The Fairfax County Board of Supervisors this week sent a strong message to county residents who might be thinking of pooling their land to sell for high-density residential or commercial development.

A group of residents in the 338-acre Fairfax Farms neighborhood in the Fair Oaks area had asked for permission to sell to a developer who wanted to build high-density housing. But instead of approving the proposal, supervisors adopted policies that will make it even harder for residents to sell out in the future.

As one unidentified resident said, "That effort sure backfired on those people."

The board approved a proposal advanced by the county planning staff that strengthens language in the county's land-use plan, which calls for stabilizing the Fairfax Farms area as a neighborhood of detached homes on large lots.

The supervisors refused to allow those who had filed the request for redevelopment to withdraw the application, even though about 70 percent of the community's residents had signed petitions seeking withdrawal.

Jack Rust, chairman of a citizens task force that has been evaluating proposed changes in the rapidly growing 5,200-acre area now known as Fairfax Center, said Fairfax Farms "is a stable neighborhood" that should be preserved.

Gretchen Davis, a resident of the community for 15 years, said, "Land-pooling has reared its ugly head all over the county. It has torn this community apart."

The supervisors, however, did approve the redevelopment of the Pendercrest area southwest of Fair Oaks Mall according to the Fairfax Center land-use plan that calls for creating "an urban village" in the area.

They also agreed to the redevelopment of a large tract south of Rte. 50 and west of West Ox Road.

The Fairfax County Board of Supervisors has scheduled public hearings on proposed changes on the county's comprehensive land-use plan for June 23.

The items involve both land-use and transportation policies in almost every part of the county.

High on the list of items to be aired is the proposal that would prohibit any additional commercial development along Leesburg Pike, west of the Dulles Airport Access Road interchange.

"This will keep the Leesburg Pike free of office development west of the toll road ," said Planning Commission Chairman George Lilly.

Fairfax County policy calls for residential development in that area, but recent attempts to rezone some land for commercial use prompted county planning staff members and supervisors to draft a proposal they said is designed to strengthen long-standing policy.

The proposal has strong support from area residents.

IN THE BUSINESS . . . Three Riverdale apartment complexes with a total of 273 units -- Rivergrove, Terrace Hill and Westside Park -- have been sold at public auction for $4.88 million to Arnold Berlin, an agent for a Maryland partnership to be formed on behalf of trustees Charles M. Tatelbaum and Steven F. Fruin. . . . Northern Virginia Builders Association is honoring Stephen G. Yeonas with a black-tie dinner June 20 to note his induction into the National Housing Hall of Fame. . . . Centennial Development Corp. has announced plans for Gateway One, the flagship building at Centennial Gateway Center, an office, retail and hotel complex near Fair Oaks Mall in Fairfax County. . . . Donohoe Construction Co. has started construction on a $5.5 million Residence Inn at the intersection of Herndon Parkway and Elden Street in Herndon. . . . Public real estate securities sales dropped 36.4 percent in the first three months of the year compared with the last quarter of 1985, down from $2.2 billion to $1.4 billion, according to Roulac's Strategic Real Estate.