Barndominium with a Shop in Arkansas

Three different bodies, and none of them is the building department. The Arkansas Fire Prevention Code removes electrical from the building code outright: Volume III's Chapters 34 through 43 are each deleted and refer to the National Electrical Code as adopted by the Arkansas Board of Electrical Examiners. Licensing is a state matter cities may not duplicate — A.C.A. § 17-28-305(a) provides that an individual licensed under the chapter is not subject to examination or licensing by any city or county in order to perform electrical work. What survives locally is standards and permits: § 17-28-305(b)(1) lets a city prescribe standards for materials, construction, installation and inspection provided they do not conflict with the Board's, and § 17-28-305(c) lets any city or county establish by ordinance a system of permits and inspections for electrical work. That county power matters more than it used to. Subsection (b)(3), which had let a city extend electrical inspection jurisdiction into its territorial planning jurisdiction by agreement, was repealed by Act 314 of 2025 — so outside a city's limits the county is now the only local body that can run an electrical permit system at all.

Ask before the plan is drawn, because a residential district's answer is usually narrower than the building. The City of Jonesboro's Planning and Development Guide prints the residential accessory use provisions, and a home occupation is allowed there only on twelve conditions. It must be clearly secondary to the use of the dwelling as a residence and must not change the residential character or appearance of the lot in any visible manner. It may not employ any persons not residing on the premises. It may occupy no more than twenty-five percent of the total floor area of the residence. There may be no external display of goods and no storage of supplies or equipment outside; not more than one truck of not more than three-quarter-ton capacity, and no semi-trailers; and customers may visit only between 8 am and 8 pm, no more than six in any single day. Two of the twelve reach a barndominium hardest: the seventh confines the occupation wholly to the principal residential structure and bars it from accessory buildings and garages, and the prohibited list names the repair or assembly of vehicles or equipment with internal combustion engines. Outside a city the gate is different rather than absent — Benton County, which has never adopted zoning, still requires a Home and Rural Based Occupation permit.

Arkansas amended the section that answers this, so the state's own text governs rather than the model code's. R302.5.1 of Volume III provides that openings from a private garage directly into a room used for sleeping purposes are not permitted. Other openings between the garage and residence must be equipped with solid wood doors not less than 1 3/8 inches in thickness, solid or honeycomb-core steel doors of that thickness, or 20-minute fire-rated doors — and those doors must be self-latching and equipped with a self-closing or automatic-closing device. That last clause is the one field crews miss: a door that meets the thickness and then sits propped open on a hook does not comply. R309.5, also amended, requires private garages to be sprinklered where the garage wall has been designed on Table R302.1(2), Note a. Two things worth keeping straight. Arkansas struck the model requirement for automatic sprinklers in one- and two-family dwellings at R313.1 and R313.2, so sprinklers in the dwelling half are not mandated statewide. And detaching removes a different requirement altogether: R302.1's Exception 2 excepts walls of individual dwelling units and their accessory structures located on the same lot.

Inside Little Rock, no, and the ordinance says so by name. Sec. 36-252(b) defines an accessory building as a constructed edifice designed to stand alone, more or less permanently, then narrows it: only those buildings specifically designed and constructed for the purpose of serving as an accessory building meet the definition. It goes on to name what does not qualify in a residentially zoned district — cargo containers, truck boxes and trailers, train cars and cabooses, mobile homes, manufactured homes and recreational vehicles or trailers. The teeth are in what follows. Such items are expressly not treated as nonconforming structures under Article III, so the usual grandfathering of a thing that predates a rule does not reach them, and anything already in use when the ordinance took effect must be removed within six months from notification by the city of the property owner. That is a removal obligation, not a fine. Fayetteville closes a related door from the other direction: UDC § 164.02(A)(1) bars erecting an accessory structure before the principal structure unless the Planning Commission approves it as a conditional use, and provides that one erected first shall not be inhabited.

It carries different loads, and at least one Arkansas code office treats the two differently on paper. The statewide floor is thin: R403.1.4 sets footings a minimum of 12 inches below the undisturbed ground surface, and Table R301.2 is printed blank, so any frost figure comes from the local jurisdiction or from nowhere. Fayetteville fills it in with more detail than any other Arkansas jurisdiction publishes. UDC § 173.02(B)(2)(a) requires footing bottoms a minimum of 24 inches below finish grade; sets minimum footing width at 18 inches for a one-storey building of 1,400 square feet or less and 24 inches for two-storey buildings and buildings over 1,400 square feet; requires two #4 bars in an 18-inch footing and three #4 in a 24-inch; and sets thickness at a minimum of 12 inches of 3,000 psi concrete. Then § 173.02(B)(2)(b) draws the line this page is about — a builder of a single-family residence must have the foundation plans designed, approved and sealed by a professional engineer or architect, and accessory structures that do not serve as dwelling units are exempt from that requirement. The seal follows the dwelling, not the shop.

Height is where a shop stops being a floor-plan decision and becomes a siting decision, and two named jurisdictions bite differently. Fayetteville ties setback to height directly: accessory structures 10 feet or less in height get reduced setbacks of 3 feet at the side and 5 feet at the rear, while anything taller takes the full district setbacks, which in the R-A district means 20 feet at each side and 35 feet at the rear. A 14-foot overhead door is not available under a 10-foot eave, so the door specification moves the building on the lot. Little Rock regulates position instead: Sec. 36-156(a)(2)c provides that accessory buildings in the R-1 through R-4A districts shall not be located closer than sixty feet to the front property line or fifteen feet from a street side line, may not occupy more than thirty percent of the required rear yard area, and shall in all instances be subordinate to the principal structure on the lot. Both rules reward settling the door schedule before the site plan rather than after it.