A house built by vocational students in Prince George's County public schools was on exhibit at a recent open house attended by about 150 students, parents, school officials and construction workers.

The two-story house, at 9928 Gay Dr., Rosaryville, is in the Holloway Estates subdivision. It has three bedrooms and features wall-to-wall carpeting, intercom, kitchen cabinetry of oak, full basement and built-in appliances. School officials say it is expected to sell for about $86,000.

The house was built during the past school year by 210 students in the Trades and Industries courses at Crossland, Gwynn Park and Laurel senior high schools and at Croom Vocational School. The programs are under the direction of Robert Brewrink and students' work on the house was supervised by Bill Hagan.

During the open house, Board of Education Chairwoman Jo Ann Bell and Superintendent Edward J. Feeney presented a certificate of appreciation to representatives of Washington Homes Inc., who supplied the building site and consulting and subcontracting services to the project. Lawrence Breneman, president of Washington Homes, received a certificate for his support of the project.

The house is the second built by Prince George's vocational education students. The first, a two-bedroom floor plan, was constructed during the previous school year at Gwynn Park Senior High School.