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Kirkwood, MO Outdoor Lighting: Light Trespass & Shielding (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

General off-site cap
0.5 footcandle at grade
Cap onto single-family use
0.1 footcandle at grade
Under-canopy max
42 footcandles
Photometric plan reach
10 ft beyond lot lines
Parking lot minimum
1.0 footcandle

Summary

Kirkwood caps light spilling off a lot at 0.5 footcandle at finished grade generally, and drops that limit to 0.1 footcandle where the light lands on adjoining single-family residential property, under § 25-52(e)(2).

Maximum illumination levels.

(i) The maximum level of light cast off site shall be less than or equal to 0.5 footcandle at finished grade unless otherwise specified herein.

(ii) The maximum illumination level of light cast off site onto properties with single-family residential uses shall be less than or equal to 0.1 footcandle at finished grade.

Full Breakdown

Section 25-52(e) of the Kirkwood Code of Ordinances sets both minimum and maximum illumination levels to control light trespass between properties. 5 footcandle or less at finished grade unless another standard applies. 1 footcandle or less at finished grade, the strictest trespass limit in the section, reflecting the added protection Kirkwood gives residential neighbors from commercial or multifamily lighting spillover. A separate, higher allowance of up to 42 footcandles applies only directly under canopies, such as gas station canopies, under § 25-52(e)(2)(iii). 0 footcandles for pedestrian routes, refuge areas and sidewalks, so the trespass ceiling operates alongside a floor for on-site safety lighting.

Compliance is verified through the photometric plan required under § 25-52(d)(1), which must show point-by-point footcandle readings extending at least 10 feet beyond all lot lines, and again through the as-built photometric plan required before occupancy under § 25-52(d)(10).

Violations & Fines

The Director of Public Services enforces § 25-52 under § 25-99, and property owners may appeal an enforcement decision to the Board of Adjustment under § 25-25. Exceeding the off-site illumination limits is a Code violation subject to § 25-100(b): a fine of $10 to $250 per day for a first offense, or up to 10 days' imprisonment, or both, and $100 to $500 per day for a repeat violation at the same location, with each day treated as a separate offense under § 25-101.

Frequently Asked Questions

How much light can a Kirkwood business legally cast onto my property?
Section 25-52(e)(2)(i) caps light cast off any site at 0.5 footcandle or less at finished grade generally, but § 25-52(e)(2)(ii) lowers that to 0.1 footcandle or less where the light falls on property used for single-family residential purposes.
Does Kirkwood require proof that a lighting plan meets the trespass limits?
Yes. Section 25-52(d)(1) requires a signed and sealed photometric plan showing point-by-point footcandle readings extending at least 10 feet beyond all lot lines before approval, and an as-built version before an occupancy permit issues under § 25-52(d)(10).
Is there an exception to the light trespass cap for canopy lighting?
Yes. Section 25-52(e)(2)(iii) allows up to 42 footcandles directly under canopies, such as gas station canopies, which is far higher than the 0.5 or 0.1 footcandle limits that apply once light crosses a lot line.

Sources & Official References

Other rules in Kirkwood

All Kirkwood rules

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