Members of the Suburban Maryland Home Builders Association will participate in a free energy conservation workshop Wednesday, beginning at 8:30 a.m., in St. Charles, Md. Co-sponsors are the Department of Housing and Urban Development and the Department of Energy.

Alan J. Blocher, Vice President for mortgage programs and services of the Federal Home Loan Mortgage Corp., will speak at the Tuesday luncheon of the Mortgage Bankers Association at the Mayflower hotel.

Attorney Alan Siegal will discuss employe relations Thursday evening when the Property Management Association in this area meets at the Old Town Holiday Inn in Alexandria.

The Potomac chapter of the American Right-of-Way Association will meet Tuesday at Valle's restaurant in Rockville for an all-day seminar.

Craftsmen from the old village of Smithville, N.J., will be at the Watergate of Alexandria town house community on Sunday to demonstrate colonial crafts from 1 to 4 p.m. The address is 1045 N. Pitt St.

Jack S. Russell, a member of the board of directors of Suburban Maryland Fair Housing and an employe of the U.S. Commission on Civil Rights, will be the speaker when SMFH meets at 8 p.m. May 25 at the Cedar Lane Unitarian Church in Bethesda.

Alvin Hirshen, director of the office of community investment of the Federal Home Loan Bank Board, will discuss reinvestment in urban housing at the Tuesday lunch of the National Housing Conference at the International Inn. He will discuss reinvestment in urban housing.