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CORE

American real estate brokerage firm

CORE, sometimes referred to as the CORE Group Marketing LLC, is a New York-based, full-service real estate brokerage firm.2 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

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CORE, sometimes referred to as the CORE Group Marketing LLC, is a New York-based, full-service real estate brokerage firm.2

The story

CORE was founded in 2005 by Jack Cayre (the son of real estate developer and music and video executive Joseph Cayre) and South African immigrant Shaun Osher. The name is an acronym for Cayre Osher Real Estate. It has offices in Chelsea, Flatiron, Union Square, Madison Avenue and Brooklyn.

In March 2010 The Real Deal announced CORE’s participation in the HGTV reality show, Selling New York.

In 2014 Related Companies acquired a stake in CORE.

From Wikipedia’s article on CORE (real estate), shared under CC BY-SA 4.0.3

Sources

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