Richmond Realty Corp’s construction arm, Diamond Builders Inc, was established in 1997 to service development projects of all shapes and sizes for commercial opportunities and residential properties alike. Operating with an owner’s mindset, our project team will use our extensive knowledge of commercial development, construction management, design, budgeting, and scheduling of your project from inception to completion. We supervise and manage the entire process to ensure your project’s goals are executed as efficiently and economically as possible.

We work with our clients to develop a project in a variety of ways: 

  • Turnkey for a fee

  • Sale / Leaseback

  • Lease with Purchase Option

  • Partnership / Joint Venture

Our project experience includes:

  • New Commercial, Industrial and Residential

  • Commercial & Residential Renovations

  • Subdivisions, site planning and site work

  • Tenant Improvements

  • Historic Renovations and Modernizations

  • Estimating & Value Engineering

  • Construction Management

  • Owner Representation / Tenant Representation

  • Construction Accounting

Current Project

Riverhead Commons
700 - 800 Old Country Road Rt 58, Riverhead, NY 11901


Completed Project

Northville Commerce Park
300 - 450 Old Country Road Rt 58, Riverhead, NY 11901