Dublin, CA Accessory Structures: Shed Rules (2026)

Dublin regulates sheds and similar accessory structures through both its Building Code and Zoning Ordinance Chapter 8.40. The City's Building & Safety Division handout states that a building permit is required for any detached structure greater than 120 square feet of floor area, and for any structure attached to the main dwelling regardless of size. Open-roof shade structures (that do not shed water) need a permit if they exceed 1,000 square feet or 10 feet in height. Structures under those thresholds are exempt from a building permit, though permits are still required for any electrical, plumbing, or mechanical work (Dublin Municipal Code Section 7.28.310). Examples listed include tool or storage sheds, playhouses, covered patios, and gazebos. For zoning, Section 8.40.020 sets a maximum height of 15 feet for detached accessory structures unless otherwise specified. No accessory structure (other than an approved entry feature) may be located in the front yard or in the area between the front yard and the residence. The maximum coverage of the required rear yard by all accessory structures (except swimming pools) is 30%, and the distance between a detached accessory structure and other structures on the same lot is determined by the Building Code. At least one gated side yard must keep a 36-inch-wide unobstructed path to the rear yard. Confirm setbacks, size, and coverage with the Planning Division at (925) 833-6610 before building.