36 —September 2025 — Owners, Developers & Managers — M id A tlantic Real Estate Journal
www.marej.com O wners , D evelopers & M anagers Commercial to residential conversion Crystal “crowns” historic Manhattan, NY restoration
UEENS, NY — Na- tional manufacturer Crystal Window & Door Systems played a trans- formative role in the restora- tion and vertical expansion of a historic New York City building. Located at 650 First Ave. on Manhattan’s east side, the brick edifice built in 1894 now features a new four-story addition atop the original seven floors. Crystal’s Series W50i Window Wall System was used to completely encase the four new floors. In addi - tion, Crystal supplied over 200 heavy-commercial replace- ment windows for the historic structure’s rehabilitation as the property was converted from a commercial building to a multifamily residential one. The 650 First Ave. vertical expansion portion of the proj- ect called for over 11,000 s/f of glass façade. The window wall used for the building was Crystal’s new unitized Series W50i system. This state-of- the-art aluminum frame win- dow wall system features a 5” deep European style frame with a polyamide insulating strut thermal break. The sys- tem is structurally rated at Q
650 First Ave. on Manhattan’s east side
AW-PG55. The renovation of the his- toric original building at 650 First Ave. also called for the installation of 238 high-end Crystal windows. The windows selected were in-swing case- ment and fixed picture styles of the architecturally rated aluminum Crystal Series 9200. Ismael Leyva Architects , of New York, NY, provided the
design services for the base building renovation and the glass enclosed 4-story rooftop vertical expansion. The de- veloper is First and River, LLC , of Lake Success, NY, part of the Lalezarian Prop- erties organization. Window wall installation and window replacements were handled by Façade Improvement of Brooklyn, NY. MAREJ
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