A development slated to bring more than 140 units of housing for older adults in Penobscot County is for sale. The future home of Deer Park Village off Bradley Road in Milford hit the market on June 18 with an asking price of $1.8 million. The 55-acre site with 400 feet of frontage on the Penobscot River is projected to hold 71 ranch-style duplexes, totaling 142 condominiums for adults ages 55 and older. To date, the seller has installed infrast…