Dissatisfaction is rising about development restrictions along San Geronimo Creek that were approved by county supervisors in 2022. The county Planning Commission is set to hear an appeal on Monday from a San Geronimo Valley property owner who has been ordered to move or demolish several accessory structures that were built without permits within a restricted area close to the creek. “This is the first test case that highlights some of the challenges with the ordinance and how we may need to work with it and make some allowances for existing developments to remain,” said Breeze Kinsey, who operates CivicNet, a planning consultancy, together with his father, former Marin County supervisor Steve Kinsey. The regulations also might have played a role in a failed effort by the Two Valleys Community Land Trust to create five affordable dwellings at 6956 Sir Francis Drake Ave. in Forest Knolls.