AUBURN – St. Mary’s Health System plans to make its first major foray into Auburn with a 30,000-square-foot medical building on seven acres at the corner of Turner Street and Gracelawn Road.

The $7.3 million building will offer lab services, radiology services, a prevention and wellness clinic and an office with three doctors who specialize in senior health. It will also include a walk-in clinic, though its hours of operation and other details haven’t been worked out yet.

“We’re still trying to define that,” spokeswoman Jennifer Radel said.

St. Mary’s will also move its sleep disorder center, diabetes center and WorkMed occupational rehabilitation program to the new building.

This will be the first major Auburn facility for the Lewiston-based St. Mary’s. Community Clinical Services, which is an affiliate of St. Mary’s and has a primary care practice on Court Street.

Radel said St. Mary’s chose the Auburn site both because of the location and the amount of parking it will provide.

“This gives us a presence there and a convenience for people living there,” she said.

The project still must be approved Auburn Planning Board. If the facility is approved, St. Mary’s slated to start construction in September and finish in the fall of 2009.

The Auburn facility is one of three major projects St. Mary’s is working on. It has also started a $9.8 million expansion of its emergency room and a $1.6 million renovation to its transitional rehab unit at d’Youville Pavilion.

On June 1, the Sisters of Charity Health System changed its name to the St. Mary’s Health System.