A one-day workshop on home heating costs will be held Feb. 26 at the Loudoun campus of the Northern Virginia Community College. The fee is $12.50. For information, call 323-4551.

Cadillac Fairview, a large Canadian real estate development firm, has opened offices in the 200-acre Washington Industrial Park it is developing at the intersection of George Palmer Highway and Route 50 in the Lanham area.

The Ryland Group, one of the nation's top 10 home builders, has established a central Virginia housing division to serve its operations in Prince William, Stafford and Spotsylvania counties. William McLaughlin is the manager.

Roseann Taff has been named director of sales for the Kensington real estate office of Flaherty, Inc., William Lovett has been named director of sales of Flaherty's expanded Potomac office. Meanwhile, Gary M. Wing, formerly a sales manager, was promoted to vice president of the firm.

"Modern Land Data System - A National Objective" is the subject of a three-day symposium planned for during the annual joint meeting of the American Congress on Surveying and Mapping and the American Society of Photogrammetry. The meeting will be held Feb. 28 to March 5 at the Washington Hilton.

Sen. Robert Packwood (R-Ore.), a member of the Senate Banking, Housing and Urban Affairs Committee, will speak at the Tuesday luncheon of the local Mortgage Bankers Association at the Mayflower.

Realtor Charles E. Krogman, assistant vice president of the Shannon & Luchs real estate firm, has been named membership chairman in this area for the Realtors National Marketing Institute.

Ronald D. Utt, a senior economist in the Office of Management and Budget, has joined the National Association of Real Estate Investment Trusts as a director of research. He is a resident of Arlington.

W. Bruce Steele, associate chief of housing programs for the Metropolitan Washington Council of Governments, will address the Northern Virginia Apartment Association Feb. 28 at a dinner meeting at the Ramada Inn in Arlington.

The Construction Industry National Legislative Conference, sponsored by 23 national associations, will be held March 6 through 9 at the Hyatt Regency here.

DRG Financial Corp. has arranged a $2.7 million permanent mortgage loan for the Coronado Apartments in Sarasota, Fla.

The National Housing Rehabilitation Association and the Institute for Professional and Executive Development, Inc., will hold a seminar on March 4 at the International Inn to explain how "leverage" community development block grant funds can be used to achieve housing and commercial revitalization in urban neighborhoods. For information call 466-8592.

Executives of the Washington office of Julien J. Studley, Inc., were among those attending the firm's planning conference held recently in Spain and France. In Barcelona, Avignon and Nice, Studley officers met with foreign investors and bankers to discuss varied investments in the U.S. Studley leasing offices are located in most major U.S. cities.