Accessory Structures in Springdale, AR: What Residents Actually Need to Know

If you live in Springdale or are thinking about moving there, accessory structures are one of those things you probably won't think about until they affect you directly. Springdale has 5 specific rules on the books covering different aspects of accessory structures, and some of them might surprise you.

Garage Conversions

Converting a Springdale garage into habitable space (a bedroom, in-law suite, home office, or ADU) requires both (1) zoning approval under the Springdale zoning code for the change of use, since the converted area no longer functions as accessory parking and may trigger off-street parking minimums or ADU classification; and (2) a building permit under the locally adopted International Residential Code. Conversions must meet IRC Chapter 3 requirements for habitable spaces including R310 emergency egress, R305 ceiling height, R314 smoke alarms, and R315 carbon monoxide alarms, and the zoning code's off-street parking minimums must still be satisfied after the garage is removed.

Key details: Building Code: Locally adopted IRC. Egress Standard: IRC R310 (5.7 sq ft minimum). Ceiling Height: IRC R305 (7 ft habitable rooms). Smoke/CO Alarms: IRC R314 / R315. Zoning Review: Change-of-use approval required.

Performing a garage conversion without permits violates the locally adopted IRC (A.C.A. §14-54-1604 building permit authority) and the Springdale zoning code. Enforcement includes stop-work orders, requirement to undo the conversion or obtain after-the-fact permits with elevated fees, and civil action under A.C.A. §14-56-417. Unpermitted habitable conversions that fail to meet IRC R310 egress are commonly cited in fire-injury cases and may expose the owner to liability. Properties with reduced parking below the zoning code minimum may also be cited.

ADU Rules

Springdale is a first-class city straddling Washington and Benton Counties in Northwest Arkansas (population approximately 84,000), regulating accessory dwelling units through its locally adopted zoning code. Arkansas has no statewide ADU preemption statute equivalent to California Government Code §66313 or Oregon ORS 197.312, so whether an ADU is permitted in Springdale is determined entirely by the local zoning ordinance under planning and zoning authority granted to Arkansas cities by A.C.A. §14-56-401 et seq. The Springdale code classifies dwelling units by district, and ADU permissibility (whether by right, by special use permit through the Planning Commission, or prohibited) depends on the underlying residential zone. The Springdale Code on Municode is the controlling local source: https://library.municode.com/ar/springdale.

Key details: State ADU Preemption: None (locally controlled). Local Authority: Springdale Zoning Code. Enabling Statute: A.C.A. §14-56-401+. Review Body: Planning Commission / BOA. Building Code: Locally adopted IRC.

Constructing or occupying an unpermitted ADU in Springdale is a zoning violation enforceable under A.C.A. §14-56-417 (zoning enforcement) and the local code's enforcement chapter. Springdale Planning & Community Development issues notices of violation and may seek civil penalties, injunctive relief in Washington County Circuit Court, and removal of unpermitted structures. Unpermitted construction additionally violates A.C.A. §14-54-1604 (building permit authority) and the locally adopted IRC, triggering stop-work orders from the Springdale Building Official. Continuing violations are treated as separate offenses for fine purposes.

Shed Rules

Sheds and similar accessory structures in Springdale are regulated through two layers: (1) the Springdale zoning code, which sets dimensional standards by district (size, height, setbacks, lot coverage, location relative to the principal dwelling); and (2) the locally adopted International Residential Code, which under IRC R105.2 typically exempts one-story detached accessory structures of 200 square feet or less from building permit requirements but does not waive zoning compliance. Springdale property owners generally need a zoning permit from the Planning & Community Development Department even when no building permit is required. The Springdale Code is hosted on Municode at https://library.municode.com/ar/springdale.

Key details: IRC Permit Exemption: ≤200 sq ft (IRC R105.2). Zoning Permit: Generally still required. Typical Location: Rear yard, behind front building line. Setbacks: Set by district (commonly 3-5 ft). Floodplain Review: Required near Spring Creek/Illinois River.

Installing a shed without a required zoning permit violates the Springdale zoning code, enforceable through notices of violation, cease-and-desist orders, and civil action in Washington County Circuit Court under A.C.A. §14-56-417. Unpermitted sheds in setbacks or exceeding lot coverage may be ordered removed. Sheds over the 200-square-foot IRC R105.2 threshold built without a building permit additionally violate the locally adopted IRC and trigger stop-work orders. Floodplain violations expose the city and owner to FEMA NFIP compliance issues.

ADU Permits

An accessory dwelling unit in Springdale requires permits from two municipal tracks: a zoning permit or special use permit through the Planning & Community Development Department confirming the ADU is permitted in the district under the Springdale zoning code, and a building permit from the Springdale Building Official under the locally adopted International Residential Code for the construction itself. Arkansas has no statewide ADU preemption like California's SB 9 or Oregon's HB 2001, so timelines, fees, hearing requirements, and approval criteria are set entirely by Springdale pursuant to A.C.A. §14-56-401 et seq. and applicable local ordinances.

Key details: Permit Tracks: Zoning + Building (both required). Zoning Authority: Springdale Planning & Community Development. Hearings (Special Use): Springdale Planning Commission. Variances: Board of Adjustment. Enabling Statute: A.C.A. §14-56-401+.

Constructing an ADU without permits violates the locally adopted IRC and the Springdale zoning code. Enforcement is through notice of violation, cease-and-desist orders, civil action in Washington County Circuit Court under A.C.A. §14-56-417, and stop-work orders from the Building Official. After-the-fact permits typically carry doubled fees and require the applicant to demonstrate code compliance through invasive inspections. Unpermitted occupancy without a Certificate of Occupancy is also a violation enforceable by Code Enforcement.

ADU Impact Fees

Arkansas has not enacted a statewide impact fee enabling statute, and Arkansas cities have historically had limited authority to impose development impact fees outside of negotiated agreements. Springdale does not impose general development impact fees on residential construction; ADU applicants typically face only standard zoning permit fees, building permit fees under the locally adopted IRC, and utility connection (tap) fees through Springdale Water Utilities (water and sewer) and the appropriate gas and electric utilities. School districts in Arkansas have no impact-fee authority. Recreation, traffic, and park impact fees are not generally assessed by Springdale on infill ADU construction.

Key details: AR Impact Fee Authority: No general statute. Springdale Impact Fees: Not imposed on ADUs. Permit Fees: Zoning + Building (set by ordinance). Utility Tap Fees: Through Springdale Water Utilities. School Impact Fees: Not authorized in AR.

Failure to pay required permit and tap fees prevents permit issuance and Certificate of Occupancy. Cities that attempt to collect unauthorized impact fees outside statutory authority face challenge under Arkansas constitutional and statutory limits on municipal exactions; courts have historically scrutinized exactions that lack a clear statutory basis. Fees collected without authority are subject to refund. Failure to obtain water or sewer service through proper channels can result in service termination and unauthorized connection penalties under Springdale Water Utilities tariffs.

If you are coming from a city with tighter rules, you will find Springdale gives residents more flexibility on adu impact fees.

The Bottom Line

Springdale's accessory structures rules are a mixed bag. Some areas are strict, others are relaxed, and the details matter. The best approach is to check the specific rule that applies to your situation rather than assuming Springdale is broadly strict or permissive.

Keep in mind that Springdale can amend these rules at any council meeting. For the most current version of any rule mentioned here, check the specific ordinance page, where we track updates as they happen.