1040 Park Avenue

The building was constructed in 1925 from plans by Delano and Aldrich, with J. H. Taylor Construction Co. as builder. The original plan called for 3 apartments on each typical floor — substantial pre-war full-floor-style configurations consistent with the era's luxury Park Avenue idiom. Over the subsequent decades, several of these original units were subdivided; the 1960 cooperative conversion plan describes approximately 100 apartments, and city tax records now list 88. The mix spans a range from approximately 2-room studios and small one-bedroom configurations to 8-room+ multi-bath and penthouse layouts.

Architectural signatures throughout:

• Three-story limestone base with classical surround and white marble entrance trim
• Buff face brick body above with limestone or cast-stone ornamental treatment at the cornice line
• Ornamental iron balcony on each facade at the 14th floor — a distinctive Delano and Aldrich detail
• 15th-floor penthouse level with three glass-and-steel solariums plus terraced apartments (15D, 15E, 15F, 15G, 15H configurations)
• Double-hung wood "6-over-6" windows throughout
• Red promenade tile main roof, brick parapets with cast-stone copings
• 10,000-gallon wooden water tower in dedicated brick housing (integral with fire-line standpipe system)

The 15th-floor penthouse apartments are the building's most architecturally distinctive — with terraces or solariums, and views opening across Carnegie Hill toward the East 86th Street corridor and beyond. The 14th-floor balcony tier provides similar architectural distinction at a slightly lower altitude.

The original Delano and Aldrich plan placed the most substantial apartments on the upper floors and the building's primary frontages (Park Avenue east exposure and East 86th Street south exposure). Park Avenue-facing apartments look east across the Park Avenue median plantings to the buildings on the avenue's east side. East 86th Street-facing apartments look south across the street to the buildings on the south side of 86th.

1040 Park Avenue operates as a full-service pre-war cooperative under the corporate entity Park-86 Apt. Corp. The 1960 staffing baseline was 18 employees (superintendent, handyman, 3 doormen, 4 passenger elevator operators, 2 service elevator operators, 3 porters, 4 relief operators); modern operations have evolved with the conversion to automatic passenger elevators (the west passenger elevator was automated as early as 1958, prior to the cooperative conversion).

Current amenities include: full-time doorman, attended elevators, on-site superintendent, private storage cubicles (43 in basement; tenants typically share), shared coin-operated laundry, and eight private laundry cubicles.

Operational policy framework (per current House Rules):

• Strict access protocols: visitors must be announced; keys left with doorman require sealed envelope and signed authorization (the rule explicitly notes the building does not accept emailed authorizations — only signed/faxed)
• Passenger elevators reserved for residents/guests only — no deliveries, no trades, no bicycles or scooters
• Service elevator operations 8:00 AM – 11:00 PM
• 75% floor-area carpeting required (typical pre-war Park Avenue standard, designed to reduce inter-floor noise transmission)
• Music practice capped at 2 hours per day; no vocal or instrumental instruction permitted at any time
• Pets permitted on elevators only on leash or carried
• Moves restricted to weekdays 9:00 AM – 5:00 PM with 2-day advance notice and superintendent oversight
• Terrace planters: maximum 150 lbs, no gas or charcoal grills, plant height capped at 48"

Board governance and financials: Policy details at the Park-86 Apt. Corp. — current financing and liquidity requirements, flip tax structure, sublet policy specifics, pied-à-terre allowance — should be confirmed directly with property management during due diligence.

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.

Market read. Most recent trades (2026 to date) cleared a median $954/sf (floor-adjusted) across 1 sale. Floor-adjusted means each sale is restated to a constant mix of floors, so the figure can differ from the plain median of the sales listed above. Median listing discount 3.5% from the last ask — a recurring negotiation gap worth pricing into any offer or listing strategy.

Sales sourced from NYC Department of Finance recorded transfers (BBL 1-01498-0033). 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.

Architectural pedigree is part of the case. Delano & Aldrich designed the building; LPC credits the firm with two apartment houses in the Park Avenue Historic District, 925 and 1040 Park Avenue. Assess an apartment's price against recent comparable sales, adjusting for size, floor, exposure, condition, maintenance and building policies; the design credit is not itself evidence of a pricing gap.

Original unit configurations vary substantially. The 1925 plan called for 3 apartments per typical floor, several of which have been subdivided. Apartment-level due diligence on layout, ceiling heights, exposure, and renovation history is essential.

The 86th Street corner produces a specific neighborhood character. Heavy cross-town traffic on 86th Street is a factor; the corner positioning provides good light access but means proximity to the 86th Street commercial activity (banks, drugstores, restaurants, the 86th Street Lexington Avenue subway station one avenue east).

Confirm specific policies directly with management. Financing posture, flip tax structure, sublet specifics, pied-à-terre allowance, and current board priorities should be obtained directly during the contract review process. The Alteration Agreement framework — which was updated as recently as 2015 — should be reviewed if renovation is contemplated.

Confirm the board's requirements. Confirm the building's current financing, liquidity, ownership and occupancy requirements from the proprietary lease and application instructions; documented terms include financing up to 50% of the purchase price and subletting permitted with conditions.

Renovation is constrained by historic district status and pre-war character. The building is in the Park Avenue Historic District, which means LPC oversight on any exterior work. Interior renovations require Alteration Agreement and board review.

The Delano and Aldrich credential and 1925 vintage are the primary marketing assets. Listing copy should reference the architect by name (rare-on-Park-Avenue credentialing), the 1925 build, the early-1960 cooperative conversion under Goelet sponsorship, and the building's position as the southern Carnegie Hill anchor at the seam with Lenox Hill.

Pricing requires apartment-level comparable analysis. The building's size (88 residential units in city tax records) produces meaningful variation; floor altitude, exposure, original-vs-subdivided configuration, and renovation history all matter substantially.

The 15th-floor penthouse inventory commands a distinct pricing tier. The terraces, solariums, and views differentiate these apartments materially from typical mid-floor configurations.

Closing timelines are co-op standard. 6–10 weeks from contract signing to closing, with the standard Park Avenue board package and reference requirements.

If you're considering 1040 Park Avenue, also evaluate:

• 1050 Park Avenue — immediate neighbor north; pre-war Carnegie Hill peer
• 1060 Park Avenue — Carnegie Hill peer
• 1075 Park Avenue — Blum brothers 1929; Carnegie Hill peer
• 1133 Park Avenue — Schwartz & Gross 1928; Carnegie Hill peer
• 1185 Park Avenue — Schwartz & Gross 1929; Carnegie Hill courtyard plan, distinctive Park Avenue trophy
• 1000 Park Avenue — Emery Roth 1916; nearby pre-WWI peer at the Park / 84th seam
• 825 Park Avenue — pre-war Lenox Hill peer
• 1 Sutton Place South — 1927 Rosario Candela with Cross & Cross cooperative; a pre-war peer in a different geography