177 Ninth Avenue
177 Ninth Avenue, New York, NY 10011
Chelsea
BBL 1007187501 · BIN 1088184
- Year built
- 2010
- Type
- Condominium
Every recorded sale at this building, 2008–2026
Price-per-square-foot over time, the line- and floor-premium curves, and every recorded sale.
- Median $/sf
- $2,431
- Listing discount
- 10.0%
- Recorded sales
- 105
- On record
- 2008–2026
Own an apartment here? See what it would sell for.
A Private Pricing Opinion — what your apartment at The Chelsea Enclave 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.
The Chelsea Enclave is one of the most distinctive new buildings in Chelsea precisely because it does not try to stand apart — it is woven into one of the neighborhood's great historic settings. Completed in 2010 by The Brodsky Organization and designed by Polshek Partnership Architects (now Ennead) with interiors by Alan Wanzenberg, the seven-story, 53-residence condominium occupies a corner of the General Theological Seminary block, replacing a 1960s structure with a red-brick building that matches the Seminary's Gothic Revival vocabulary and sits comfortably within the Chelsea Historic District.
The building's defining amenity is its setting. Residents have exclusive access to the Seminary's block-long, European-style garden — a private, gated green space of extraordinary rarity in Manhattan, the kind of amenity that cannot be replicated and that anchors the building's identity. A new condominium with the financing latitude and ownership flexibility a condo provides, dropped onto a historic seminary garden in the heart of Chelsea, is a genuinely singular proposition.
For buyers, the appeal is the combination of contextual architecture, a serene and private setting, and full-service condominium living, in one of Chelsea's most desirable pockets — steps from the High Line, the gallery district, and the Hudson River parks.
Architecture and unit composition
The design is an exercise in restraint and context. Polshek's red-brick façade was conceived to harmonize with the Seminary's 19th-century Gothic Revival buildings, with proportions, materials, and detailing chosen to belong on the block rather than announce a new arrival. Wanzenberg's interiors carry that sensibility inside — warm, finely detailed, and tailored to the building's quiet character.
The 53 residences range from one-bedroom homes to expansive penthouses with private terraces, many oriented toward the garden and the leafy historic streetscape. The boutique scale and the contextual design give the building an intimacy uncommon in new construction, and the homes are prized for their light, their outlook onto the garden, and the level of finish. The penthouses, with their private outdoor space and elevated views over the Seminary grounds, are the building's crown.
Building operations
The Chelsea Enclave runs as a full-service condominium with an amenity package scaled well beyond its size. Residents have a 24-hour concierge, a fitness center, a private roof lounge with a sundeck, grill, and children's play space, an on-site garage, a bicycle room, private storage, and a live-in superintendent — and, above all, exclusive access to the Seminary's block-long garden, the amenity that defines the building.
As a condominium, ownership is flexible. Purchases clear through a right-of-first-refusal rather than a co-op board, financing is unconstrained by co-op-style caps, and pied-à-terre, investment, trust, and entity purchases are customary. For buyers who want a serene, design-forward home with condo freedom in the Chelsea Historic District, the building's structure is a direct fit.
Local Law 97
- 2024–2029 annual penalty
- $0 (under cap)
- 2030–2034 annual penalty
- $70,155/yr
- Per unit / month range
- $0 – $108
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 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.
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.
421-a Tax Abatement
- Last year of benefit
- FY2021
- Fully taxed from
- FY2022 (2021–22)
- Program
- 421-a (10-year)
The 421-a benefit has run its term. Taxes on these units have stepped up toward the full assessed amount, so the low carrying cost this building once carried is no longer available. Price from the current tax bill, and treat any comparable sale made while the abatement was still running as a different asset.
Source: NYC Dept. of Finance property-tax exemption records (421-a), refreshed 2026-09-06 · The Roebling Research Library. Confirm the exact step-up schedule on the building’s DOF tax bill. Years shown are NYC tax years, which start July 1 — FY2022 runs July 1, 2021 to June 30, 2022. The benefit last appears on the 2021 assessment roll, which is what dates the end of the term.
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 8, 2026 | 5D | 2 BR · 2.5 BA · 1,732 sf | $4,100,000 | $2,367/sf | -2.4% |
| Apr 2, 2026 | 5H | 2 BR · 2.5 BA · 1,804 sf | $4,500,000 | $2,494/sf | +0.0% |
| Dec 4, 2025 | 4G | 2 BR · 2.5 BA · 1,564 sf | $3,250,000 | $2,078/sf | -7.0% |
| Sep 8, 2025 | PHF | 4 BR · 3 BA · 2,129 sf | $5,600,000 | $2,630/sf | -6.6% |
| Jun 5, 2025 | 2E | 1 BR · 1.5 BA · 882 sf | $1,480,000 | $1,678/sf | off-mkt |
| Jul 8, 2024 | 5E | 1 BR · 1.5 BA · 882 sf | $1,579,000 | $1,790/sf | -1.0% |
| Dec 15, 2023 | 4J | 3 BR · 2,259 sf | $5,700,000 | $2,523/sf | off-mkt |
| Dec 12, 2023 | 2A | 4 BR · 4.5 BA · 3,176 sf | $6,800,000 | $2,141/sf | -9.3% |
Market read. Most recent trades (2026) cleared a median $2,431/sf across 2 sales. Median listing discount 10.0% 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 1-00718-7501) 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
Buy the setting. The reason to own here is the private garden and the contextual architecture — a combination that is irreplaceable and that gives the building a stability of value uncommon in new construction. Garden-facing homes capture the full benefit; confirm the line's orientation and outlook.
Value the boutique full-service profile. Fifty-three homes with a concierge, garage, roof lounge, and the Seminary garden is a rare balance of intimacy and service. The penthouses, with private terraces over the historic grounds, are the building's signature homes.
Lean on the condominium structure. Financing is flexible, the approval path is light, and pied-à-terre and investment purchases are permitted — and the location, steps from the High Line, the galleries, and the waterfront parks, is among Chelsea's most coveted.
What to know if you’re selling
Lead with the garden. The exclusive access to the Seminary's block-long garden is the building's irreplaceable differentiator and the centerpiece of any marketing — there is nothing else like it in the neighborhood. Pair it with the contextual architecture and the boutique full-service profile.
Benchmark to boutique Chelsea condominiums. A resale belongs against the neighborhood's design-driven, amenity-rich new inventory, where buyers pay for setting, finish, and outdoor space. Garden-facing homes and the penthouses occupy the top of that comparison set.
Present to the calm. Buyers respond to the serenity of the garden setting and the quality of the Wanzenberg interiors; a well-prepared home that showcases the light, the garden outlook, and the finish will stand out, particularly given how rarely homes here come to market.
Comparable buildings
If you're considering The Chelsea Enclave, these nearby Chelsea condominiums are worth evaluating:
- 212 West 18th Street — Chelsea condominium
- 224 West 18th Street — the boutique Campiello Collection condominium
- 245 Tenth Avenue — West Chelsea condominium near the High Line
- 100 Eleventh Avenue — Ateliers Jean Nouvel with Beyer Blinder Belle's 2010 Manhattan condominium
- 520 West 19th Street — Annabelle Selldorf / Selldorf Architects's 2018 Manhattan condominium
- 450 West 17th Street — Handel Architects (with Clodagh)'s 2008 Manhattan condominium
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.
Considering a move at The Chelsea Enclave?
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