The "Firm" 4521 State Highway 121 4,000 SF Office Building Plano, TX 75024 $2,790,000 ($697.50/SF)

The “Firm” represents a modern evolution of the professional headquarters — a privately owned executive environment intentionally designed for family offices, law firms, financial advisory groups, CPA firms, and high-end professional service operators seeking permanence, control, and long-term brand presence.
Spanning approximately 4,000 square feet across two thoughtfully designed levels, The Firm blends executive functionality with hospitality-inspired design to create a headquarters environment centered around leadership, client experience, and operational efficiency. Rather than occupying anonymous leased space within a multi-tenant office tower, owners establish a standalone headquarters identity designed to reflect the professionalism and caliber of their business.
The first level is designed around client interaction, collaboration, and daily operations — featuring a reception environment, conference and meeting rooms, open workspace, gourmet kitchen and coffee bar, and integrated garage access. Above, a more private executive environment emerges with additional private offices, leadership suites, strategic workspace, and a second-floor balcony designed for focused work and elevated client hospitality.
Created for founder-led and partner-driven organizations, The Firm emphasizes visibility, permanence, confidentiality, and long-term ownership within one of North Texas’ fastest-growing business corridors.
Positioned within Mustang Square along Highway 121 in the Plano–Frisco corridor, The Firm sits within immediate proximity to Legacy West, The Star District, Grandscape, Stonebriar, and major regional corporate campuses — placing businesses at the center of North Texas enterprise growth.
At The Foundry, ownership is not simply about office space — it’s about creating a headquarters worthy of the clients, reputation, and legacy your firm is building.