BELLEVUE — Former Everett Councilman Shannon Affholter is preparing to resign as executive director of the Master Builders Association of King and Snohomish Counties next month to become chief operating officer for a major Pacific Northwest land-development company.

Affholter plans to start at Oakpointe Communities in November.

“It’s a great opportunity,” Affholter said last week. “It was one of those things that’s hard to turn down.”

Kirkland-based Oakpointe is working on two huge, master-planned communities in southeast King County. Ten Trails features more than 6,000 homes in Black Diamond. Lakepointe, in Covington, includes up to 1,500 homes plus commercial buildings.

Affholter’s transition comes four years after he left the City Council, where he won his first election in 2007. He plans to stay in Everett, where his children attend school.

The Master Builders represent some 2,900 local companies through political advocacy, administering health plans and other benefits.

Oakpointe was acquired in June by CalAtlantic Homes, of Arlington, Virginia, one of the nation’s largest homebuilders.