Professional Office Building for Lease 421 N Sam Rayburn Freeway | Sherman, TX 75090 Approximately 5,340 SF two-story professional office building located directly on US-75 (Sam Rayburn Freeway) with excellent visibility, easy access, and strong traffic counts. The property is well suited for medical, legal, financial, engineering, insurance, or general office users. The building features a functional layout with private offices, open work areas, conference space, break room(s), and restrooms across two levels. Flexible configuration allows for a single-tenant user or potential multi-office use. The site offers ample on-site parking, prominent frontage, and signage opportunities along the freeway. Strategically positioned near downtown Sherman with convenient access to surrounding retail, restaurants, and major thoroughfares. This location provides both professional presence and commuter convenience, making it ideal for owner-users or growing businesses seeking high visibility.