A proposal to build a $113 million hotel, office and retail complex at the New Carrollton Metro station was unveiled yesterday by Prince George's County Executive Parris N. Glendening and Metro officials.

The plan, recommended by an architectural consulting firm, calls for construction on 26.5 acres that would leased from the Washington Metropolitan Area Transit Authority. Most of the property, which is southeast of the Metro station, is now being used as a parking lot for Metro. A new Amtrak station is under contruction on the northwest side of the railroad tracks.

Metro officials said they expect to begin seeking a developer in late 1984 or early 1985. Glendening said a 24-story office building and a 350-room, 15-story circular hotel might be ready by 1987. The first phase is projected to cost $70 million, according to Lee Skillman, senior development specialist for Metro.

Metro officials said the project will be similar to developments around the Bethesda and Rosslyn Metro stations.

The preliminary plan, designed by Perkins and Will, a Washington-based firm, also includes two smaller office buildings and three multilevel parking decks, with parking for about 3,600 vehicles. The current Metro parking lots there have 1,500 spaces.

Glendening, who has placed a major emphasis on luring new business to the county, said the proposal "will complement office and commercial development already in the Metro East area."

This plan is the result of efforts by Metro, Maryland National Capital Park and Planning and Prince George's County to stimulate development on the site surrounding the New Carrollton Metro site.

In addition to providing services to Amtrak, Metrorail and Metrobus riders, Glendening said the project, which would include 300,000 square feet of office space and 45,000 square feet for retail space, could provide an estimated 2,000 new jobs and about $1.6 million annually in property tax revenues. Metro has not yet determined how much it will charge to lease the land.

Before the plan can proceed, it must be presented to the county council for approval of zoning and road improvements.

Skillman said little road construction would be needed to serve the complex.

Currently, traffic feeds into the Metro station from Route 50. Glendening said the state Department of Transportation already has allocated funds to build "fly-over ramps" that would ease cars into the Metro area from the Beltway-Route 50 interchange.