Economist Elliot Eisenberg will be the keynote speaker at the builders and developers luncheon sponsored by Peoples Co., Diligent Development and Acquire magazine. The event is 11:30 a.m. March 1 at the Sheraton West Des Moines Hotel, 1800 50th St. Eisenberg was a senior economist with the National Association of Home Builders. For more information, contact Cannon Clark at 473-7454 or