175–177 East 77th Street (177 East 77th Street Condominium)

The building rises 11 stories plus a penthouse level in sandy-beige brick, with Boak & Paris's streamlined vocabulary concentrated at the entrance: a one-story limestone surround with incised geometric ornament, flush lanterns, and a canopy, beneath a small limestone plaque at the second floor. The recessed central bays carry the firm's signature 45-degree chamfered corner windows — a device the architects had used for the same developers at 160 East 89th Street — and the facade is otherwise unornamented, which is the Art Moderne point. The original steel casement windows have since been replaced.

Inside, the 57 condominium units descend from the original 52-apartment layout of three- and four-room suites — today predominantly one- and two-bedroom homes with a number of combinations — and the terrace-per-apartment program means private outdoor space appears throughout the building rather than only on premium lines. Corner exposures, balconies, and renovation quality drive the spread between lines; the 2004 conversion updated building systems and windows, and unit interiors range from conversion-era finishes to full gut renovations.

A boutique, service-led condominium: doorman and concierge coverage, roof deck, and storage per brokerage records, with no large amenity program — buyers comparing against newer Upper East Side condos should weigh location, outdoor space, and condo mechanics against amenity-floor breadth. The Lexington Avenue local at 77th Street is half a block west; Lenox Hill Hospital is a block away, which buyers should evaluate in person for siren tolerance on the Lexington side of the block. The condominium's governing documents and financials are obtained per-transaction; The Roebling Team reviews them with clients during diligence.

Compare this boutique condominium with surrounding postwar cooperatives and new Third Avenue condominiums using transaction evidence and adjustments for ownership requirements, services, area and condition. Evaluate terraces and corner exposures individually; combination units make up the building’s larger inventory. Unit-level transaction history is maintained in The Roebling Research Library and shared with clients during diligence.

• Max Rosen — the Romanian-born violinist who debuted with the New York Philharmonic in 1918 lived and taught in the building until his death in 1956, per historical records

The condo structure is the asset. Pre-1945 construction with condominium transfer mechanics is genuinely scarce in Lenox Hill. Confirm trust, LLC, pied-à-terre and co-purchase structures against the condominium documents with your attorney.

Price the outdoor space line by line. The terrace-per-apartment heritage means outdoor space is common here, but size, exposure, and the difference between a true terrace and a Juliet-scale balcony vary significantly. East-facing terraces above the two-story Third Avenue neighbor carry open light; verify the exposure's permanence posture with your attorney rather than assuming it.

Address both house numbers in your search. Listings and records appear under both 175 and 177 East 77th Street. Search both addresses and the parcel identifiers, then deduplicate results; either address alone may omit records.

Verify the policy stack directly. Pet rules, leasing limits, transfer fees, and alteration requirements are thinly documented publicly. We obtain the current condominium documents from the managing agent during diligence.

Mansion tax planning applies at the building's price points. Run the Mansion Tax Calculator at the intended offer before negotiating, against both the $1 million and $2 million thresholds.

Market the architecture and the mechanics together. Boak & Paris, 1941, bolted-steel innovation covered by The New York Times, a terrace on the line, and condominium transfer mechanics in a co-op neighborhood — that is a specific, verifiable story.

Position against both alternatives. Compare relevant Lenox Hill cooperatives and newer Third Avenue condominiums by actual price, purchase requirements, amenities and carrying costs. Present this apartment’s architecture and outdoor space without assuming it occupies a fixed middle price tier.

Condition transparency wins in a 57-unit building. Same-line comparables are thin; the spread between conversion-era and renovated interiors is wide and known to active buyers. Price to condition honestly — run the Renovation Cost Calculator against your asking strategy.

If you're considering 175–177 East 77th Street, also evaluate:

• 176 East 77th Street (Lenox Manor) — the full-service postwar co-op directly across the street; compare its services, cooperative purchase requirements and actual sale prices
• 170 East 77th Street (The Diamond House) — Boak & Paris's 1940 sister building for the same developers, also now a condominium; the closest like-for-like comp in the city
• 255 East 77th Street — a new-development condominium comparison on the corridor; verify current prices
• 188 East 78th Street (The Empire) — the same sponsors' circa-2000 tower around the corner; the larger-scale alternative
• 205 East 77th Street (Dover House) — postwar co-op neighbor east of Third
• 170 East 78th Street (The Morgan Studios) — 1927 boutique pre-war co-op one block north; the character alternative with co-op mechanics
• 180 East 79th Street — Schwartz & Gross pre-war co-op; the scale and pedigree step-up
• 200 East 74th Street — white-brick postwar co-op three blocks south; the value-tier full-service alternative