The Community Land Trust Association of West Marin and other local residents are mobilizing to purchase the 39-acre Coast Guard housing complex in Point Reyes when it will be sold next year by the federal government’s General Services Administration. “This started off kind of low-key, as if were in the distant future. All of a sudden it’s not. This is happening,” Marshall Livingston, a member of CLAM’s board of directors, said at Point Reyes Station Village Association meeting last Thursday. “The potential of already developed, already built housing is pretty remarkable, so we’re moving ahead.” The ad hoc group is focusing on how to secure funds before the auction starts, working with the county on requirements to discourage for-profit developers from bidding and applying for grants for an appraisal and wastewater feasibility study. Before fall, the G.S.A. will order an environmental site assessment to identify potential contamination, a lead-based paint inspection and possibly soil sampling, said Traci Madison, a regional spokeswoman for the administration. Although the government will complete its own appraisal, it will not be shared with bidders or the public; the sale schedule will be determined by the results of the environmental studies, Ms. Madison added. If no pollution or contamination needs to be remediated, a sale will likely occur next summer.