Olmsted County, MN Outdoor Lighting: Light Trespass & Shielding (2026)
Key Facts
- Governing section
- Ch. 1400 § 10.16(E)
- Trespass standard
- no waste light onto adjacent property
- Commercial shielding requirement
- 90-degree cutoff on luminaire
- Measurement method
- light meter 6 inches above ground
- Applies in
- Eyota, Marion, Oronoco, Quincy townships only
Summary
Olmsted County's zoning code bans light trespass onto neighboring land: outdoor fixtures in every district it zones must be arranged so no waste light crosses the property line, and lighting in commercial and industrial zones must also carry a 90-degree cutoff shield. A refusal to allow the county's after-dark light-meter test is itself a citable violation.
b. There shall be no waste light, light trespass as shown in Figure A below. Figure A below does not conform to the lighting standard. Figure B may comply with these regulations if the light intensity is in accordance with Article 10 Section 10.16 Subdivision C. ... g. Glare. Direct or reflected glare from high temperature processes such as combustion or welding shall not be visible from any adjoining property.
Full Breakdown
16(E) of the Zoning Ordinance addresses light trespass separately from the general intensity cap in Subdivision C. 5 foot-candle limit in Subdivision C. a that directs and cuts off the beam at 90 degrees or less. g adds a glare rule: direct or reflected glare from high-temperature processes such as combustion or welding may not be visible from any adjoining property. Subdivision D governs how a light-trespass complaint is measured: a code officer holds a light meter six inches above the ground, aimed at the source, and takes readings with the light on and off; the difference is the intensity crossing onto the complaining neighbor's land.
An owner who will not switch the light off for the reading is cited for exceeding the standard by that refusal alone. 04 limits the county's own zoning authority to the unincorporated area and the Eyota, Marion, Oronoco, and Quincy townships it administers directly, this trespass standard does not reach properties inside Rochester, Stewartville, Byron, or the county's other cities, which set their own lighting rules.
Violations & Fines
A neighbor's light-trespass complaint is verified with the Subdivision D meter test; a fixture whose beam crosses the property line as shown in the ordinance's noncompliant Figure A, or a commercial fixture without the required 90-degree cutoff shield, is a violation of Section 10.16(E). Refusing to allow the on/off meter reading is itself grounds for a citation. Enforcement runs through the Zoning Administrator and Chapter 4000's citation and appeal process.
Frequently Asked Questions
Can my neighbor's outdoor light legally shine onto my property in Olmsted County?
What if the property owner won't let an inspector test the light?
Does this rule apply inside Rochester or Stewartville?
Sources & Official References
Other rules in Olmsted County
Compare Olmsted County to another location·View the Minnesota outdoor lighting overview
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