Principal Financial Group Inc., the big Des Moines, Iowa-based financial-services company, says it plans to move its Spokane retirement services office from Rock Pointe Corporate Center north of downtown Spokane to Worthy Enterprises LLC's new River View Corporate Center, in Spokane Valley.

Principal has leased 35,000 square feet of space in the five-story building, which is located at 16201 E. Indiana, and plans to move all 170 of its Spokane employees there beginning in December, says Terri Hale, a Des Moines-based spokeswoman for the company.

Its Spokane operation currently leases 36,000 square feet of space in the Rock Pointe complex, which is located north of Boone Avenue, between Washington and Atlantic streets.

Worthy Enterprises opened the 250,000-square-foot River View building in January, and it now has about 200,000 square feet of space available for lease, says Jack Marr, the company's director of leasing.

The building is located east of Sullivan Road and a short distance east of Spokane Valley Mall, near the Spokane River and Interstate 90. Spokane-based Madsen Mitchell Evenson & Conrad PLLC, of Spokane, designed the building.

Principal Financial's Hale calls River View an "attractive" new office building. She says Principal will be able to lower its lease payments by relocating, and that the new location offers amenities for employees, including an onsite fitness facility, covered parking, and access to the Centennial Trail.

"This move reflects our optimism about our future in Spokane," Hale says. "The new location will accommodate any potential growth down the road."

Principal Financial provides retirement and investment services, life and health insurance, and banking services.

Marc Mowrer and Craig Soehren, of Kiemle & Hagood Co. of Spokane, represented Principal Financial in the lease transaction.

Spokane businessman Walt Worthy, who heads Worthy Enterprises, sold the Rock Pointe complex in 2005 to Prium Companies LLC, a Tacoma-based developer, for $82.8 million. Worthy developed Rock Pointe.