Town houses have gone on the market at Rippon Landing, a 436-acre development bordering the Neabsco Creek in Prince William County.

Prices of the contemporary units, which have two to five bedrooms, range from about $43,000 to $52,490.Collins & Kronstadt, Leahy, Hogan & Collins did the designs, which call for three levels of living area, balconies and private front and rear patios. Four of the models have been decorated by Bloomingdale's.

Rippon Landing Associates, the builder-developer based in Woodbury, N.Y., is a limited partnership headed by Bloomingdale Properties, Inc., based in New York City. A spokesman said that approximately $5 million was paid for the wooded, hilly site on which 1,065 town houses and 820 rental apartment dwellings are expected to be developed in five neighborhoods over the next seven years. Current planning does not include any single-family houses.

The site near Route 1 and Blackburn Road had been part of a large estate called Rippon Lodge. Rear Adm. Richard Blackburn Black, a descendant of the original owner, retains the historic lodge and some adjacent land and buildings. He sold much of the adjoining property to the developers of Rippon Landing.

Total development costs are estimated at $100 million. The project will include a commerical center with shops, offices and commuter parking on the Route 1 boundary. A new road now is under construction to provide closer access to Route 1.