Unincorporated Benton County, Arkansas requires building permits for homes, attached structures, and new plumbing, electrical, or HVAC work, but exempts specified detached accessory structures with no living space1. The county has no zoning outside cities, although subdivision, business, floodplain, and other development reviews still apply2. Septic systems and wells go through the Arkansas Department of Health3.
At a glance
- Building permit
- Required for homes, attached structures and regulated trade work; specified detached accessory structures without living space are exempt1
- Zoning
- No zoning in unincorporated Benton County; subdivisions, businesses and other development reviews still apply2
- Septic permits
- Issued by the Arkansas Department of Health, not the county3
- Owner-builder exemption
- Yes, you can build your own single-family home without a contractor license, up to one residence per calendar year45
- RV during construction
- A trailer, coach or mobile home used temporarily during dwelling construction needs Planning Board review and approval6
- Floodplain development
- A county permit is required before covered development in a Special Flood Hazard Area7
Who to call
Building permits
Benton County Building Safety Department
Building, electrical, plumbing and HVAC permits and inspections for unincorporated Benton County
Administration Building, 215 E Central Ave., Bentonville, AR 72712
Planning & zoning
Benton County Planning Department
Subdivision and business review, stormwater, temporary-use, home/rural occupation and floodplain development permits for unincorporated Benton County
Administration Building, 215 E Central Ave, Bentonville, AR 72712 (Third Floor)
Septic permits
Arkansas Department of Health (Benton County septic and well permitting)
Septic (OSSF) and well permits for Benton County
Roads & driveways
Maintains county-maintained roads; the office to contact for a new driveway connection to a county road
1204 SW 14th St. Suite 6, Bentonville, AR 72712
Contact details are copied from each office’s official page and were checked against it on September 29, 2026.
Do you need a building permit in Benton County, Arkansas?
Yes, for a home and many related projects. Unincorporated Benton County requires permits for structures attached to a residence and for new plumbing, electrical, or HVAC work1. Specified detached Group U structures without living space—including shops, carports, storage buildings, decks, and fences—are exempt from the building permit, but the Planning Office still reviews the site plan1. Inspections depend on the permitted project8. Benton County also enforces adopted codes in unincorporated areas, including the Arkansas Fire Prevention Code and separate electrical, plumbing, fuel-gas, mechanical, and energy codes9. An owner may build the owner's own residence under Arkansas's contractor-license exemption, but that exemption does not remove applicable permits, codes, or inspections5.
Who is the Benton County building department, and how do you reach them?
The Benton County Building Safety Department handles building, electrical, plumbing, and HVAC permits and project-dependent inspections in unincorporated Benton County108. Reach the office at 479-271-1003, by text at 475-522-1003, by email at [email protected], or through its online portal10. Published fees include valuation-based new-construction fees, a 3% online card charge, a $50 reinspection fee, and a $100 mobile or manufactured-home permit11. Building Safety may require the approved septic permit before issuing a plumbing permit10. Inspections require 24-hour notice, and final inspections for new construction are not offered on Fridays10. For commercial work, the county releases the Certificate of Occupancy only after the required final building, fire, and Planning inspections pass12.
Does Benton County have zoning?
Unincorporated Benton County has no county zoning districts, but that does not make rural land unregulated213. Benton County Planning reviews proposed businesses and subdivisions, and divisions creating two or more parcels fall under the county's subdivision process14. Planning also handles stormwater, temporary-use, home and rural occupation, and floodplain-development permits15. Inside city limits, the municipality has jurisdiction and its rules can differ from the county's16. We could not confirm a countywide minimum dwelling size, minimum lot size, lot-coverage limit, building-height limit, or the numeric setbacks that apply to a particular unincorporated parcel; ask Benton County Planning at (479) 464-6166 before relying on the absence of zoning15.
How do septic permits work in Benton County?
The Arkansas Department of Health regulates, inspects, and issues permits for septic systems and wells in Benton County; call its Benton County contact at (479) 986-130017. Benton County Building Safety may require a copy of the approved septic permit before issuing a plumbing permit10. Only 6.1% of Benton County soils are rated without severe limits for a conventional drain field, so establish septic feasibility before fixing the house site or purchase price18. If sanitary sewer is available within 300 feet of the point where the building sewer exits and can be reached without crossing another owner's property, Arkansas requires connection instead of an onsite system19. We could not confirm the permit category for a private domestic well; ask the Department of Health before drilling17.
Can you live in an RV or tiny home on your land in Benton County?
A trailer, coach, or mobile home used as a temporary residence while a dwelling is under construction in unincorporated Benton County requires Planning Board review and approval6. The application is due at least 15 calendar days before the proposed use; the Board may impose conditions, and the applicable duration is capped at 90 calendar days for a use not occupying a structure or one year for other uses or structures unless the Board sets a shorter period6. In flood zones AH and AE, an RV must remain for fewer than 180 consecutive days, stay licensed and ready for highway use, or meet the specified permit, elevation, and anchoring requirements20. We could not confirm a general rule for long-term residence in one RV or tiny home outside the construction and floodplain situations; ask Planning before occupancy15.
Building a home in Benton County: the steps, in order
- Confirm whether the parcel is unincorporated; land inside a city follows that municipality's rules16.
- Send the site plan to Benton County Planning and determine whether subdivision, stormwater, temporary-use, or floodplain review applies21.
- If the site lies in a Special Flood Hazard Area, obtain the Floodplain Development Permit before applying for county construction permits7.
- Secure Department of Health septic approval, or confirm whether the property's sewer situation requires connection319.
- Apply to Building Safety for the building and trade permits that cover the project; the county publishes applications, checklists, and online submission routes21.
- Schedule the project-dependent inspections with at least 24-hour notice810.
- Obtain the no-fee county driveway permit before building a new connection to a county road, or the state permit for access on state highway right-of-way2223.
What to check before you buy land in Benton County
Put wastewater, flood risk, legal access, and jurisdiction ahead of the house plan. Only 6.1% of Benton County soils are rated without severe limits for a conventional drain field, while 66.3% of county land has a slope of 15% or less; a parcel-specific soil evaluation and survey matter more than county averages1824. In a Special Flood Hazard Area, covered work—including clearing, grading, fill, excavation, structures, driveways, and individual water or sewer installations—needs a Floodplain Development Permit before county construction permits7. Verify whether access meets a county road or state highway because each has a separate permit path2223. If the seller proposes to divide the tract, confirm subdivision review and plat filing before closing1425. The effective property-tax rate is 0.6%, and the median annual bill is $1,7312627.
Watch-outs
- Confirm the parcel is outside city limits before relying on Benton County's no-zoning rule; municipal regulations vary inside incorporated areas16.
- Temporary residential use of a trailer, coach, or mobile home during construction requires Planning Board approval, while general long-term RV or tiny-home occupancy remains unconfirmed6.
- Floodplain rules independently restrict RV placement in zones AH and AE and require permits before many kinds of site work in a Special Flood Hazard Area207.
- Benton County's own building-safety FAQ page lists 479-271-1057 for the Road Department's driveway permits, but the Road Department's own page lists 479-271-1052; call 479-271-1052 to reach the department directly1028.
Sources
- Building Safety FAQ, quoted and re-checked
- County Planning FAQ, quoted and re-checked
- Benton County AR - Building Safety FAQ (2026 county census)
- Arkansas Residential Contractors Committee Rules and Statutes (2026 county census)
- Arkansas Residential Contractors Committee Rules and Statutes (Arkansas statewide rule), quoted and re-checked
- Planning and Development Regulations of Benton County, Chapter VII, §7.5 Temporary Uses, quoted and re-checked
- Flood Management Program, quoted and re-checked
- Building Safety FAQ, quoted and re-checked
- Code Information, quoted and re-checked
- Benton County Building Safety Department (bentoncountyar.gov)
- Building Safety Fees, quoted and re-checked
- Commercial Permits, quoted and re-checked
- County Planning Zoning, quoted and re-checked
- County Planning FAQ, quoted and re-checked
- Benton County Planning Department (bentoncountyar.gov)
- County Planning FAQ, quoted and re-checked
- Arkansas Department of Health (Benton County septic and well permitting) (bentoncountyar.gov)
- Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
- 14 CAR § 21-301. Generally (Arkansas statewide rule), quoted and re-checked
- Planning and Development Regulations of Benton County, Chapter X, §10.4 Recreational Vehicles, quoted and re-checked
- County Planning FAQ, quoted and re-checked
- Road Permits, quoted and re-checked
- Regulations: Rules for Access Driveways to State Highways (Arkansas statewide rule), quoted and re-checked
- Share of land at 15% slope or less: Bolthole Index county data
- 15 CAR § 281-301. Publication of results (Arkansas statewide rule), quoted and re-checked
- Effective property tax rate: Bolthole Index county data
- Median property tax bill: Bolthole Index county data
- Benton County Road Department (bentoncountyar.gov)
Written September 29, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.