Lantern House at 515 West 18th Street

Heatherwick Studio's design for Lantern House addressed several specific architectural design challenges that the West 18th Street site and the contemporary Chelsea residential register produced. The High Line corridor — running directly past the building at the elevated park's 18th Street segment — provides substantial east-west pedestrian visibility into the building's exterior. The substantial Chelsea residential and gallery context establishes a design-aware buyer demographic that the architectural register needs to serve. And the residential-developer brief required substantial apartment inventory at a scale that supports the building's amenity infrastructure.

The design solution organized the building's massing into two adjacent 22-story tower volumes — an east tower and a west tower, connected through a shared amenity podium at the building's base — rather than into a single substantial tower form. The twin-tower configuration produces substantial cross-ventilation potential between the towers, allows the apartment configurations in each tower to face outward to multiple exposures, and produces a building footprint and massing that calibrates to the Chelsea residential register's preference for breaking the substantial residential program into distinguishable architectural volumes.

The signature architectural element — the lantern bay-window assemblies — was conceived as the principal architectural strategy for the building's exterior. Each lantern is a substantial protruding bay-window form, extending outward from the building's principal facade plane, with the windows surrounded by substantial architectural framing infrastructure. The lanterns are distributed across the building's exterior in a pattern that punctuates each tower's facade at varying floor levels, producing a building exterior that reads — particularly from the High Line and from the surrounding streets — as a composition of these distinct architectural elements rather than as a continuous curtain-wall surface.

Inside the apartments, the lantern forms provide substantial bay-window interior space — additional usable apartment footage at the building's exterior face, with substantial three-sided window exposure and the architectural interior register of the bay-window form. The lanterns vary in scale and configuration across the apartments, with the larger lanterns producing substantial bay-window interior rooms at the most-significantly-positioned apartment configurations.

The interior architectural and finish program — calibrated to the upper register of the contemporary Chelsea luxury residential market — includes substantial ceiling heights, the bay-window interior infrastructure that the lantern forms produce, custom kitchen and bathroom design programs, and the architecturally significant outdoor terrace and amenity configurations that the building's program supports.

Lantern House operates as a full-service condominium with the substantial amenity infrastructure that the building's twin-tower scale and the developer's broader Related Companies residential register support. The 24-hour doorman, concierge, and full-time residential management infrastructure anchor the building's operational standard.

The amenity package is substantial. The building includes a 75-foot lap pool, substantial spa and wellness facilities, a fitness center, residents' lounges and dining facilities, a private dining room, a media room, dedicated outdoor terrace and rooftop infrastructure, and the broader amenity register characteristic of the contemporary supertall residential market applied at the twin-tower boutique-scale of the building. The building's amenity calibration is at the upper register of the contemporary Chelsea inventory.

The condominium operates under standard condominium governance. Application processing for new purchasers follows the standard condominium procedural framework. Building policies on financing, subletting, pied-à-terre use, and other operational matters operate under the condominium framework with the building-specific policies set in the offering plan and the condominium's by-laws; specific policies should be confirmed against current materials during due diligence.

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.

Market read. Most recent trades (2026) cleared a median $2,461/sf across 4 sales. Median listing discount 9.1% 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 1-00690-1229) 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.

The architectural distinction is the structural feature. Lantern House's combination of the Heatherwick Studio design — the firm's first NYC residential commission — the substantial High Line corridor location, and the signature lantern-bay-window architectural register together constitute the building's structural premium.

Apartment-by-apartment variation is substantial. The building's apartment inventory varies meaningfully across the two towers, across the floors, across exposures, and across the specific lantern-bay-window configurations that the apartment includes. Pricing requires apartment-specific comparable analysis at the apartment-line level.

Lantern characteristics are a substantive price driver. Apartments with substantial lantern bay-window configurations command meaningful premiums over apartments without lantern elements. Lantern apartment configurations vary across the building's inventory, with the larger lantern configurations at the higher-floor and corner apartments commanding the building's most-significant lantern premiums.

East tower and west tower offer different exposures. The east tower's apartments face primarily east and south, with substantial exposure toward the High Line and the broader Chelsea district; the west tower's apartments face primarily west and south, with substantial exposure toward the Hudson River and the western waterfront. The exposure preference is a substantive component of the buyer evaluation.

The High Line and Chelsea location is a substantive component of the buyer experience. The building's immediate adjacency to the High Line at the 18th Street segment, and the broader Chelsea gallery, restaurant, and cultural infrastructure within walking distance, produces a daily-life environment substantially different from other Manhattan residential corridors.

Financing and use flexibility is substantively greater than the equivalent uptown cooperative inventory. The condominium form supports financing percentages, holding structures, and use cases that the comparable Park-and-Fifth-Avenue tier-one cooperative inventory does not accommodate. Our Co-op vs Condo guide covers the structural distinction.

Confirm specifics directly with management. Pet policy, alteration-agreement scope, working-capital contribution, the building's current financial profile, and recent operational matters should all be confirmed against current materials during due diligence.

Marketing should foreground the architectural distinction. Lantern House's structural premium derives in substantial part from the Heatherwick Studio architectural significance and the lantern-bay-window register. Apartment-specific marketing should foreground the specific architectural features of the unit — the lantern configuration, the tower placement, the exposure, the floor, and the configuration — that distinguish it within the building's inventory.

Pricing requires apartment-level comparable analysis. Recent comparables on the specific apartment line, tower, exposure, lantern characteristics, and floor should anchor the marketing approach.

The buyer pool is architecturally calibrated. Lantern House's buyer pool concentrates in the design-aware segment of the contemporary Manhattan luxury market. Marketing should reach that pool through targeted channels — the design-aware Manhattan brokerage cooperation pool, the international design-and-cultural buyer networks, the High Line corridor-specific buyer demographic — rather than through general residential listing distribution.

Board approvability is procedural at a condominium. The condominium's review of prospective purchasers is procedural rather than substantive.

Closing timelines are condominium-standard. Plan for 45–60 days from contract through closing under typical financing and due diligence circumstances.

If you're considering Lantern House, also evaluate:

• 520 West 28th Street — Zaha Hadid's only NYC residential, comparable High Line corridor architecturally distinctive boutique condominium
• 565 Broome Soho — Renzo Piano's only NYC residential, comparable downtown architecturally distinctive twin-tower condominium
• 15 Hudson Yards — Diller Scofidio + Renfro's principal NYC residential, comparable West Side architecturally distinctive supertall at substantially larger scale
• The XI (76 Eleventh Avenue) — BIG's twin-tower Chelsea condominium with integrated Faena hotel, the immediate Chelsea peer in architectural register and corridor positioning
• 160 Leroy Street — Herzog & de Meuron's West Village waterfront boutique condominium, comparable downtown design-led buyer demographic
• 56 Leonard Street — Herzog & de Meuron Tribeca supertall, the broader downtown architecturally distinctive new-construction benchmark

The Roebling Team at Compass works the Manhattan trophy-tier new-development inventory as a structural element of our luxury practice, with substantive engagement in the contemporary Chelsea / High Line residential market. We publish this building profile because Lantern House buyers and sellers deserve building-specific intelligence — architectural attribution, lantern-and-apartment-line understanding, transactional context, and the structural-evaluation considerations that distinguish trophy-tier new development.

If you're considering a purchase or sale at Lantern House, a 30-minute consultation is the right starting point. We'll bring the full context this page provides plus the transactional specifics your situation requires — financial structuring, comparable analysis at the apartment line, marketing or offer-stage strategy specifically calibrated to the building's resident-demographic profile, and the pacing strategy that fits your timeline.

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Corey Cohen · The Roebling Team at Compass 646.939.7375 · c.cohen@compass.com