For the second time within a year, the D.C. Zoning Commission agreed this week to reconsider a request from the owners of the Fourways Restaurant near Dupont Circle to rezone its property to permit the construction of a seven-story condominium.

Attorneys for Walter Sommer, general partner of Fourways of Washington Ltd., which owns the property, filed for the reconsideration of the application after the commission voted last month to deny its rezoning request.

The commission voted 3 to 1 this week to reopen the zoning case despite strong opposition from several neighborhood citizens groups that fear that the condominium will lead to a series of commercial development rezonings in a neighborhood where they would like to limit the amount of traffic.

The commission's decision now goes to the National Capital Planning Commission, which must review it within the next 30 days. It will make its recommendation to approve or deny the application to D.C. zoning officials, who may make the final decision on the Fourways case at their Feb. 8 meeting, according to Cecil Tucker, the commission's secretary.

Fourways officials have argued that they need the rezoning to prevent the company from going bankrupt. For the past 15 months, Dupont Circle area residents and Fourways officials have had two public hearings and filed numerous motions and letters debating the project.

"We're very disappointed," said Vernon Palmer, staff director of the Advisory Neighborhood Commission 2B. "We feel the commission did themselves and the public a disservice by taking this action and not sticking to its original decision."

Larry Tunison, president of Fourways of Washington Ltd., said if final approval is granted, the firm hopes to begin construction of the new building within six months of the decision.

IN THE BUSINESS ... NVRyan said it expects to earn in excess of $6 million from the sale of its 50 percent interest in the Potomac Lakes development in Loudoun County to Kettler & Scott Inc., its joint venture partner in the residential and commercial development. NVRyan has retained the right to buy about 1,200 residential lots at Potomac Lakes to build houses ... The Association of Foreign Investors in U.S. Real Estate, a new trade group, is being formed, with Ambassador H. William Middendorf as secretary-general for North America, Annaeus M. Brouwer, a Dutch real estate investor here, as secretary-general for Europe, and Chikara Higashi, a member of the Japanese Diet, or parliament, as secretary-general for Asia and Oceania ... Wills-Chalmers Inc. has started construction on 2100 Reston Ave. in Reston, a six-story, 153,000-square-foot office building, and expects to finish it by late this year ... Tetra Partnerships is planning The Pond, a 48,200-square-foot office condominium bordered on three sides by a pond in Reston ... The McKnew Group, a local real estate financial services corporation, and Newmarket Capital Corp., a residential and commercial mortgage banking service organization, have joined to form Newmarket McKnew Builders Mortgage Services to provide construction, commercial and permanent financing for builders and developers ... Anthony M. Natelli, general partner of Potomac Investment Associates, has been elected as the 1988 president of the Suburban Maryland Building Industry Association. The association, in conjunction with the Washington Metropolitan Sales and Marketing Council, is presenting a five-session seminar on "Introduction to Building" starting Feb. 12, while the association itself is presenting a two-day training program Feb. 9 and 16 for construction supervisors and foremen. Call 572-5900 for more information ... Roberts & Lloyd Inc. Realtors of Vienna has formed the Roberts & Lloyd Insurance Agency.

PERSONNEL FILE ... The Federal Home Loan Mortgage Corp. has named Charles E. Goetze as vice president of multifamily operations and David Wayne Wright Jr. vice president of operations support ... Dennis Turner, formerly of Coldwell Banker Commercial Real Estate Services, is joining the Charles E. Smith Cos. as vice president and manager of commercial leasing at a new Smith leasing office to be opened in the Tysons Corner area.