Before You Build in Brookfield, WI: Permit & Rule Checklist (2026)

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.

The City of Brookfield has unusually restrictive fence rules under Chapter 17 (Zoning) of the Municipal Code. Privacy fences are generally prohibited around the perimeter of a yard. Only a decorative fence that is at least 50% open and 4 feet or less in height (picket, wrought iron, or split rail) may enclose a yard. A solid privacy fence is allowed only as a 20-foot maximum length, 6-foot maximum height segment adjacent to a patio in the rear yard. Chain link fencing is permitted only for a small pet enclosure (max 100 sq ft, 6 ft high, in rear yard, 20 ft from lot line) or a children's activity enclosure (max 500 sq ft, 6 ft high). A fence permit is required (currently $80, plus a $50 minor plan review fee).

Brookfield requires pool barriers to prevent unsupervised child access. Minimum 48-inch height. Self-closing, self-latching gates. WI Stat. §145.17.

Brookfield requires building permits for pools, spas, and hot tubs. WI Uniform Dwelling Code governs. Inspections required.

Brookfield enforces pool safety requirements including anti-entrapment drain covers (VGB Act), barriers, and depth markers. WI Stat. §145.17 governs.

The City of Brookfield Zoning Code (Title 17) does not authorize accessory dwelling units (ADUs) as a permitted accessory use in its R-1 through R-4 residence districts. The code regulates only "accessory buildings" - garages, sheds, and yard maintenance structures - which cannot contain a separate dwelling unit. On parcels of 12,000 sq ft or less, total accessory building square footage is capped at 600 sq ft (Ch. 17.136). Accessory buildings have a maximum height of 15 ft in R-2 and minimum side and rear yard offsets of 5 feet for detached garages and yard maintenance buildings. Wis. Stat. Sec. 62.23 grants the city its zoning authority.

Sheds and other accessory buildings in the City of Brookfield are regulated by Chapter 17 (Zoning), with key residential standards in Section 17.136 (Miscellaneous Use and Design Restrictions). Sheds must be in the rear yard, are limited to 11 feet in height, must sit at least 5 feet from side and rear lot lines, and at least 10 feet from the principal dwelling. Total accessory coverage is capped at 20 percent of the rear yard or 625 square feet, whichever is less, and only one accessory building is allowed by right in residential districts. A building permit is required, and screening from the street and lot lines is required.

Outdoor burning regulated by WI DNR and local ordinance. Brookfield may prohibit most open burning. Garbage burning always illegal. DNR permits required in protection areas.