The Herald and News says modular home builder Integrated Building Systems (IBS) in Klamath Falls, Oregon, has been acquired by OneBuild, Inc., of Seattle.  OneBuild also specializes in modular home construction, and plans to expand production in the Klamath Falls factory in southern Oregon, and add 30 construction-related jobs to the workforce.  A separate source estimated IBS had revenues of between five and ten million dollars.