All districts
Detached accessory buildings (garages, sheds, similar structures) in residential districts follow § 770-22A. In nonresidential districts, accessory buildings follow the same placement, coverage, and height rules as principal buildings in that district (§ 770-22B).
For residential accessory buildings:
- At most two accessory structures per lot (§ 770-22A(1)).
- Side or rear yards only. A structure not entirely in the rear yard must meet the principal building's setbacks (§ 770-22A(2)).
- A structure entirely in the rear yard sits at least 3 feet from rear and side lot lines (§ 770-22A(4)). A garage entered at right angles to an alley sits 10 feet from the rear lot line (§ 770-22A(10)).
- Size: the combined floor area of all accessory buildings is capped at 10 percent of the lot area, and never more than 800 square feet of total ground floor (§ 770-22A(5)). Accessory buildings count toward lot coverage (§ 770-22A(6)).
- Height: 13 feet, or up to 15 feet with one extra foot of setback for each extra foot of height (§ 770-22A(7)). Width may not exceed 50 percent of the principal building's facade width (§ 770-22A(8)).
- Corner lots: no accessory building within 25 feet of a common residential side line may sit nearer the side street than the required front setback (§ 770-22A(9)).
- An accessory building may not combine utility services in a way that makes it easily convertible to habitable space (§ 770-22A(11)).
- The roof must be mansard, hip, gambrel, or gable, compatible with the house (§ 770-22A(12)).