Building here is signed "Salvin Design 3D Sound, Lighting, Video, & Effects" with website https://www.salvin.biz which lists the address as "308B Route 28
Kingston, NY 12401"

Meanwhile Ulster County GIS (https://ulstercountyny.gov/maps/parcel-viewer/?mapX=-8242992.043507991&mapY=5155062.3659916865&zoom=16&basemap=UCParcels&swis=515400&sbl=04800900010271100000) doesn't list any addresses for this plot. The currently mapped addresses 296 and 304 came from the NY State address import.

Clarify when possible. Also, the sign's pretty old and the website still uses Flash, so this business might not be a going concern.