Benton County, OR Home Business: Zoning & Home Occupation Permits (2026)

BCC § 91.200 folds every home occupation into one of three size tiers set by BCC §§ 91.205, 91.210 and 91.215, on top of any additional requirements tied to the zone itself (BCC 55.205 in Exclusive Farm Use, 60.205 in Forest Conservation, or 89.400 for historic-register properties). On a parcel under one acre, the business is capped at 25% of the home's floor area or 500 square feet of an accessory structure. From one to five acres the accessory-structure cap rises to 750 square feet, and above five acres it rises again to 2,000 square feet, with the 25%-of-residence option staying constant across all three tiers.

Marijuana growing, processing, wholesaling or retailing is barred from every home occupation regardless of tier under BCC § 91.200(2). Any home occupation conducted in an accessory structure, or on the larger tiers conducted outside the home, needs a permit renewed every two years. BCC § 91.220 lets the Planning Official approve a conditional use permit expanding any of these dimensional standards by up to 50%, and BCC § 91.225 reminds applicants that a county permit does not override private deed restrictions. A separate building permit is required from the Development Department for any structural, electrical, plumbing or mechanical work tied to the home occupation under BCC § 91.230.