Norwalk, CT Accessory Structures: Shed & Carport Rules (2026)

Code § 118-910 governs where accessory buildings, including sheds, may sit on a residential lot. On an interior lot fronting one street, no accessory building may encroach on the half of the lot depth nearest the street (§ 118-910A). On an interior lot fronting two or more streets, the no-build zone widens to the quarter of the lot depth nearest each street (§ 118-910B). A corner lot fronting two streets is split by a line parallel to each street dividing the lot into two equal parts, with no accessory building allowed in the street-facing portion (§ 118-910C), and a corner lot fronting three or more streets again applies the quarter-depth rule to each street (§ 118-910D).

Section 118-910E sets the rear setback: no accessory building may sit within 5 feet of the rear lot line, rising to 10 feet once the lot is more than 100 feet deep. Height is governed separately by § 118-810H: an accessory building may occupy the required rear yard up to 15 feet, measured to the highest point of a flat roof or to the eave-to-ridge midpoint for other roof shapes, and that footprint counts toward the lot's maximum building coverage. These location and height rules apply specifically to accessory buildings in residence zones; a shed proposed in a business or industrial zone is reviewed under that zone's own accessory-use standards instead.