Proposed changes to the regulations that govern land use in New Canaan, now before the town, appear harmless but in fact have dramatic and harmful implications, according to a consultant hired by a set of neighbors opposed to them. Grace Farms’ proposed text amendments to the New Canaan Zoning Regulations appear “innocuous at first blush,” according to Don Poland, senior vice president and managing director of urban planning at East Hartford-based Goman+York. Yet if the Planning & Zoning Commission were to approve the organization’s application, it would “exacerbate the issues of appropriate scale, intensity of use and threats of encroachment across all zones—residential and commercial—in New Canaan,” Poland said in a report filed with P&Z. Specifically, Grace Farms—a “religious institution,” under the regulations—is for practical reasons seeking permission to have more than one such principal use designation. Yet “if the proposed regulation amendment is approved, not only can Grace Farms Foundation be allowed to continue its request for multiple principal uses, but also could subsequently apply for additional principal uses, such as Elderly Housing, Adult Housing, Congregate Care, Bed and Breakfast, Private School, Day Care and Private Recreation,” according to Poland’s May 15 report.