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    • Home
    • About Us
      • Our Approach
      • Leadership
    • Services
    • Office Locations
      • Manhattan
      • Long Island
      • Miami
    • Portfolio
Keystone Builders Group
  • Home
  • About Us
    • Our Approach
    • Leadership
  • Services
  • Office Locations
    • Manhattan
    • Long Island
    • Miami
  • Portfolio

The Strathmore @ 400 East 84th St

Keystone Builders successfully completed the comprehensive conversion of an approximately 184,000-square-foot high-rise residential building from rental apartments to luxury condominiums. The project encompassed the transformation of 154 residential units, elevating each residence to meet the expectations of today’s discerning condominium buyers.

In addition to the unit renovations, the project included a complete modernization of all residential corridors, creating a refined and cohesive experience throughout the building. Common areas were reimagined with a fully renovated lobby, a state-of-the-art fitness center, and a thoughtfully designed resident amenity space, enhancing both functionality and lifestyle offerings.

The project required careful coordination within an occupied urban high-rise environment, maintaining quality, schedule, and operational continuity while delivering a sophisticated residential product that reflects modern luxury living.


Project Highlights


  • 184,000 SF high-rise residential conversion
  • 154 apartment units converted to luxury condominiums
  • Complete corridor renovations
  • New luxury lobby and common areas
  • State-of-the-art fitness center
  • Resident amenity space improvements
  • Complex phased construction within an existing high-rise structure

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