium's offering plan and by-laws are on file in The Roebling Research Library and available to clients during diligence.
Local Law 97
- 2024–2029 annual penalty
- $7,752/yr
- 2030–2034 annual penalty
- $39,550/yr
- Per unit / month range
- $17 – $87
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
The latest available FISP filing classified the facade as Safe — no repairs were required at that inspection. Facade inspections run on a fixed five-year cycle; future inspection, repair, and any assessment decisions remain building-specific.
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.
Management & transfer contacts
- Flip tax
- 1% of gross sales price (buyer)
- Notable fees
- Condo. Seller transfer fee = 1 month common charges; closing $750; app processing $750; condo lease fee = 1.5 month common charges; estate/trust transfer fee $500 each; pets owners only
Recent sales
Recent closings 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.
| Date | Unit | Apartment | Price | PPSF | vs. Ask |
|---|---|---|---|---|---|
| Jul 6, 2026 | 9A | 2 BR · 1 BA · 808 sf | $1,358,000 | $1,681/sf | -2.7% |
| Jul 6, 2026 | 9A | 2 BR · 1 BA · 808 sf | $1,375,000 | $1,702/sf | -1.4% |
| May 6, 2026 | 9B | 1 BR · 1 BA · 700 sf | $937,500 | $1,339/sf | -1.2% |
| Jul 10, 2023 | 8D | 2 BR · 2 BA · 1,045 sf | $1,525,000 | $1,459/sf | -10.0% |
| Dec 6, 2021 | 5D | 2 BR · 2 BA · 1,040 sf | $1,625,000 | $1,563/sf | -5.8% |
| Jul 23, 2021 | 11B | 1 BR · 1 BA · 654 sf | $833,000 | $1,274/sf | +0.0% |
| Jun 3, 2021 | 6A | 1 BR · 1 BA · 808 sf | $975,000 | $1,207/sf | -15.2% |
| Aug 9, 2019 | 6D | 2 BR · 2 BA · 1,045 sf | $1,215,000 | $1,163/sf | +1.3% |
Market read. Most recent trades (2026) cleared a median $1,667/sf across 3 sales. Median listing discount 1.1% 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 1-00720-7501) 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 from recorded condo declarations and offering plans.
What to know if you’re buying
The condo structure is the scarcity. On a block dominated by the London Terrace co-ops and rowhouse stock, this is the doorman condominium: no board interview, conventional financing posture, and a rental framework governed by the by-laws rather than co-op sublet policy. For pied-à-terre buyers, parents buying for adult children, and investors, that is the decision driver — confirm current leasing rules and the renter pet restriction with the managing agent.
Calibrate amenity expectations. This is a service building with a roof deck, not an amenity program. Buyers cross-shopping new West Chelsea product should weigh the staffing ratio and the block against pools and lounges — and the carrying-cost difference. Run the True Monthly Carrying Cost Calculator on the specific unit.
The block is the asset. London Terrace's gardens and protected rowhouses mean the immediate streetscape is about as fixed as Manhattan offers without the building itself being landmarked — and because the parcel sits outside the historic district, your own renovations avoid LPC review.
Verify the fee stack. The 20 percent minimum down convention, any transfer fees, and current building requirements should be confirmed against the by-laws and managing agent at offer stage. The board's right of first refusal is standard but should be timed into your contract calendar.
Professional units shape the base. The medical/office suites at the ground floor are separate condominium units with their own owners; understand the commercial component's share of common charges and any shared-systems obligations during attorney review.
What to know if you’re selling
Market the structural position, not the square footage. The pitch is block-specific: doorman condominium mechanics opposite London Terrace, outside the historic district, minutes from the High Line. Buyers priced out of West Chelsea new development and unwilling to face a co-op board are the natural pool.
Outdoor space is the differentiator. The balcony and terrace lines are the building's premium product in a market where private outdoor space clears fastest — lead with it, and price interior lines to same-line history rather than building averages.
Mansion tax thresholds sit inside the building's range. Much of the building's two-bedroom inventory trades around the $1 million threshold — run the Mansion Tax Calculator at the intended ask and understand how the cliff shapes offers.
Comparable buildings
If you're considering 420 West 23rd Street, also evaluate:
- 410 West 23rd Street (London Terrace Towers) — the co-op alternative directly across the street, at scale and with the amenity program
- 468 West 23rd Street (Chelsea Gardens Condominium) — the boutique 1850s walk-up condo on the same block; character over service
- 148 West 23rd Street (Chelsea Mews) — the east-of-Seventh-Avenue alternative on the same street
- 365 West 20th Street (Chelsea Court Tower) — the comparable inside the seminary blocks
- 245 Tenth Avenue — West Chelsea's gallery-district condo comparison at the High Line
- 515 West 23rd Street (HL23) and 519 West 23rd Street (The Highline 519) — the street's boutique new-generation condos at the High Line end; the price-ceiling comparison
- 503 West 24th Street (The Getty Residences) — the ultra-boutique top of the West Chelsea market, for calibration
The neighborhood
For the full corridor — architecture, schools, transit, and pricing across Chelsea — read The Roebling Team Guide to Chelsea.
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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