Gonzaga University is looking to add a $6 million golf and tennis center to its ongoing development plans, documents on file with the city of Spokane show.

The university has submitted preliminary plans showing it proposes to construct a 73,700-square-foot indoor sports complex that would accommodate six regulation varsity tennis courts for practice and tournament play, and a golf practice facility with greens and bunkers.

The building also would include loxker areas, training rooms, showers, an athletic lounge, a central operations office, and coaches' offices, plans show.

The university hopes to begin construction in April, documents say.

University represent-atives with knowledge of the project couldn't be reached for comment.

The tennis and golf complex would be constructed on a 3-acre parcel of vacant land at 1220 N. Superior. The site is a few blocks east of Gonzaga's main campus, near the Spokane River, just south of Mission Park.

The university bought the property for $900,000 in 2007, Spokane County Assessor's records show.

Preliminary plans don't indicate whether a contractor has been selected for the project. A site plan included in a predevelopment application is credited to Adams & Clark Inc., a Spokane engineering concern.

ALCS Architects PS, of Spokane, drew up the conceptual design for the proposed complex in 2008, when the university demolished tennis courts to make room for soccer field improvements on the southwest part of the campus, Gonzaga's website says.

At that time, the university moved its tennis matches to the Spokane Racquet Club, on the South Hill.

In other work, Gonzaga currently is completing construction of the $14 million Boone Avenue Retail Center on the block bounded by Hamilton and Cincinnati streets and Boone and Desmet avenues.

That 250,000-square-foot, four-level complex will include 650 parking spaces, meeting rooms, temporary student dining space, and future retail space.

The university bookstore also will be moved permanently to the BARC from the student center known as the COG. Vandervert Construction Inc., of Spokane, is the contractor on the BARC project, and ALSC Architects designed it.

Gonzaga also announced last month that, pending approval of the university's board of trustees, it plans to begin work this year on a 165,000-square-foot, four-story university center, which would replace the COG, at 702 E. Desmet.

The university declines to disclose a cost estimate for the project.

The new student center would support student clubs and organizations, dining services, the university's ministry, student publications, and service learning, the university said, adding that it would include an 800-seat multipurpose ballroom, a 200-seat auditorium, and meeting spaces.

Portland-based Hoffman Construction Co. would be the contractor on the project. Opsis Architecture LLP, of Portland, and Bernardo Wills Architects PS, of Spokane, are designing it.