Accessory Structures in Meridian, ID (2026)
2 verified accessory structures rules for Meridian, Idaho, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
Meridian caps accessory dwelling units at 900 square feet or half the primary home, requires a city permit, and limits every property to just one ADU.
Meridian Accessory Dwelling Unit Rules
Some RestrictionsMeridian City Code § 11-4-3-12
E. Maximum size. An accessory dwelling units shall be limited to a maximum of nine hundred (900) square feet or no more than fifty (50) percent of the primary dwelling, whichever is less, and no more than two (2) bedrooms constructed in accord with the adopted residential building code. ... G. Parking. ... The conversion of a covered parking area (garage/carport) into an accessory dwelling unit...
Shed & Carport Rules
Meridian exempts one-story detached tool and storage sheds, playhouses, and similar accessory structures from a building permit if their floor area is 120 square feet or less, under the city's local amendment to the International Building Code.
Meridian Shed Permit Exemption Under 120 Sq Ft
Some RestrictionsMeridian City Code § 10-1-2
One-story detached accessory structures used as tool and storage sheds, playhouses, emissions testing facilities, and similar uses, provided that the floor area is not greater than 120 square feet (11m 2 ).B.IBC section 107.2.6 shall be amended to read as follows: Site Plan. The construction documents submitted with the application for permit shall be accompanied by a site plan showing, to sca...
Looking for Ada County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Meridian city rules.
Accessory Structures in Ada County →