- Year built
- 1999
- Type
- Condominium
- Units
- 15
- Floors
- 7
- Landmark
- No
- Pets
- Pet-friendly under the condominium rules
- Subletting
- Permitted under the condominium declaration
- Pied-à-terre
- Allowed
Every recorded sale at this building, 2004–2026
Price-per-square-foot over time, the line- and floor-premium curves, and every recorded sale.
- Median $/sf (floor-adjusted)
- $1,643
- Listing discount
- 3.9%
- Recorded sales
- 25
- On record
- 2004–2026
Own an apartment here? See what it would sell for.
A Private Pricing Opinion — what your apartment at 129 West 20th 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.
129 West 20th Street — The Chelsea Quarter — is a boutique loft condominium in central Chelsea, on the block between Sixth and Seventh Avenues. Built as an early-20th-century masonry loft building and converted to condominium around the turn of the millennium, it offers 15 loft-style residences in a genuinely intimate seven-story building, on one of Chelsea's most convenient corridors near the neighborhood's galleries, shopping, and transit.
What buyers respond to here is the loft character at a boutique scale. The residences carry the proportions of a converted loft building — spacious layouts, large windows, high ceilings, and wide-plank oak floors — updated with the conveniences buyers expect, including in-unit washer/dryers and central air. With only 15 apartments, the building is low-density and quiet, and the conversion delivered lofts that read as real homes rather than raw space. It is a well-located, well-judged Chelsea loft building rather than a large development.
The building is for buyers who want an authentic, updated Chelsea loft in a boutique condominium on a central block.
Architecture and unit composition
129 West 20th Street is a seven-story early-20th-century masonry loft building, converted to condominium use around 1999–2000. The building reads as a classic Chelsea loft structure on its block — solid, understated, and human-scaled rather than a glass tower.
Inside, the 15 residences are loft-style condominium homes with the open proportions of the original building: spacious layouts, large windows, high ceilings, and wide-plank oak floors, updated in the conversion with in-unit washer/dryers, central air, and walk-in closets. A commercial unit occupies part of the ground level. With so few residences, the specific floor, exposure, and layout of each home drive its value, and the loft geometry gives the better units a genuine sense of scale.
Building operations
129 West 20th Street operates as a boutique loft condominium with an elevator and the practical services appropriate to a 15-residence building. That is a sensible scale — the essentials of a well-run condominium without the overhead of a large tower. Common charges reflect the modest staffing and the converted-loft envelope; buyers should model the full monthly carry and review reserves and any capital history during due diligence, as is prudent for an early-20th-century loft building converted around the turn of the millennium.
Local Law 97
- 2024–2029 annual penalty
- $0 (under cap)
- 2030–2034 annual penalty
- $0 (under cap)
- Per unit / month range
- —
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 filing classified the facade as SWARMP — Safe With A Repair and Maintenance Program: the engineer identified conditions requiring monitoring or repair, with repairs due by the deadline stated in the filing. The scope, timeline, and how the building funds the work are building-specific — we review the filings and board materials for you.
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).
Source: NYC DOB facade filings (FISP) · The Roebling Research Library. City record last verified September 2026.
Recent sales
As a condominium, 129 West 20th Street prices on a price-per-square-foot basis, with floor, exposure, loft proportions, outdoor space, and condition supporting value. Turnover is light for a boutique building of this size; both resale and owner-rental activity occur, but it is an ownership condominium, not a rental building. Apartment-level context — floor, exposure, layout, and condition — drives pricing more than any building average, and the loft character and the central Chelsea location support pricing for residences that present well.
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 |
|---|---|---|---|---|---|
| Jul 1, 2026 | 5C | 1 BR · 1 BA · 949 sf | $1,410,000 | $1,486/sf | -8.7% |
| Apr 30, 2026 | 4B | 3 BR · 2,140 sf | $3,850,000 | $1,799/sf | +0.0% |
| Aug 8, 2022 | 4A | 1 BR · 2 BA · 1,626 sf | $2,395,000 | $1,473/sf | +4.4% |
| Mar 18, 2022 | 3A | 1 BR · 2 BA · 1,626 sf | $2,300,000 | $1,415/sf | +0.0% |
| Jan 15, 2021 | 3A | 1 BR · 2 BA · 1,626 sf | $1,999,999 | $1,230/sf | -20.0% |
| Nov 14, 2019 | PHAB | 5 BR · 4.5 BA · 4,912 sf | $5,450,000 | $1,110/sf | -6.8% |
| Oct 10, 2019 | C1 | 4,370 sf | $4,980,000 | $1,140/sf | off-mkt |
| Sep 14, 2015 | 5C | 1 BR · 1 BA · 949 sf | $1,325,000 | $1,396/sf | -5.0% |
Market read. Most recent trades (2026) cleared a median $1,643/sf (floor-adjusted) across 2 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 3.9% 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 1-00796-7503). 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.
Closed rents at 129 West 20th Street, last 36 months
| Size | Leases | Median / month |
|---|---|---|
| 1 bedroom | 2 | $9,025 |
| 2 bedroom | 2 | $15,000 |
4 closed leases, October 2023 to September 2026. Most recent lease May 2026. Based on few leases. Sizes with fewer than 2 leases are not shown. Compiled by The Roebling Team at Compass from closed leases.
Buying here? Condo closing costs with a mortgage typically run 3 to 6% of the price. See NYC co-op and condo closing costs, line by line.
Keep up with 129 West 20th Street and its market
The Roebling Report, monthly: Manhattan sales data and analysis, including buildings like 129 West 20th Street. Unsubscribe anytime.
We’ll use your email for The Roebling Report and note your interest in this building. See our privacy policy.
What to know if you’re buying
Loft character is the draw. Spacious layouts, high ceilings, large windows, and wide-plank floors define the residences — the loft proportions are the differentiator.
Modern conveniences are built in. In-unit washer/dryers, central air, and walk-in closets came with the conversion — loft space without the compromises of raw loft living.
This is a boutique building. Just 15 residences in a seven-story building — low-density and quiet on a central Chelsea block.
Condo flexibility is real. Pied-à-terre, subletting, foreign buyers, and LLC/trust ownership are permitted under the declaration; closings run on condo timelines.
Mansion tax thresholds apply. At this building's pricing, the $1M and $2M cliffs can be in play. Run pricing through the Mansion Tax Calculator.
Variable board financial policy — confirm at offer stage. Financing percentages and any sublet terms specific to your situation should be confirmed in writing before you commit.
What to know if you’re selling
Lead with the loft. The proportions, ceilings, and light are the story; marketing should foreground the space and the updated conveniences.
Pricing requires apartment-level comps. With 15 residences, floor, exposure, outdoor space, and condition all move the number.
Present the light and the scale. Photography that reads the ceiling heights, the windows, and the wide-plank floors supports price.
Comparable buildings
If you're considering 129 West 20th Street, also evaluate these Chelsea condominiums:
- 121 West 20th Street — nearby Chelsea building
- 130 West 20th Street — nearby Chelsea building
- 121 West 17th Street — nearby Chelsea building
- 154 West 18th Street — nearby Chelsea building
- 130 West 16th Street — nearby Chelsea building
More Chelsea buildings
- 305W16 (127 Eighth Avenue) — 2008 condop by SLCE Architects
- 128 West 26th Street (Novum W26) — 2017 condominium
- Graydon Chelsea (128 West 23rd Street) — 2016 condominium by Kutnicki Bernstein Architects
- 129 West 22nd Street (Top of the Lofts) — 1909 co-op
- 130 West 16th Street — 1927 co-op
- 130 West 17th Street — 1906 condop
The neighborhood
For the full corridor — architecture, 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.
Considering a move at 129 West 20th Street?
Request a private building brief with the relevant comparable sales, current and off-market availability, and an apartment-specific view of value.