Waukesha County, WI Landscaping Rules: Tree Trimming (2026)
Key Facts
- Permit for ordinary trimming
- No
- Buffer zone
- 35 ft from OHWM
- Allowed in buffer
- Routine maintenance only
- Clear-cutting in buffer
- Prohibited
- Governing rule
- NR 115.05 / county SPO
Summary
On ordinary residential lots there is no county tree-trimming permit. But within 35 feet of a lake or stream's ordinary high-water mark (OHWM), removal or destruction of buffer vegetation is prohibited except routine maintenance under the county Shoreland Protection Ordinance and NR 115.
Removal or destruction of vegetation in the vegetative buffer zone shall be prohibited except for routine maintenance of vegetation, which means normally accepted horticultural practices that do not result in the loss of any layer of existing vegetation and do not require earth disturbance.
Full Breakdown
For most trimming away from water, the county requires no permit; cities/villages may have street-tree rules. The real county restriction is in the 35-foot shoreland vegetative buffer, where NR 115.05 bars vegetation removal except 'routine maintenance of vegetation.' Pruning that keeps every layer of existing vegetation and disturbs no earth is allowed; clear-cutting or removing trees in the buffer is not. Trimming inside a mapped Environmental Corridor or Isolated Natural Resource Area may also need a county Vegetation Removal permit.
Violations & Fines
Unauthorized shoreland vegetation removal is a zoning violation under the Shoreland Protection Ordinance; the county may require a restoration/replanting plan plus forfeitures for each day of violation.
Frequently Asked Questions
Can I trim trees near the lake?
Do I need a permit to trim a tree in my backyard?
Sources & Official References
Other rules in Waukesha County
Compare Waukesha County to another location·View the Wisconsin landscaping rules overview
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