21 E Second Street

Riverhead, NY 11901

Completely renovated in 2017, this professional office building is located in Riverhead’s historic, walkable district near Main Street. The energy-efficient property features sound-proofed private offices, a flexible layout, and modern building systems, ideal for a wide range of professional, medical, and administrative uses as well as owner-users or investors. The building includes 12 private offices across two floors with multiple waiting areas, a conference room, kitchen facilities, and ADA-compliant restrooms. There is also a free standing office in the rear of the property. Office suites range from approximately 120–190 square feet and are pre-wired for CAT-5 and Wi-Fi with electronic key-lock access throughout. Upgrades include a 200-amp electrical system, new plumbing, solar panels, a high-efficiency boiler, insulated interior walls, and access to a standing insulated walk-up attic of approximately 650 square feet. The first floor is fully handicap accessible, while the second floor provides abundant natural light and a private entrance. Ample parking surrounds the property. The property provides a calm, contemporary professional setting suitable for medical practices, wellness providers, legal or consulting offices, creative studios, or other professional and service-oriented uses seeking a primary location or satellite office.

Listing courtesy of Richmond Realty Corp Ike@RichmondRealtyCorp.com


Based on information submitted to the MLS GRID as of 2026-03-21 04:38 PM EDT. All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information.