Headquarters. Baltimore

Branch Offices. RTKL Associates has offices in Washington, D.C.; Los Angeles; Chicago; Dallas; Denver; Miami; London; Madrid; Tokyo; and Shanghai.

Areas of Expertise. RTKL provides design services for HVAC, alternative energy, plumbing, fire protection and life safety, security, power distribution, lighting, and telecom systems. The firm also offers building management and facility consulting services.

Roots. RTKL was founded in 1946.

Key Markets. Commercial, health-care, government, institutional, corporate, data centers, command centers, central plants, and telecom systems.