A panel discussion on methods of saving money on the maintenance of grounds by condominium and homeowner associations will be held at 8:30 p.m. Tuesday at the Kensington Library, 4701 Knowles Ave. under the sponsorship of the National Capital Condominium Federation.

John L. Zuccotti, first deputy mayor of New York City, will address the National Housing Conference at noon Tuesday when it meets for lunch at the International Inn.

"Natural Gas: Crisis and Conservation" will be the topic when the area Property Management Association meets Thursday evening at the Lanham Ramada Inn. Joseph L. Milazzo of the Washington Gas Light Co. will be the speaker.

A 107,000-square-foot warehouse near Springfield, Va., used primarily by the J.C. Penney Co., has been sold for $1.95 million to the Equitable Life Assurance Society by owner Walt Robbins.

The D.C. Metropolitan Subcontractors Association will hold its annual dinner-dance Feb. 26 at the Washington Hilton. The association will present its "Subby" awards to an outstanding general contractor, an owner-builder, an architect, an engineer, a job superintendent, a member sub-contractor and a public official.

Thirty-four experts from nine states and the District will be instructors for a one-week course on all aspects of single-family home building to be given, beginning Feb. 28, by a subsidiary of the National Housing Partnership. For information, call 857-5700.

C.J. Cross & Associates recently arranged $8 million in long-term financing for the University Towers apartment buildings in Silver Spring. University Towers Joint Venture, with Nathan Brisker and Anthony Campitelli as principals, is the owner of the 10-year-old property, that is fully leased. The project's "wrap-around" mortgage provides additional financing, while retaining the original mortgage, to produce a smaller average interest rate than might be available under current rates.

Bruce E. Stauffer has been elected president of the area chapter of the Associated Builders & Contractors, Inc. Other offices are James E. Mills Jr., Edward Becraft, John E. Tefft III and Richard Hottel.

Joseph E. Pignataro has been elected for a second term as head of the District of Columbia Builders Association. Other officers are Lawrence P. Goodwin, Theodore R. Hagans Jr., Lisle T. Lipscomb and Frank Calcara.

The written examination for real estate broker and agent in the District will be held Feb. 22 at the Quality Inn near the Capitol.

Francis X. Pfau has joined the Mortgage Bankers Association of America as senior director of income property, a new post. He has experience in commercial lending and mortgage banking.

The National Capital District of Century 21, which now has 62 franchise real estate affiliates in this area, will hold a sales rally and workshop at the Bethesda Holiday Inn, beginning at 9 a.m. on Feb. 19. Real estate consultant J.C. Lang will be the speaker.

C. Duke Brannock, a past president of the Washington Board of Realtors, and Chester H. Vosper, a past president of the Northern Virginia Board of Realtors, have been installed as directors of the National Association of Realtors.

Carter V. Boehm, the broker of Century 21-Townside Properties in Alexandria has reported that the firm now is offering prospective purchasers a color videotape look at homes it has available on the market.