Mark your calendars for April 10th & 11th this year – if you are in the market for a new home, the Tri City Association of Realtors is sponsoring an Open House weekend in conjunction with the Realtors National Open House Weekend. The homes will be open somewhere in the timeframe of 11 a.m until 4 pm on both days. Last year’s event was a success with over 170 homes holding Open House events. Homes will be throughout Kennewick, Pasco, Richland and West Richland.