Milwaukee, WI Environmental Rules: Flood Zones (2026)
FEMA flood zone rules in Milwaukee, WI, also called floodplain regulations or special flood hazard area (SFHA) rules, determine flood insurance requirements and elevation standards for new construction.
Key Facts
- Governing chapter
- Zoning Code Ch. 295, Subch. 11
- Permit required for
- New construction, fill, substantial improvement
- Fill permit fee
- $50 plus $25 processing fee
- Location certificate fee
- $25
- Reviewing official
- Commissioner of Neighborhood Services
Summary
Milwaukee requires a floodplain development permit for any new construction, fill, or substantial improvement within a mapped 100-year floodplain, with elevation and flood-resistant construction standards enforced by the commissioner of neighborhood services.
If a proposed building site is in a flood-prone area, all new construction and substantial
improvements shall be:
a. Designed and anchored to prevent flotation, collapse or lateral movement of the structure
resulting from hydrodynamic and hydrostatic loads, including the effects of buoyancy;
b. Constructed with flood-resistant materials;
c. Constructed by methods and practices that minimize flood damage; and
d. In the case of mechanical and utility equipment, elevated to or above the flood protection
elevation.
3. If a subdivision or other proposed new development is in a flood-prone area, the commissioner
of neighborhood services shall assure that:
a. The proposed subdivision or other new development is consistent with the need to minimize
flood damage within the flood-prone area;
b. Public utilities and facilities such as sewer, gas, electrical and water systems are located and
constructed to minimize or eliminate flood damage; and
c. Adequate drainage is provided to reduce exposure to flood hazards.
4. All subdivision proposals, including manufactured home parks, shall include regional flood
elevation and floodway data for any development that meets the definition of a subdivision and all other
requirements of s. 295-1129.
5. No floodplain development shall result in either of the following:
Full Breakdown
The city's floodplain overlay zoning (Chapter 295, Subchapter 11) covers land shown on the official floodplain zoning map, including floodway, flood fringe and flood storage districts. Before building, filling or substantially improving property inside a mapped floodplain, an owner needs a permit reviewed by the commissioner of neighborhood services, who must confirm the site will be reasonably safe from flooding. New construction and substantial improvements must be anchored against flotation and lateral movement, built with flood-resistant materials, and have mechanical equipment elevated to or above the flood protection elevation. The commissioner must deny any permit that would raise the regional flood height. Fill permits cost $50 plus a $25 processing fee; a location certificate costs $25.
Violations & Fines
Building without a floodplain permit, filling a mapped floodplain, or raising the regional flood height can trigger permit denial, stop-work orders, and code-enforcement action under Chapter 295, Subchapter 11.
Frequently Asked Questions
Do I need a permit to build in Milwaukee's floodplain?
What construction standards apply in Milwaukee's floodplain?
What does a flood plain fill permit cost in Milwaukee?
Sources & Official References
Other rules in Milwaukee
Compare Milwaukee to another location·View the Wisconsin environmental rules overview
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Flood Zones in Nearby Cities
How other cities in Milwaukee County handle flood zones.