The Kettler Brothers homebuilding firm reported that it sold 67 houses in 11 developments around the area in January, for a total of $6.1 million. Ron Delisi, sales manager, said that the dollar total was a 36 percent increase over a year earlier. The average Kettler Brothers sale in January was for $90,705, he said. Twenty-two of the sales were made in the McRory community in Montgomery Village, where below-market prices are available to moderate-income buyers who obtain special state and county financing, he added.

A free seminar on "How You Can Sell Your Own Home" will be held at 10 a.m. March 1 at the Holiday Inn in Bethesda. It will be conducted by Suburban Home Advisors, a discount broker.

Long & Foster Realtors reported that the average price of the 9,953 houses it handled last year was $81,279, compared with $70,934 in 1978.

Because house resales nationally declined 14 percent in the final two months of 1979, total U.S. resales for the year were 3.7 million units, down 4 percent from the 3.9 million total of 1978, the National Association of Realtors reported.

The Suburban Maryland Home Builders Association recently gave its energy conservation awards to five building firms that put extra energy-savings materials and techniques into their homes. The awards went to C.I./Mitchell & Best Co., Columbia Homes, John C. Walker Co., Built-Rite Builders and Stanley Martin Communities.

Shannon & Luchs reported that its commercial leasing division handled a record $59 million in leases signed last year.

Universal Title Co., heded by Lester Poretsky and Mitchell C. Rasberry, has been opened at 9470 Annapolis Rd., Lanham.

Columnist Neal R. Peirce will speak at the Tuesday luncheon of the National Housing Conference at the National Housing Center. He will discuss the increasing scarcity of sites for federally assisted housing projects.

The D.C. Builders Association will hear Rep. Charles Wilson (D-Texas) at a dinner meeting Feb. 26 at the Touchdown Club.

The Ivor B. Clark Co. announced that it arranged $19.7 million in permanent financing for the new Georgetown Plaza complex at Pennsylvania Avenue and 29th Street NW. The complex includes the Four Seasons Hotel.

Albert W. Glass, former deputy director of the loan guaranty service of the Veterans Administration, has been promoted to director. He succeeds Robert C. Coon, who retired recently after a 37-year federal career.

Michael Woodward of Woodbridge has been elected president of the area council of 30 Red Carpet franchise real estate offices. The council is part of the nation-wide Red Carpet franchise network based in Walnut Creek, Calif.

Stuart and Maury Inc. Realtors has joined the Nationwide Transfer Relocation Organization Inc., based in Baton Rouge, La.

John J. Heyn, who heads a home inspection service operating in the Baltimore-Washington area, has been re-elected president of the American Society of Home Inspectors.

David H. Conway, a sales manager for Better Homes Realty Inc. for six years, has been named to the executive board of the firm.

Realtor W. Donald Calomiris will receive the distinguished alumni award today from American University. An adjunct professor of real estate there, Calomiris is a member of the AU board of trustees and head of its finance committee. The college recently named the conference room in the Kogod College of Business Administration in honor of Calomiris.