Jeff Hyland, a luxurious serious estate powerhouse who co-launched the brokerage Hilton & Hyland and assisted reshape the staid marketplace, has died at 75. His brokerage declared the news in an Instagram article, stating he died Wednesday just after “privately battling cancer for the previous year.” “I am thankful to all of you for sharing your wishes and prayers all through Jeff’s health issues. Your guidance and kindness has touched me deeply and I know you mourn with me now,” his spouse, artist Lori Hyland, wrote in the article. An L.A. native, Hyland opened Hilton & Hyland with hotel scion Rick Hilton in 1993, and in excess of the previous…