Castle Rock's Outdoor Lighting: The Rules That Matter

Every city handles outdoor lighting a little differently. In Castle Rock, Colorado, there are 2 distinct rules that residents and property owners should be aware of. Some are stricter than what neighboring cities enforce, and others are more relaxed. Here is what you need to know.

Dark Sky Rules

Castle Rock is not a formal certified Dark Sky community, but Chapter 17.58 of the Zoning Code (Illumination) regulates outdoor lighting. Fixtures generally must be shielded and directed to limit glare and light spilling onto neighboring properties. There is no county-level rule; the Town regulates lighting inside town limits.

Key details: Certified Dark Sky town: No. Lighting code: Chapter 17.58 (Illumination). Shielding: Required to limit glare. Sign lighting: Ch. 19-04-054. Regulator: Town (not county).

Lighting that violates the illumination standards can be cited as a zoning violation, with orders to shield, redirect, or reduce the fixture.

Light Trespass

Castle Rock's zoning Illumination standards (Chapter 17.58) require outdoor lighting to be shielded and directed so it does not cast glare or spill light onto adjacent properties or public streets. Excessive light onto a neighbor can be addressed as a zoning-code and nuisance matter through Town Code Compliance.

Key details: Governing code: Chapter 17.58 (Illumination). Requirement: Shield / direct lighting. Goal: No glare or trespass. Also: Nuisance provisions. Report to: Town Code Compliance.

A fixture causing glare or trespass in violation of Chapter 17.58 can prompt a correction notice requiring shielding or redirection; unresolved cases escalate through Code Compliance.

The Bottom Line

Castle Rock's outdoor lighting rules are a mixed bag. Some areas are strict, others are relaxed, and the details matter. The best approach is to check the specific rule that applies to your situation rather than assuming Castle Rock is broadly strict or permissive.

This guide is based on Castle Rock's current municipal code. Local rules can and do change, so check the individual ordinance pages for the latest details, penalties, and FAQs.