Empire Electric USA is a general electrical contractor based in Kennewick that also serves Vancouver (phone (360) 448-1385 there). Alongside panel, circuit and HVAC electrical work, it offers smart home services for homeowners.
Its smart home page lists smart lighting installation (brightness, schedules and zones from a phone or voice assistant), smart thermostat installation, whole-home automation connecting lighting, thermostats and devices, and Loxone systems that combine lighting, security, heating and cooling and energy management. It says it installs systems compatible with Google Home, Amazon Alexa, Apple HomeKit and Loxone, and checks wiring, switch locations and electrical capacity first. The company states it is the only company in Washington offering Loxone systems; that is its own claim.
As a general (01) electrical contractor it can do the 120-volt switch and dimmer wiring itself.