In its second major real estate deal in Northern Virginia in recent weeks, the Linpro Co., a Philadelphia-based developer with a local office in Germantown, has purchased 25 acres of commercially zoned property at the I-66 and Rte. 123 interchange in Fairfax City for $5 million.

R. William Hard, Linpro's operating partner, said the company plans to invest some $50 million in a four-building office park on the site, which is sandwiched between I-66 and a Holiday Inn. The land wraps around Fairfax Shopping Center, beginning at the end of Eaton Place. The site also has a 600-foot frontage along Rte. 50, Hard said.

The land is currently undeveloped but is already zoned for commercial use under a C-2 category in Fairfax City.

The land was purchased from Sam Eaton, who over the last 20 years has sold off major portions of the Rte. 50-Rte. 123 area. "He originally sold the ground where the Holiday Inn now sits. The land has been in Sam Eaton's family since before 1900," Hard said.

Last week, Linpro officials confirmed their pending purchase of the 2.7-acre site where the Providence Baptist Church sits, at the intersection of International Drive and the Leesburg Pike, almost inside the Tysons Corner Shopping Center. That deal is a complicated sale, full of contingencies involving Linpro's aiding the church in securing a new location. The church is currently trying to move to a site at the intersection of the Leesburg Pike, Brook Road and Lewinsville Road.

Linpro is planning to call its Fairfax City development Commonwealth Conference Center. The complex will include four office buildings with a total square footage of 450,000, with approximately 112,000 square feet in each building, Hard said.

The sale from Eaton to Linpro was handled by Smithy Braedon, a real estate company with offices in Virginia, Maryland and the District.

The latest purchase of Fairfax County land by Linpro apparently indicates a major move into the Fairfax market for the Linpro operation.

In June, Linpro purchased 24 acres along Sully Road (Rte. 28) in western Fairfax, near Washington Dulles International Airport and the site of the Governor's Center for Innovative Technology.