The D.C. Zoning Commission yesterday denied a two-year-old request by the owners of McLean Gardens that would have turned the apartment complex into a diplomatic enclave including chanceries.

CBI Fairmac Corp., owner of McLean Gardens, had asked the zoning commission in late 1975 to create a new international district zoning category and apply it to the McLean Gardens area, where the corporation wanted to develop a $150 million diplomatic enclave with apartments, shops, boutiques and embassies and chanceries.

But yesterday, at the recommendation of municipal planning director Ben Gilbert, zoning commissioners voted unanimously to deny those requests without hearings.

Gilbert said he made his recommendation because the new plan for chanceries and embassies that the National Capital Planning Commission has adopted does not include McLean Gardens as a suitable site for international development.

"And under the home rule act, NCPC has the assignment to plan for international development, rather than the District," Gilbert said.

Last week, McLean Gardens tenants were notified they must vacate their apartments by Sept. 1 because CBI Fairmac plans to discontinue the Gardens as a rental project. Fairmac's management director said the company has not decided what will happen to the buildings once they are vacant.

Gilbert said that though the NCPC plan eliminated the Gardens as a site for chanceries, there still had been "some citizen concern" over the chancery proposal because the zoning commission tabled further action on Fairmac's application in 1976. With yesterday's vote, Gilbert said, "The file should be closed."