40 East 61st Street

The elevation is Art Deco in the restrained commercial idiom of the late 1920s: a fluted two-story limestone base, a canopied and inset two-story entrance with bronze doors, and beige brick above organized into piers and spandrels. The 1980s enlargement reproduced the pier rhythm but changed the spandrel color and the band count, so the composition reads as two related buildings joined rather than as one. Air conditioning is through-wall and discreet. Balconies appear on the eastern side of the setback addition.

Residential floors run from the fifth up. Unit designations follow an A/B/C convention by floor — 5A, 5B, 5C through 17A and 17B — with two penthouse residences at the top. Thirty-six residential unit lots exist in the recorded schedule; the Department of Finance carries every one at building class R4. Several combinations have occurred: ACRIS shows adjoining lots conveyed together in single instruments, which is normal in a building of this vintage and unit size and means the number of physical apartments today may be slightly below the recorded lot count.

The floor count is genuinely unsettled in the public record — PLUTO says 20, the Department of Finance roll says 19, and published architectural records say 21. The likeliest explanation is that the enlargement's mechanical and penthouse levels are counted differently by different agencies. Nothing turns on it for a purchaser, but it is a good illustration of why a single city data source should not be treated as authoritative on this building.

Service here is traditional and narrow: a full-time doorman, a live-in superintendent, elevators, and a common laundry. There is no gym, no roof deck and no garage. Washers and dryers are permitted within apartments per management-sourced records, which matters in a building whose original floor plates were not laid out with laundry in mind.

The operating question specific to 40 East 61st Street is the residential–commercial split. With roughly 20,000 square feet of commercial area against 50,000 residential, the allocation of common expenses between the two sections is a material line in the budget, and so is the commercial section's share of capital work on the façade, the roof, the elevators and the mechanical plant. A purchaser should ask the managing agent directly how common charges are apportioned between residential and commercial units, whether the commercial section is current, and what governance rights the commercial unit owner holds under the by-laws. On a converted mixed-use building of this vintage those answers are not boilerplate.

Two further items belong on any diligence list. First, no offering plan for this building was located in either document library at the time of writing, which means the by-laws, house rules, and the residential–commercial allocation formula must come from the managing agent rather than from a document already on file. Second, an amended declaration was recorded in ACRIS in March 2026. Its contents were not reviewed for this profile; a buyer should obtain and read it, because amendments to a declaration can change unit boundaries, common-interest percentages, or the rights of the commercial unit.

Capital posture on a 1927 structure enlarged in the early 1980s deserves specific attention: the Local Law 11 façade cycle on a building with two different wall assemblies is not a routine expense, and the elevator and mechanical systems installed at conversion are now more than forty years old. Request the last two audited financial statements, the reserve balance, the assessment history, and the current façade filing status.

Pets are permitted, per management-sourced and listing records; confirm the specific rules in the current house rules. Leasing by owners is permitted with conditions; pied-à-terre use and LLC and trust purchases are not documented — confirm them in the declaration, bylaws and house rules. Purchases run through the condominium's application and right-of-first-refusal process rather than a board approval. In-unit washers and dryers are permitted, and a common laundry is maintained. Financing terms, any minimum down-payment requirement, and any resale capital contribution are not documented in public records — obtain them from the managing agent at offer stage. There is no tax abatement, and none has ever attached to this building's unit lots.

Recent sales

Recent closings 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 (2025) cleared a median $2,136/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 5.8% 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 1-01375-7501; each condominium apartment is its own tax lot). 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 from recorded condo declarations and offering plans.

Read the residential–commercial allocation before anything else. Roughly a third of the building is commercial. Ask the managing agent how common charges and capital costs are split, and what the commercial unit owner can vote on.

Get the March 2026 amended declaration. A recorded amendment can change unit boundaries or common-interest percentages. It is in ACRIS; read it.

There is no offering plan on file in either library. By-laws, house rules and the policy stack must come from the managing agent. Budget time for that.

Underwrite the façade. Two wall assemblies of different ages, a 1927 base and an early-1980s enlargement, on a building past its fortieth year since conversion. Ask for the current Local Law 11 filing status and the reserve balance behind it.

Do not confuse this building with 44 East 67th Street. Different block, different building, different history — a 1941 Candela apartment house converted in 1988. The two are unrelated.

Lead with the terrace, if the residence has one. Outdoor space in Lenox Hill at this price is the scarcest thing the building offers.

Sell the condominium form. Against the prewar cooperatives on the surrounding blocks, there is no co-op board admission — purchases run through the condominium's application and right-of-first-refusal process — and it should be said plainly.

Have the history ready and get it right. The 1927 Professional Building, the LeRoy Sanitarium, the 1983 conversion and enlargement. It is a genuinely interesting provenance, and the widely circulated "converted 1963" figure is incorrect — correcting it in your materials is worth doing.

Anticipate the commercial-base question. Every serious buyer will ask about the lower floors. Have the allocation answer, not a shrug.

• The Carlton House (21 East 61st Street) — the same block frontage, a conversion of a former hotel, at the top of the market
• 167 East 61st Street — the same street, east of Third Avenue; a different price tier at similar unit scale
• 43 East 62nd Street — comparable Lenox Hill side-street ownership one block north
• 118 East 60th Street — a block south; boutique-scale Lenox Hill inventory
• 163 East 60th Street — comparable size and service level in the same submarket
• 200 East 62nd Street — post-war full-service condominium; the amenity-forward alternative
• 205 East 63rd Street — similar unit sizing and buyer pool in Lenox Hill
• 116 East 63rd Street — nearby side-street building for buyers weighing conversion against post-war construction
• 44 East 67th Street — a Candela apartment house converted to condominium in 1988; the closest structural analogue in the district for a prewar-to-condominium conversion, and a different building entirely