Alameda, CA Accessory Structures: Carport Rules (2026)

Alameda's zoning code lists garages and carports among permitted accessory buildings governed by AMC Section 30-5. As accessory buildings, carports are limited to one story (not exceeding 10 feet at the sidewall/parapet point and up to 15 feet at the roof ridge), and accessory buildings together cannot cover more than 600 sq ft or 60% of the minimum required rear yard, whichever is greater. Setbacks follow the same accessory-building rules: a 5-foot side setback if located less than 75 feet from the front property line, with building to the property line allowed only where construction within 3 feet of the line is one-hour fire-resistive; and a minimum 6-foot separation from other buildings. Any off-street parking the carport provides must comply with AMC Section 30-7 (parking standards), including stall dimensions and access. The code also addresses what happens when a carport is removed for an ADU: per AMC 30-5.18, demolishing or converting a carport in conjunction with an ADU does not require replacing the parking space. Because Alameda did not appear to publish a stand-alone carport ordinance separate from these accessory-building and parking provisions, applicants should confirm specifics with the Permit Center. A building permit is required.