1235 Park Avenue
1235 Park Avenue, New York, NY 10128
Upper East Side
BBL 1015247501 · BIN 1073155
- Year built
- 1927
- Type
- Condominium
- Units
- 60
- Floors
- 16
- Pets
- Pets permitted (subject to condominium approval)
- Financing
- Condominium — flexible; up to 80% permitted
- Flip tax
- 1.75%
Every recorded sale at this building, 2003–2025
Price-per-square-foot over time, the line- and floor-premium curves, and every recorded sale.
- Median $/sf
- $1,189
- Listing discount
- 4.4%
- Recorded sales
- 60
- On record
- 2003–2025
1235 Park Avenue is that rare thing on Park Avenue: a prewar condominium. A 1927 neo-Renaissance building designed by Gronenberg & Leuchtag on the southeast corner of 96th Street, it delivers the prewar architecture and Park Avenue address that the corridor is known for — but in an ownership structure that almost every neighboring building lacks. On a boulevard defined by exacting prewar cooperatives, condominium ownership here is the differentiator.
The building's defining feature is prewar bones with condominium flexibility. The overwhelming majority of Park Avenue's prewar apartment houses are cooperatives with strict boards, financing caps, and approval processes. 1235 Park offers the same beamed-ceiling, decorative-fireplace, hardwood-floor prewar interior program — but with condominium financing latitude, permissive subletting, and pied-à-terre ownership. For buyers who want Park Avenue and prewar without the co-op board gauntlet, that combination is genuinely scarce.
Its Carnegie Hill positioning anchors it in one of the Upper East Side's most sought-after residential pockets, with its sister building at 1230 Park Avenue (same architects, opposite corner) completing the intersection's prewar composition.
Architecture and unit composition
1235 Park Avenue is a 16-story prewar condominium of roughly 60 residences, designed by Gronenberg & Leuchtag and completed in 1927. The neo-Renaissance brown-brick facade carries masonry quoins, iron lanterns flanking a canopied entrance, arched third-floor window surrounds, and decorative twin-bird panels at the second story. The lobby has been renovated in marble. Apartments feature beamed ceilings, hardwood floors, and decorative fireplaces — the full prewar interior vocabulary.
The mix runs from two-bedrooms through larger combined and penthouse units, with two penthouses at the top of the building. The building was built as a rental in 1927 and later converted to condominium ownership; the conversion year is cited inconsistently across records and should be confirmed at offer stage.
Building operations
1235 Park operates as a prewar condominium with a full-time doorman, live-in resident manager, elevator, renovated marble lobby, bike room, storage, and laundry in the building. Consistent with a prewar building of its size, it does not offer a gym, garage, or roof deck.
As a condominium, the building offers standard condo flexibility: financing up to 80% permitted, subletting allowed (with a sublet fee equal to two months of common charges per year as of September 2023), and pied-à-terre ownership permitted. A flip tax of 1.75% applies. These flexible terms are characteristic of a condominium and are precisely what distinguish the building from its cooperative neighbors. Pets are permitted subject to condominium approval.
Local Law 97
- 2024–2029 annual penalty
- $0 (under cap)
- 2030–2034 annual penalty
- $0 (under cap)
- Per unit / month range
- —
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.
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.
See the full facade history →Recent sales
1235 Park trades as a prewar Carnegie Hill condominium, with value expressed on a per-square-foot basis. Pricing reflects the scarcity of prewar condominium product on Park Avenue: the combination of 1927 architecture, a corner Park Avenue address, and condominium flexibility supports demand across two-bedroom through combined and penthouse inventory. Recent building activity has run in the range of roughly $1,300 per square foot on average, with larger and higher-floor units commanding premiums. Per-square-foot value is best read within a unit's specific floor, exposure, and renovation level rather than a single building average.
Recent closings at this building, curated by The Roebling Team research desk. Apartment-level facts are independently verified before publishing; sale prices reflect the recorded transfer amount at the NYC Department of Finance.
| Date | Unit | Apartment | Price | PPSF | vs. Ask |
|---|---|---|---|---|---|
| Sep 26, 2025 | 3A | 3 BR · 2 BA · 1,500 sf | $1,385,000 | $923/sf | +2.6% |
| Jul 25, 2025 | 3B | 2 BR · 3 BA · 1,538 sf | $2,250,000 | $1,463/sf | -4.3% |
| Jul 18, 2025 | 6C | 2 BR · 3 BA · 1,728 sf | $2,175,000 | $1,259/sf | -17.0% |
| May 9, 2025 | 1A | 2 BR · 2 BA · 1,462 sf | $1,600,000 | $1,094/sf | +0.0% |
| Jan 13, 2025 | 9B | 3 BR · 2.5 BA · 1,537 sf | $2,350,000 | $1,529/sf | off-mkt |
| Jul 25, 2024 | 9A | 2 BR · 2 BA · 1,462 sf | $1,780,000 | $1,218/sf | -10.8% |
| May 16, 2024 | 1CD | 3 BR · 3 BA · 2,091 sf | $1,925,000 | $921/sf | -1.3% |
| Mar 20, 2024 | 10C | 2 BR · 1,728 sf | $2,400,000 | $1,389/sf | off-mkt |
Market read. Most recent trades (2025) cleared a median $1,189/sf across 5 sales. Median listing discount 4.4% 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 1-01524-7501) 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
Prewar condominium on Park Avenue is genuinely scarce. The same prewar interior program as the corridor's cooperatives, with condominium flexibility that almost no neighboring building offers.
The flexibility is real. Up to 80% financing, permissive subletting (with a fee), and pied-à-terre ownership — latitude the surrounding co-ops do not provide.
Note the flip tax. A 1.75% flip tax applies; model it into resale economics.
Confirm the conversion year and current sublet terms. The condominium conversion date is cited inconsistently; verify it and current house rules at offer stage.
Model the full monthly carry. Common charges plus property taxes plus utilities at a prewar Park Avenue condominium are material.
What to know if you’re selling
Lead with the scarcity. A prewar condominium on Park Avenue is a differentiated story — the flexibility versus co-op neighbors is the headline.
Reach the flexibility buyer. International, pied-à-terre, and financing-sensitive buyers value the condo structure; marketing should reach those pools.
Price against the closest match. Floor, exposure, line, and renovation level drive per-square-foot variation.
Closings are condo-fast. Condominium transactions move on a shorter timeline than the surrounding Park Avenue cooperatives.
Comparable buildings
If you're considering 1235 Park, also evaluate:
- 1150 Park Avenue — nearby Carnegie Hill building
- 1160 Park Avenue — nearby Carnegie Hill building
- 1125 Park Avenue — nearby Carnegie Hill cooperative
- 1327 Madison Avenue — nearby Carnegie Hill building
The neighborhood
For the full corridor — architecture, schools, transit, and pricing across Upper East Side — read The Roebling Team Guide to Upper East Side.
Considering a move at 1235 Park Avenue?
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Own an apartment here? See what it would sell for.
A Private Pricing Opinion — what your apartment at 1235 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.