635 Park Avenue (The Adelaide)
635 Park Avenue, New York, NY 10065
BBL 1014000069 · BIN 1042448
- Year built
- 1912
- Type
- Cooperative
- Units
- 16
- Floors
- 13
- Landmark status
- Not an individual landmark; in the Upper East Side Historic District
- NYC Landmarks Preservation Commission records, updated February 2026
- Flip tax
- 1.5% of the purchase price, paid by the seller
- Doorman
- Full-time doorman
Every recorded sale at this building, 2004–2025
Bedroom-by-bedroom medians, the full transfer record, and how units trade against ask.
- 4BR+ median
- $8.3M
- Recent range
- $6.8M – $8.3M
- Listing discount
- 15.1%
- Recorded transfers
- 17
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A Private Pricing Opinion — what your apartment at The Adelaide 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.
635 Park Avenue is one of the architecturally most consequential J.E.R. Carpenter Park Avenue commissions and the building whose floor plans Paul Goldberger ranked among his "Top 10 Great City Apartment Buildings" in a 1977 New York Times review. The building was developed by Spencer Fullerton Weaver — the same developer behind 630 and 640 Park — during Carpenter's most productive Park Avenue years, when he was establishing the apartment-house archetype that would define the avenue's Golden Age. Carpenter's Park Avenue body of work is among the most concentrated single-architect runs in Manhattan: 550, 580, 625, 630, 640, 655, 812, 950, 960, and 1050 Park, plus a near-equal Fifth Avenue catalog.
The current 635 Park Avenue replaced an earlier Henry Janeway Hardenbergh-designed apartment house of the same name — "The Adelaide" — a pedigree the building has chosen to retain. Hardenbergh, the architect of The Dakota and the original Plaza Hotel, established the architectural identity that the Carpenter-designed building has continued under the same name.
The exterior is restrained: lunette panels above the second-floor windows, a broad bandcourse above the third floor, a balustrade course at the 12th, and a richly arched cornice. The building's contemporary cultural reputation rests on what's inside.
Architecture and unit composition
The 16 apartments are organized one per floor for most of the building's height. Each typical apartment is built around a 13.5-foot-diameter circular foyer that visually quotes the rotunda of a Beaux-Arts townhouse. From that foyer the entertaining spaces unfold: a 30-foot living room, a 27-foot dining room, an 18-foot salon. A side corridor leads to four master bedrooms; kitchen, pantry, and four staff rooms are zoned behind. Andrew Alpern, in Apartments for the Affluent, called this division of public, private, and service zones the closest a Park Avenue floor-through ever came to a true townhouse plan. Paul Goldberger's 1980 Times column described 635 Park's floor plan and the contemporaneous 580 Park floor plan as "two of the best floor plans in Manhattan."
The architecturally consequential floor plan is the structural feature buyers should understand at the start of any prospective transaction.
Building operations
635 Park operates as a small-scale full-service cooperative with full-time doorman, elevator operators (the building retains attended elevator service), live-in superintendent, and private storage. The building does not carry an on-site garage, fitness center, or roof deck — the operational baseline reflects the service-traditional pre-war Park Avenue tradition rather than contemporary amenity expectations.
The cooperative culture is institutional and consistent with the trophy pre-war Park Avenue tradition. Specific board policies on financing, flip tax, pet rules, pied-à-terre allowance, and sublet duration should be verified directly during due diligence.
Notable residents (publicly documented)
Harriet Barnes Pratt, widow of Harold Irving Pratt and a nationally known horticulturist and philanthropist (d. 1969); Walter Hoving, longtime chairman of Tiffany & Co.; and Conrad Black, the former Hollinger International publishing magnate (1994 purchase, documented through subsequent civil litigation reporting).
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.
- Terms
- Equal to 1.5% of the Purchase Price
- Rate
- 1.5% of the purchase price
- Paid by
- Seller
Source: building management's published schedule, as of September 2026
Purchase
5 items
Fees and charges
| Item | Paid by | When | Amount | Refundable |
|---|---|---|---|---|
| Application Processing Fee | Paid by Buyer | When With the application | Amount $600 | Refundable Non-refundable |
| Messenger Fees | Paid by Buyer | When With the application | Amount $65 | Refundable Non-refundable |
| Recognition Agreement Review FeeConditionalConditions: If Applicable | Paid by Buyer | When At closing | Amount $300 (if applicable) | Refundable Non-refundable |
| Managing Agent Transfer FeeConditional | Paid by Seller | When At closing | Amount $900 if Seller is an Individual, $1000 if Seller is an Estate | Refundable Non-refundable |
| New York State Stamp TaxPer share | Paid by Seller | When At closing | Amount $0.05 per share | Refundable Non-refundable |
Refinance
2 items
Fees and charges
| Item | Paid by | When | Amount | Refundable |
|---|---|---|---|---|
| Application Processing Fee | Paid by Shareholder | When With the application | Amount $500 | Refundable Non-refundable |
| Messenger Fees | Paid by Shareholder | When With the application | Amount $35 | Refundable Non-refundable |
Ownership transfer
4 items
Fees and charges
| Item | Paid by | When | Amount | Refundable |
|---|---|---|---|---|
| Application Processing Fee | Paid by Buyer | When With the application | Amount $600 | Refundable Non-refundable |
| Background Check FeePer applicant | Paid by Buyer | When With the application | Amount $100 per applicant/occupant | Refundable Non-refundable |
| Credit Report FeePer applicantRequired | Paid by Buyer | When With the application | Amount $75 per applicant/occupant | Refundable Non-refundable |
| Messenger Fee | Paid by Buyer | When With the application | Amount $65 | Refundable Non-refundable |
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.
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Building staffing and amenities
- Doorman
- Full-time doormanSource: The Roebling Team's building profile
- Live-in superintendent
- YesSource: The Roebling Team's building profile
- Elevator
- YesSource: NYC Department of City Planning records (PLUTO)
- Amenities noted
- StorageSource: 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.
Local Law 97
- 2024–2029 annual penalty
- $0 (under cap)
- 2030–2034 annual penalty
- $34,558/yr
- Per unit / month range
- $0 – $180
- Modeled exposure split equally across 16 units (the residential count on the city's lot record). Not an assessed amount; co-op shareholders are typically charged by share allocation.
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 2025–30. 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, 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 |
|---|---|---|---|---|---|
| Feb 27, 2025 | 9 | 4 BR · 4 BA | $8,250,000 | -13.2% | |
| Oct 21, 2024 | 8 | 5 BR · 4.5 BA | $6,750,000 | -6.9% | |
| Aug 3, 2022 | 2 | 3 BR · 4.5 BA | $9,700,000 | -11.8% | |
| Jul 12, 2021 | — | 5 BR · 4 BA | $11,300,000 | -16.3% | |
| Jul 12, 2021 | 11 | 5 BR · 4 BA | $11,100,000 | -17.7% | |
| Nov 14, 2018 | 6 | 5 BR · 5.5 BA | $8,300,000 | -17.0% | |
| Sep 27, 2018 | 4 | 4 BR · 6.5 BA · 4,550 sf | $11,000,000 | $2,418/sf | -26.7% |
| Jun 2, 2004 | MAIS | 2 BR | $2,350,000 | +0.0% |
Market read. $/sf is measured on the latest sales with reliable square footage (2018): a median $2,418/sf (recorded) across 1 sale. The building has traded as recently as 2025. Median listing discount 14.7% from the last ask — a recurring negotiation gap worth pricing into any offer or listing strategy.
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 1-01400-0069). 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 on co-ops is not officially recorded, figures shown are approximate.
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What to know if you’re buying
The Carpenter architectural pedigree is real and substantial. Among the architect's most consequential Park Avenue commissions; the Goldberger floor-plan recognition is documented in the historical record.
The one-apartment-per-floor configuration is structural. Among Carpenter's smallest-scale Park Avenue commissions; the 16-residence intimate scale produces a corresponding institutional cooperative culture.
The floor plan is the architectural-historical feature. The 13.5-foot circular foyer, the 30-foot living room, the 27-foot dining room, the 18-foot salon — the floor plan is the building's structural identity feature, not the façade.
Inventory turnover is among the slowest on the corridor. The 16-unit scale produces minimal annual transaction volume; recent comparable analysis depends on small samples.
Verify operational specifics during due diligence. Specific board approval framework, financing structure, flip tax, sublet duration limits, current capital project pipeline, and the LL11 façade cycle on the 1912 vintage should be reviewed.
Closing timelines are cooperative-standard. Plan for 6–10 weeks from contract through board approval to closing.
What to know if you’re selling
Marketing should emphasize the Carpenter floor-plan pedigree and the Goldberger recognition. Both are real architectural-history credentials.
The "Top 10 Great City Apartment Buildings" institutional credential is real. Paul Goldberger's New York Times recognition supports premium pricing positioning.
Pricing benefits from broker familiarity with the building's narrow buyer pool. The 16-unit scale means recent comparable closings carry meaningful weight in the building's reference pricing.
Closing timelines are cooperative-standard.
Comparable buildings
If you're considering The Adelaide, also evaluate:
- 625 Park Avenue — nearby Park Avenue peer
- 620 Park Avenue (The Palacio) — Carpenter 1924; same-architect Park Avenue peer
- 640 Park Avenue — Carpenter 1914; same-architect / same-developer (Weaver) Park Avenue peer
- 740 Park Avenue — Candela / Cross & Cross 1929–30; trophy pre-war cooperative
- 820 Fifth Avenue — pre-war Fifth Avenue trophy peer
More Park Avenue buildings
- 620 Park Avenue (The Palacio) — 1924 co-op by J.E.R. Carpenter
- 625 Park Avenue — 1929 co-op by J.E.R. Carpenter
- 630 Park Avenue — 1916 co-op by J.E.R. Carpenter
- 640 Park Avenue — 1913 co-op by J.E.R. Carpenter
- 650 Park Avenue — 1963 co-op
- 655 Park Avenue — 1924 co-op by J.E.R. Carpenter
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.
Considering a move at The Adelaide?
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646.939.7375 · c.cohen@compass.com