National Health Investors Inc. (NYSE: NHI) has purchased a 120-unit assisted-living facility for $20.2 million.

The Beaver Dam, Wisc. property, called Charleston House, will be leased to landmark Senior Living Communities for 15 years with renewal options.

Murfreesboro, Tenn.-based National Health Investors is a real-estate investment trust specializes in sale-leaseback transactions. The company has invested in independent living, assisted living, senior living, skilled-nursing facilities, medical office buildings and hospitals.