Tristar Dairy Centre in Grunthal will have a new home by spring.Owner Clif Bakx says construction of a new 26,000 square foot building west of the feedmill is well underway.  Over the last year the business has expanded into the hog and poultry divisions and Bakx says they need more space.  The extra room will allow them to offer more products like water troughs, fencing, feeders and gates.  Bakx says they currently have a 9,000 square foot building along Main Street.  He expects the expansion will result in the hiring of up to 5 more employees in the next 18 months.