Janesville's Fence Regulations: The Rules That Matter

Every city handles fence regulations a little differently. In Janesville, Wisconsin, there are 2 distinct rules that residents and property owners should be aware of. Some are stricter than what neighboring cities enforce, and others are more relaxed. Here is what you need to know.

Height Limits

Janesville General Ordinances Sec. 18.32.035 (Chapter 18 Zoning, adopted by Ord. 2019-748 effective June 25, 2019) regulates fence heights by zoning district and setback area. In residential districts, semi-transparent fences are capped at 4 ft in the front setback, 6 ft in the corner side setback, and 6 ft in the interior side and rear setbacks. Privacy fences are limited to 30 inches in front and corner side setbacks but allowed up to 6 ft in interior side and rear yards. Business and office districts allow up to 4 ft (front), 6 ft (corner side), and 8 ft (interior side/rear). Industrial districts allow up to 12 ft in all setback areas. A fence permit from the Building Division is required before installation, except for fences under 16 ft in length, decorative fences under 2 ft, invisible pet fences, temporary event/construction fencing, and chicken runs.

Key details: Residential Front Setback: 4 ft semi-transparent; 30 in. privacy. Residential Corner Side Setback: 6 ft semi-transparent; 30 in. privacy. Residential Interior Side/Rear: 6 ft maximum. Business/Office Interior Side/Rear: 8 ft maximum. Industrial All Setbacks: 12 ft maximum.

Installing, constructing, or replacing a fence without the required permit, exceeding the height limits in Sec. 18.32.035 F, using prohibited materials or barbed/electric/razor wire in residential districts, or placing a fence in the public right-of-way are violations of Chapter 18. Penalties are governed by JGO Chapter 18.28 and may include municipal forfeitures, orders to modify or remove the noncompliant fence, and continuing-violation citations (each day a separate offense). Lawfully existing fences predating the June 25, 2019 effective date are grandfathered but may not be altered, enlarged, extended, or replaced except in full compliance with the current Chapter; only normal maintenance is permitted. Permit denials and conditions may be appealed to the Zoning Board of Appeals under Sec. 18.24.020.

Neighbor Fence Rules

WI Stat. §90.02 to 90.14 provides line fence cost-sharing for rural/agricultural land. Urban residential fences: each owner responsible for their own.

Key details: Rural: Cost-sharing statute (§90.02). Urban: Each owner responsible. Disputes: Town supervisor (rural). Written Agreement: Recommended.

Civil dispute for cost-sharing in urban areas. Rural: town supervisor adjudication per §90.02. Property line encroachments: survey and civil remedy.

The Bottom Line

Janesville's fence regulations 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 Janesville is broadly strict or permissive.

This guide is based on Janesville's current municipal code. Local rules can and do change, so check the individual ordinance pages for the latest details, penalties, and FAQs.