The Marin County Planning Commission sided with a San Geronimo Valley landowner last month in his quest to secure approval for a 93-square-foot addition to a second unit—despite the county staff’s argument that the addition is illegal. Commissioners unanimously ruled in favor of owner Dylan Arroyo, swayed more by personal pleas to keep the home—occupied by his father-in-law, Paul Sanner—intact than by strict interpretations of code.
The commission’s ruling leaves the Community Development Agency in…