Handling the Rebound Builders learn the lessons of growth by Kathy Price-Robinson If you're not in a construction boom already, you may be soon. Across the country, consumer confidence is running high, interest rates are low, and many areas are experiencing explosive growth. New home sales and starts continue to rise — spectacularly in some areas — and the NAHB predicts 1995's $112 billion remodeling industry will increase to $122 billion this year. Business is particularly brisk on the West Coast. As Arroyo Grande, Calif., building contractor Bruce Robertson said, "If you can't make it now in this business, you might as well get a new career. It'll never get better than this." Most contractors are enjoying