Mark Plotkin, a political consultant to the Democratic National Committee, officially announced his candidacy yesterday for the City Council seat being vacated this year by Polly Shackleton (D-Ward 3), saying he wants to see more control of development in the ward and more review of mayoral appointments.

"The ward wants somebody not tied to Mayor Marion Barry," Plotkin said yesterday.

Plotkin, 38, ran unsuccessfully in 1982 against Shackleton, a staunch Barry ally and three-term council member who was on the first council elected under home rule in 1974.

He said yesterday that the City Council should be more vigilant in confirming mayoral appointments to boards and commissions, particularly those involving zoning and historical districts.

He said he would like to see Cleveland Park designated a historical district, for example, to prevent the demolition of a small row of shops on Connecticut Avenue just north of Ordway Street.

One Republican and three other Democrats have indicated they plan to run for the seat in the affluent ward in Northwest.

Other Democratic candidates for the seat include Ruth Dixon, publisher of a local government newsletter, who ran second to Shackleton in 1982 in the Democratic primary with 35 percent of the vote, compared with Plotkin's 18 percent; Mary Draper Janney, a former leader of Wider Opportunities for Women and Planned Parenthood of Metropolitan Washington, and Jim Nathanson, a teacher and community activist who has received Shackleton's endorsement.

Gloria R. Corn, an advisory neighborhood commissioner and resident of the Forest Hills area, is the only Republican who has indicated she intends to run.

Plotkin, who last year chaired ANC 3B in the Glover Park area, has lobbied against telephone rate increases and for local laws requiring locks on apartment building front doors and mailboxes. He also said that getting a special paramedic unit for the ward, which has the highest concentration of elderly in D.C., is one of his priorities.

Ward 3 residents often turn to the Bethesda-Chevy Chase ambulance service as more reliable than the District's, Plotkin said.