PHOENIX—Colliers International in Greater Phoenix recently completed two sales for one buyer, Investment Property Associates of Grand Haven, MI. The buyer purchased the 395-unit Sienna Springs apartment complex for $20.5 million and the adjacent Willowick Square office building for $5.9 million, both in Phoenix.

Both properties are located on the southwest corner of North 16th Street and Colter Street within a mile from the Camelback Corridor. IPA plans to redevelop the sites with high-end multifamily and senior apartments, and possibly some mixed-use components.

Liv Biltmore LLC, an entity of IPA, purchased Sienna Springs, 5120 N. 16th Street, from P.B. Bell (Bellstone VII LLC) of Phoenix. The same buyer acquired Willowick Square, at 5150 N. 16th St., from Presson Advisory LLC of Phoenix.