Breaking Ground

Chilston Court

Chilston Court is an ultra-luxury condominium development in downtown Greenwich, Connecticut, set across two buildings at 275 and 290 Mason Street, steps from Greenwich Avenue and the Metro-North station.

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Details

275 Mason Street, Greenwich. 78 residences. Completing Late 2028.

The story so far

Developed by Caspi Development and designed by Robert A.M. Stern Architects with interiors by the London studio Bryan O'Sullivan Studio, the project delivers 78 residences ranging from two-bedroom homes to expansive penthouses. Drawing its cues from luxury hospitality rather than the suburban estate, Chilston Court offers roughly 10,000 square feet of shared amenities including a lap pool, wellness facilities, a residents' lounge, a twenty-person private dining room, a speakeasy, a garden courtyard and concierge service, bringing lock-and-leave sophistication to one of the wealthiest enclaves in the United States.

Expected opening Late 2028
Broke ground Sep 2026 est.
greenwichfreepress.com
Nearly half sold Aug 2026

Caspi Development told Greenwich Time that Chilston Court is nearing 50 percent sold within weeks of launch, with more than a dozen contracts at $10 million or higher; completion still targeted for the end of 2028.

greenwichtime.com
Site cleared Jul 25, 2026

The former Greenwich Honda dealership on Mason Street was demolished to make way for Chilston Court, with demolition continuing into August.

oftmw.com
Sales launched Jul 2026

Sales launched at Chilston Court: Caspi Development opened sales on the 78-residence scheme across two buildings at 275 and 290 Mason Street, priced from roughly $4.5 million to more than $10 million, on the site of the former Greenwich Honda dealership, with completion planned for 2028.

oftmw.com
Announced 2026 est.

Only just unveiled July 2026 in active pre-construction sales (conceptual renderings, disclaimers), completion 2028. Two buildings at 275 and 290 Mason Street, downtown Greenwich CT (Connecticut, not London).

oftmw.com
Milestones are dated to when they actually happened and linked to their source. This record fills in over time as TMW tracks the project.
TMW IntelligenceVerified Oct 28, 2026
AnnouncedBreaking GroundConstructionOpening SoonNow Open

The outlook for Chilston Court

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Companies and contacts

Every firm on Chilston Court, the office nearest it, and the people who work on it.

Common questions

Frequently asked

Where is Chilston Court located?

Chilston Court is located in Greenwich.

When will Chilston Court be completed?

Chilston Court is breaking ground, with completion targeted in Late 2028.

Who is developing Chilston Court?

Caspi Development is the developer behind Chilston Court.

Who designed Chilston Court?

Chilston Court was designed by Robert A.M. Stern Architects, with interiors by Bryan O'Sullivan Studio.

How big is Chilston Court?

Chilston Court features 78 residences.