With three members absent, the D.C. City Council voted 7 to 3 last week to close a small section of alley in the square south of the 1700 block of N Street NW to round out the site for a proposed high-rise office building.

The action was preliminary. If it is ratified March 18, a partnership headed by John O. Antonelli will be permitted to erect a 90-foot-high structure on a site that includes the alley segment. Antonelli is the stepson of millionaire parking magnate and developer Dominic F. Antonelli.

Under D.C. law, the land occupied by a closed alley is transferred to the adjacent property owner.

Citizen groups in the Dupont Circle area had fought the alley closing, contending that the council should wait until the D.C. Court of Appeals disposes of their legal challenge to a zoning change that authorized the use of the site for an office building.

Voting to close the alley were Council Chairman Arrington Dixon (D), Charlene Drew Javis (D-Ward 4), Betty Ann Kane (D-At Large), Jerry A. Moore Jr. (R-At Large), Wilhelmina J. Rolark (D-Ward 8), William R. Spaulding (D-Ward 5) and Nadine P. Winter (D-Ward 6).

Voting against the closure were David A. Clarke (D-Ward 1), Hilda Mason (Statehood-At Large) and John A. Wilson (D-Ward 2).

Absent were: Willie J. Hardy (D-Ward 7), John L. Ray (D-At Large) and Polly Shackleton (D-Ward 3).