Black Hawk County, IA Outdoor Lighting: Billboard Lighting (2026)
Key Facts
- Illumination allowed
- None, accessory signs must be unlit
- Accessory sign size cap
- 32 square feet
- Accessory sign height/width cap
- 12 feet
- Billboards in ag/residential districts
- Prohibited
- Governing section
- BHCC § 18.100.050(A)
- Scope
- Unincorporated county only
Summary
In the agricultural and residential zoning districts of unincorporated Black Hawk County, Iowa, outdoor advertising signs and billboards are prohibited outright, and even the narrow accessory-sign exception the county allows must go unlit. BHCC § 18.100.050(A) caps that accessory sign at 32 square feet and 12 feet in height or width, and bars illumination entirely.
A. In the “A” agricultural district, “A-L” agricultural-limited district, “A-R” agricultural-residential district, “R-S” residential-suburban district and the “R-M” residential-multiple district, outdoor advertising signs and billboards are prohibited, except when accessory and customarily incidental to any principal permitted use within these districts. Any incidental accessory sign within these districts shall pertain only to a use conducted within the property except as provided for in this section. Any incidental accessory sign shall not contain more than 32 square feet and shall be no more than 12 feet high or no more than 12 feet in width, and shall not be illuminated.
Full Breakdown
050(A) governs the 'A' agricultural, 'A-L' agricultural-limited, 'A-R' agricultural-residential, 'R-S' residential-suburban and 'R-M' residential-multiple districts, the districts that cover most of unincorporated Black Hawk County. Outdoor advertising signs and billboards are prohibited in all of them, with one narrow carve-out: a sign that is accessory and customarily incidental to a principal permitted use already on the property. Even that accessory sign is tightly capped. ' That illumination ban has no exception written into the subsection, unlike the size and height limits. 040 lets on-premises wall, post, pole and monument signs in the 'C' and 'C-M' districts carry up to 300 square feet of surface area combined, with no county-wide lighting ban in that subsection.
The agricultural and residential illumination ban therefore singles out the county's farmland and residential subdivisions for a stricter standard than its commercial corridors get. Subsection (B) of the same section applies a matching sign cap, without the lighting language, to home occupation and home industry identification signs. The prohibition governs only unincorporated Black Hawk County; Waterloo, Cedar Falls and the county's other cities set their own outdoor-lighting and billboard standards inside city limits.
Violations & Fines
Illuminating an accessory sign in an agricultural or residential district, or exceeding its 32-square-foot, 12-foot cap, violates BHCC § 18.100.050(A) and is enforced as a Title 18 zoning infraction under BHCC § 18.145.010: $250 for a first offense, $500 for a second, $750 for a third or later offense, with each day the light or oversized sign remains a separate violation.
Frequently Asked Questions
Can a farm business light up its roadside sign at night in unincorporated Black Hawk County?
Are billboards allowed in the county's residential districts?
Does the lighting ban apply to commercial-district signs too?
What happens if I light an accessory sign anyway?
Sources & Official References
Other rules in Black Hawk County
Compare Black Hawk County to another location·View the Iowa outdoor lighting overview
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