The Collin County tax assessor-collector's office in Plano will relocate Feb. 11 to 900 E. Park Blvd., Ste. 100. The county office is one of three in Collin County, with offices in neighboring McKinney and Frisco. The new location is down the street from its current location at 920 E. Park Blvd. 972-881-3014.