SynapDx signs lease for lab space in Lexington, Richards Barry Joyce says

SynapDx Corp., a provider of laboratory diagnostics to doctors who suspect children of developmental disorders, has leased 10,724 square feet of laboratory space at 4 Hartwell Place in Lexington, said a broker involved in the transaction.

The broker is Richards Barry Joyce & Partners LLC, a Boston-based commercial real estate firm. It represented the landlord in the transaction, King Street Properties.

In establishing a new corporate headquarters in Lexington, SynapDx will consolidate two locations in Woburn and Southborough. SynapDx was represented in the transaction by the firm of Cassidy Turley.


In a separate transaction, Richards Barry Joyce said that it represented King Street Properties in a 7,700-square-foot lease by Promedior Inc. That lease is for lab space at 101 Hartwell Avenue in Lexington.

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In December, the Massachusetts Life Sciences Center announced that Promedior planned to relocate to the Boston area from Greater Philadelphia. Promedior is a biotechnology company developing therapeutics for the treatment of fibrosis. T3 Advisors represented Promedior in lease negotiations.

King Street Properties is a private real estate investment management firm focused on serving the real estate needs of science-based companies and institutions in Greater Boston.

In a statement, Eric Smith, senior vice president of Richards Barry Joyce, said, “The upgrades and improvements implemented by King Street across its three-building Lexington portfolio have resulted in a unique park-like setting that appeals to a wide variety of life sciences companies.”

Chris Reidy can be reached at