- Year built
- 1914
- Type
- Condominium
- Units
- 48
- Floors
- 14
- Landmark
- Designated
- Financing
- No building-imposed financing cap (condominium); financing is subject to lender underwriting.
- Subletting
- Leasing permitted (condominium); Board/association review applies. Short-term rentals and AirBnB are not permitted.
- Pied-à-terre
- Permitted.
- Washer / dryer
- Permitted in-unit.
- Pets
- Permitted, subject to Board approval.
- Co-purchasing
- Parents purchasing for children permitted.
- Guarantors
- Permitted.
Compiled by The Roebling Research Desk from building documents and current market data. Board policies can change by amendment — confirm at the offer stage. As of 2026.
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
- $1,911
- Listing discount
- 7.9%
- Recorded sales
- 54
- On record
- 2003–2025
525 Park Avenue — historically known as The Parkside — is one of the oldest Park Avenue luxury apartment houses still in active residential use. The 1914 Schwartz & Gross construction predates the dense 1920s Park Avenue cooperative construction era that produced 720, 740, 770, and 778 Park by more than a decade. The building's Park Avenue / East 61st corner positioning is two blocks south of the Park Avenue / East 63rd–64th cluster and six blocks south of the iconic 740/720/770/778 Park Avenue tier-one peak.
The southern Lenox Hill / Plaza District boundary is structurally important. 525 Park sits at the seam where the Park Avenue residential corridor transitions to the Plaza District luxury hospitality cluster — within walking proximity to the Sherry-Netherland Hotel (1927), The Pierre (1930), The Plaza (1907), and the Plaza Athénée. The cumulative concentration of pre-war architectural distinction within a two-block radius is among the highest anywhere in Manhattan.
525 Park is unusual among Park Avenue's pre-war stock in two structural respects: (1) the 1914 vintage predates the 1920s building boom that produced the trophy peak, and (2) the building was converted to a condominium in 1989 rather than remaining a co-op. The condominium structure produces materially more permissive sublet rules, pied-à-terre allowances, and approval friction than the surrounding Park Avenue co-op stock — a structural feature that meaningfully changes the buyer pool and the building's resale dynamics.
For buyers, 525 Park represents a particular tier of southern Lenox Hill Park Avenue inventory: Schwartz & Gross architectural pedigree, corner positioning, central Plaza District / Gold Coast border location, condominium structure (rare on Park Avenue), and pricing materially more accessible than the 720/740/770/778 Park Avenue trophy peak six blocks north.
Architecture and unit composition
The building's mid-1920s vintage and Park Avenue Gold Coast positioning indicate the standard pre-war luxury cooperative idiom: limestone-clad lower floors, brick body above, classical detailing, formal canopied entrance, and apartment configurations reflecting the era's luxury Park Avenue conventions.
Pre-war signatures expected throughout the building:
- 10–11 foot ceilings in primary rooms
- Formal entry galleries
- Library-living combinations
- Primary suites with substantial closet infrastructure
- Service wings characteristic of 1920s luxury apartment design
- Wood-framed windows (specific configuration to be verified)
Park Avenue-facing apartments (east exposure) look across the Park Avenue median plantings. 60th Street-facing apartments (south exposure) have cross-street exposures looking toward Plaza District inventory.
Building operations
525 Park Avenue operates as a full-service pre-war cooperative with full-time doorman, attended elevator, on-site superintendent, and private storage. Specific operational details — corporation name, managing agent, 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 southern Lenox Hill / Park Avenue Gold Coast norms.
Local Law 97
- 2024–2029 annual penalty
- $13,738/yr
- 2030–2034 annual penalty
- $101,225/yr
- Per unit / month range
- $24 – $176
Recent sales
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 |
|---|---|---|---|---|---|
| Oct 10, 2024 | 14D | 2 BR · 2.5 BA · 2,600 sf | $3,550,000 | $1,365/sf | -11.3% |
| May 3, 2024 | 2C | 3 BR · 3 BA · 2,657 sf | $3,800,000 | $1,430/sf | -23.9% |
| Aug 29, 2023 | 3A | 3 BR · 3 BA · 2,004 sf | $4,050,000 | $2,021/sf | -4.7% |
| Aug 18, 2023 | PHA | 3 BR · 4.5 BA · 4,410 sf · private outdoor | $12,675,000 | $2,874/sf | -15.5% |
| Jul 7, 2022 | 6B | 3 BR · 2 BA · 1,652 sf | $3,625,000 | $2,194/sf | -13.7% |
| Mar 31, 2022 | 11S | 3 BR · 3.5 BA · 2,562 sf | $5,400,000 | $2,108/sf | -9.9% |
| May 31, 2018 | 5C | 2 BR · 1,837 sf | $4,715,000 | $2,567/sf | -5.6% |
| Oct 5, 2017 | 10D | 1 BR · 1 BA · 890 sf | $2,250,000 | $2,528/sf | off-mkt |
Market read. Most recent trades (2024) cleared a median $1,911/sf across 2 sales. Median listing discount 7.9% 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.
Other recent transfers
| Date | Unit | Price |
|---|---|---|
| Oct 9, 2025 | 11B | $2,200,000 |
| Dec 24, 2024 | 2A | $2,000,000 |
| May 23, 2024 | — | $1,450,000 |
| May 6, 2024 | 5BC | $4,625,000 |
| Aug 25, 2023 | D | $1,500,000 |
| Jul 28, 2021 | 12A | $1,995,000 |
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 1-01395-7503) 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
The southern Lenox Hill / Plaza District boundary positioning is structural. Buyers attentive to access to the Plaza District luxury hospitality corridor, Central Park's southeast corner, and Fifth Avenue should weight this geography heavily. The building is among the most centrally positioned pre-war Park Avenue cooperatives.
Pricing is more accessible than the Candela trophy tier peers. 525 Park typically trades at materially more accessible per-square-foot pricing than 720/740/770/778 Park Avenue six blocks north.
Confirm specific policies directly with management. Financing posture, flip tax structure, sublet specifics, pied-à-terre allowance, current capital expenditure pipeline, and architect/year-built attribution should be obtained directly during the contract review process.
Board approval follows tier-one Park Avenue Gold Coast norms. Strong financial profile, professional accomplishment, primary-residence intent are central criteria.
Renovation is constrained by historic district status and pre-war character. The building's position in the Upper East Side Historic District means LPC oversight on any exterior work.
What to know if you’re selling
The Plaza District / Gold Coast boundary is a marketing asset. Listing copy should reference the corner Park Avenue / 61st positioning, proximity to the Sherry-Netherland and The Pierre, and the building's place within the broader pre-war Park Avenue residential corridor.
Pricing requires apartment-level comparable analysis. Floor altitude, exposure, configuration, and renovation history all matter substantially.
Closing timelines are co-op standard. 6–10 weeks from contract signing to closing.
Comparable buildings
If you're considering 525 Park Avenue, also evaluate:
- 515 Park Avenue — Frank Williams / Zeckendorf 2000; immediate neighbor south
- 520 Park Avenue — Stern / Zeckendorf 2018; nearby trophy condo at Park & 60th
- 540 Park Avenue — pre-war Lenox Hill peer at Park & 61st
- 555 Park Avenue — pre-war Lenox Hill peer
- 580 Park Avenue — pre-war Lenox Hill peer
- 720 Park Avenue — Candela 1929; northern trophy peer
- 740 Park Avenue — Candela/Cross & Cross 1930; trophy peer
The Roebling Team at 525 Park Avenue
The Roebling Team at Compass specializes in Central Park West, the Upper East Side, and the broader Park-facing Manhattan market. We publish this building profile because Park Avenue buyers and sellers deserve building-specific intelligence — architecture, board culture, transactional mechanics, and pricing at the apartment level — not generic market commentary.
We hold first-party documentation on 525 Park Avenue, including the original Offering Plan (99MB) in the Roebling Research Library. This allows us to advise buyers and sellers with substantially greater accuracy than building-name-recognition alone permits.
If you're considering a purchase or sale at 525 Park, a 30-minute consultation is the right starting point.