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Winnebago County, IL Fence Regulations: Fence Permit Requirements (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Permit trigger
Any erected fence, per §4.7.1(c)
Application filed with
Planning and Zoning Officer
Required attachment
Dimensioned building-plot drawing
No permit = no C.O.
Blocks occupancy certificate (§4.7.3)
First zoning fine
$75 (§4-4(j)(6))

Summary

Winnebago County requires a zoning permit from the Planning and Zoning Officer before erecting any fence, since a fence counts as a "structure" under the UDO's definitions and § 4.7.1 requires clearance to "erect, construct, reconstruct, enlarge, alter or move any building or structure." Building one without a permit exposes the owner to a Chapter 90 zoning fine starting at $75 under § 4-4(j)(6).

City-specific rules exist: Rockford has its own fence permit requirements rules that differ from Winnebago County's county-level regulations. If you live in Rockford, check the city-specific page instead.

4.7.1 Zoning Clearance (Permit). A zoning permit shall be obtained from the Planning and Zoning Officer before starting: a.To establish any new use of property;b.To excavate for or build any slab or foundation;c.To erect, construct, reconstruct, enlarge, alter or move any building or structure;d.To change the use of any building, structure, or land from one use to another, ore.In the case of nonconforming uses, to change from one use to another;f.To dig or drill any well;g.To install, add to or repair any sewerage disposal system;h.To install a sign, but only if required per Article 22;i.To install an off-street parking and loading area, but only if required per Article 23 or Article 20;j.To install landscaping, but only if required elsewhere in this Ordinance; ork.Any other action not listed herein but as required elsewhere in this Ordinance.

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 64).

Full Breakdown

1 lists the actions that trigger a zoning permit before work starts, including establishing a new use, building a slab or foundation, and erecting, constructing, reconstructing, enlarging, altering or moving any building or structure. The UDO's own definitions article defines a "Structure" as "anything erected, the use of which requires more or less permanent location on the ground," and separately defines a "Fence" as an artificially constructed barrier erected to enclose or screen an area, so a fence falls squarely within the permit trigger. The application itself must be filed in writing with the Planning and Zoning Officer, state the property's legal description, PIN or address, name the owner and applicant, describe the use being established, and attach a dimensioned drawing of the building plot showing the location of structures and lot areas to be used; the office keeps every application and issued permit on file for public reference.

3 no certificate of occupancy issues until every condition of that zoning permit is satisfied. The permit process establishes only that a fence may be built; the actual height, material and setback standards that govern what the fence can look like are set out separately in the fence-standards section of the same Article.

Violations & Fines

Building or altering a fence without first securing the § 4.7.1 zoning permit is treated as a Chapter 90 zoning violation. Under § 4-4(j)(6), a code enforcement officer may first attempt an informal resolution, but if that fails the county's determinate fine schedule applies: $75 for a first offense, $150 for a second, $350 for a third, and a mandatory personal appearance before the hearing officer for a fourth or later violation, with each day the fence remains unpermitted potentially counted separately.

Frequently Asked Questions

Do I need a permit to build a fence in unincorporated Winnebago County?
Yes. Because a fence is a "structure" under the UDO's definitions, erecting one triggers the zoning permit requirement of § 4.7.1, the same clearance needed before building any slab, foundation or structure on the property.
What has to be included in a Winnebago County fence permit application?
A written, filed application to the Planning and Zoning Officer stating the property's legal description or PIN, the owner and applicant names, a description of the proposed use, and a dimensioned drawing of the building plot showing where the fence and other structures sit.
What happens if I put up a fence without a permit?
It's enforced as a zoning violation under § 4-4(j)(6): a $75 fine for a first offense, $150 for a second, $350 for a third, and a required in-person hearing appearance for a fourth or later offense, plus the building official can withhold a certificate of occupancy until it's resolved.
Does the fence permit also cover how tall or what material my fence can be?
No. The zoning permit under § 4.7.1 only authorizes that a structure may be built; the fence's allowed height, material and setback are governed separately elsewhere in the same Article of the UDO.

Sources & Official References

Other rules in Winnebago County

All Winnebago County rules

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