Close up image of a caretaker helping older woman walk

Columbia Pacific Advisors announced its plans to buy Hawthorn Retirement Group, a Washington-based firm that owns and operates senior housing communities.

The provider owns and operates communities in 20 states and two Canadian provinces.

It runs 55 communities with another 24 under construction. The acquisition includes the real estate portfolio, management and construction.

Columbia Pacific Advisors is based in Seattle. In the past decade the company has created ownership interests in more than 300 senior living communities.

Terms of the deal were not disclosed. Purchase was expected to be completed in late summer.