Banner Health has released what was described as a “preliminary draft proposal” for building a healthcare facility on a 28-acre site in Fort Collins, Colo.

More details will be provided in mid-January, said Banner spokeswoman Sara Quale, adding that “specific, hard-core plans” are still being developed.

The preliminary draft proposal presented to the city includes a hospital to be built in multiple phases, a one-story “health center,” a one-story medical office building and parking for 846 vehicles. According to the conceptual design, buildings would cover 211,500 square feet of the site.

Construction could begin as early as the end of 2013 and be completed as soon as the end of 2015, Quale said.

Based in Phoenix, Banner has 17 hospitals in seven states, including four in Colorado.

Last month, Jim Ferando, Banner Health Western Region president, said in a news release that “Development plans will be based upon community need, and growth in demand for Banner Health services through our partnerships with other quality healthcare organizations like Kaiser Permanente.”

The only existing hospital in Fort Collins is Poudre Valley Hospital, the University of Colorado Health system's two-campus 237-bed institution.

“For years, PVHS (Poudre Valley Health System), which is now part of University of Colorado Health, has been honored to be the preferred choice of patients and local physicians in Northern Colorado,” Rulon Stacey, University of Colorado Health president, said in an e-mail. “We are confident patients will continue to entrust us with their care in great numbers as they take advantage of the expanding services, the benefits of the latest proven advanced therapies, clinical trials and conveniences we continue to offer them.”