830 Park Avenue
830 Park Avenue, New York, NY 10075
Lenox Hill, Upper East Side
BBL 1013900037 · BIN 1041702
- Year built
- 1912
- Type
- Cooperative
- Units
- 40
- Floors
- 12
- Landmark
- Designated
- Subletting
- Restrictive (typical of tier-one Lenox Hill pre-war cooperatives)
Every recorded sale at this building, 2003–2026
Bedroom-by-bedroom medians, the full transfer record, and how units trade against ask.
- 4BR+ median
- $6.3M
- Recent range
- $4.6M – $8M
- Listing discount
- 2.6%
- Recorded transfers
- 53
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A Private Pricing Opinion — what your apartment at 830 Park Avenue 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.
830 Park Avenue is among the earliest of the George and Edward Blum brothers' Park Avenue commissions — a 1909 building that pre-dates the absolute peak of the Park Avenue luxury apartment-building tradition by approximately two decades and that represents one of the few authentic pre-WWI Park Avenue luxury cooperatives still operating in original cooperative ownership. The Blum brothers' Park Avenue portfolio — 555, 591, 830, 840, 875, 940, 1075 Park — represents one of the more cohesive single-firm bodies of work in pre-war Park Avenue inventory, and 830 Park is among the earliest mature expressions of the firm's apartment-building vocabulary.
The 1909 vintage produces a particular set of architectural characteristics. The building pre-dates the Candela / Cross & Cross / Carpenter peak (1925–1931) by approximately two decades, with apartment configurations, mechanical systems, and overall building economics reflecting an earlier era of Manhattan luxury apartment design. The ceiling heights, the apartment-layout discipline, and the decorative ornamental vocabulary all reflect a moment in Manhattan apartment history that was still finding its mature form — and that the Blum brothers were among the first firms to develop at the scale and quality that would later define the Park Avenue corridor.
The Blum brothers' decorative facade vocabulary is among the building's most distinctive features. Where the contemporaneous Carrère & Hastings, McKim Mead & White, and other classical-revival firms produced facades that read in dialogue with the broader European classical and Beaux-Arts traditions, the Blum brothers' work integrated decorative detailing — hieroglyphic medallions, Egyptian Revival ornamental elements, Persian and Near Eastern decorative motifs — that distinguished their portfolio from contemporary classical-revival peers. The result is a facade vocabulary that reads as among the more ornamental and decoratively interesting in pre-WWI Park Avenue inventory.
The original cooperative ownership from 1909 produces an institutional culture that has stabilized across more than a century of cooperative occupancy. The 40-apartment scale places 830 Park among the smaller pre-WWI Park Avenue cooperatives — moderate institutional density and limited annual turnover.
The corner positioning at Park Avenue and East 76th Street places 830 Park at the heart of the Lenox Hill / Carnegie Hill transition. Surrounded by tier-one Park Avenue cooperative inventory — 875 Park (Blum brothers 1912) immediately north, 740 Park (Candela / Cross & Cross 1930) several blocks south, 778 Park (Candela 1931) further north, and the dense pre-war cooperative inventory of East 71st through East 78th between Park and Fifth — the building occupies a central position in the modern Park Avenue trophy corridor.
For buyers, 830 Park represents a particular tier of Lenox Hill Park Avenue inventory: pre-WWI architectural pedigree from a distinguished firm with a coherent body of work, 40-apartment scale producing moderate annual turnover, corner Park Avenue / 76th Street positioning, and pricing materially below the Candela apex at 740 Park or 778 Park.
Architecture and unit composition
The 40 apartments span configurations from approximately 2,000 sf 2BRs to substantially larger 4–5 BR configurations across the 12 stories. The building's most architecturally distinctive apartments are the full-floor configurations and the upper-floor residences with longer view envelopes.
Blum brothers' pre-WWI signatures throughout: 10–11 foot ceilings in primary rooms (lower than the 1920s Candela 11–12 foot ceilings but generous by 1909 standards), formal entry galleries, library-living combinations, primary suites with substantial closet infrastructure, service wings characteristic of 1909-era luxury apartment design.
Park Avenue-facing apartments on the western flank look across to the Park Avenue median plantings and the buildings on the avenue's west side. 76th Street-facing apartments to the south have cross-street exposures with stable residential side-street views.
Building operations
830 Park Avenue operates as a full-service pre-war cooperative with full-time doorman, attended elevator, on-site superintendent, and private storage. The 40-apartment scale produces a moderate institutional density characteristic of pre-WWI Park Avenue cooperative inventory.
Specific policy details (financing posture, flip tax structure, sublet policy specifics, pied-à-terre allowance) should be confirmed directly with property management during due diligence. The board posture follows tier-one Lenox Hill pre-war norms — rigorous financial review, strong personal references, primary-residence intent the working assumption.
Local Law 97
- 2024–2029 annual penalty
- $0 (under cap)
- 2030–2034 annual penalty
- $92,682/yr
- Per unit / month range
- $0 – $203
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).
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.
Recent sales
Recent transfers 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 15, 2026 | 10A | 5 BR · 3.5 BA · 3,346 sf | $7,715,000 | $2,306/sf | off-mkt |
| Oct 29, 2025 | 1A | 5 BR · 4.5 BA | $6,250,000 | +0.0% | |
| May 22, 2025 | 9 | 4 BR · 3.5 BA | $8,000,000 | -3.0% | |
| Oct 10, 2024 | MAISA | 4 BR · 3 BA | $4,500,000 | -23.7% | |
| Mar 28, 2024 | 6 | 4 BR · 3.5 BA · 3,700 sf | $4,575,500 | $1,237/sf | -2.1% |
| May 18, 2023 | 2 | 5 BR · 3 BA · 3,750 sf | $5,100,000 | $1,360/sf | -6.4% |
| Jun 21, 2022 | 11 | 3 BR · 3 BA · 3,475 sf | $5,846,250 | $1,682/sf | -22.1% |
| Mar 24, 2022 | 2 | 4 BR · 4.5 BA | $6,500,000 | -18.8% |
Market read. Most recent trades (2026) cleared a median $2,306/sf across 1 sale. Median listing discount 4.0% 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 1-01390-0037) 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 on co-ops is not officially recorded, figures shown are approximate.
At the recent median sale of $7.71M (4 transfers since 2024), a buyer putting 25% down would pay about $188,138 to close, or 2.4% of the price.
- Mansion tax: $173,588
- No mortgage recording tax or title insurance on a co-op purchase
- Attorneys, lender, building fees and filings: $14,550
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
The pre-WWI vintage is structural. The 1909 vintage produces lower ceilings than the 1920s Candela peak, somewhat smaller floor plates on average, and the mechanical systems and apartment configurations of an earlier era. Buyers should evaluate the specific apartment carefully.
The Blum brothers architectural pedigree is real. Buyers attentive to architectural detail find the firm's distinctive decorative facade vocabulary differentiating among pre-war Park Avenue inventory.
Pricing is more accessible than Candela tier-one peers. 830 Park typically trades at materially more accessible per-square-foot pricing than the 1929–1931 Candela Park Avenue tier-one peak.
Confirm specific policies directly with management. Financing posture, flip tax structure, sublet specifics, and pied-à-terre allowance should be obtained directly during the contract review process.
Board approval follows tier-one Park Avenue norms. Strong financial profile, professional accomplishment, primary-residence intent are central criteria.
Renovation is constrained by historic district status and pre-WWI character. The board reviews scope and quality with attention to preservation of original detail.
What to know if you’re selling
The architectural pedigree and the building's age are marketing assets. Listing copy should reference the Blum brothers' authorship, the building's place within the firm's Park Avenue portfolio (555, 591, 840, 875, 940, 1075 Park), and the 1909 vintage as among the earliest pre-WWI Park Avenue luxury cooperatives.
Pricing requires apartment-level comparable analysis. The 40-unit scale produces meaningful variation; floor altitude, exposure, configuration, and renovation history all matter.
Closing timelines are co-op standard. 6–10 weeks from contract signing to closing.
Comparable buildings
If you're considering 830 Park Avenue, also evaluate:
- 875 Park Avenue — Blum brothers 1912; same firm three years later
- 840 Park Avenue — Blum brothers; comparable architectural pedigree
- 740 Park Avenue — Candela / Cross & Cross 1930; the apex of Gold Coast Park Avenue
- 778 Park Avenue — Candela 1931; 18 full-floor apartments
- 720 Park Avenue — Candela / Cross & Cross 1929; trusts permitted
- 730 Park Avenue — Lafayette Goldstone 1929; nearby tier-one Park Avenue peer
More Park Avenue buildings
- 820 Park Avenue — 1926 co-op
- 823 Park Avenue (The Parkville) — 1911 condominium by Pickering & Walker
- 829 Park Avenue — 1909 co-op by Pickering & Walker
- 840 Park Avenue — 1912 co-op by George and Edward Blum
- 850 Park Avenue — 1914 co-op by Rouse & Goldstone
- 860 Park Avenue — 1924 co-op by York & Sawyer
The neighborhood
For the full corridor — architecture, transit, and pricing across Park Avenue — read The Roebling Team Guide to Park Avenue.
The full playbook — what goes in the package, how boards read your financials, the interview, and the timeline — plus sample cover, reference, and personal letters you can adapt.
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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