Wombat X is a reconfigurable service robot for different building environments. It is a versatile system for multiple applications in logistics, spatial mapping, fumigation, and landscaping. The three key elements include the base platform with drive mechanisms and electric components, stackable units containing functional equipment, and a frame to mount end effectors and sensors, including depth cameras, 2D LiDAR, 3D LiDAR scanners, etc. The robot has several wheel and track options for indoor and outdoor environments. Wombat X is lightweight and easy to control, either remotely or wired.