Grand Prairie, TX Outdoor Lighting: Dark Sky Rules (2026)
Key Facts
- Fixture type required
- Down-light, indirect, diffused or shielded
- Bare bulb limit
- Over 15 watts prohibited
- Strings of lights
- Prohibited except as temporary display
- Temporary display cap
- 45 days per year
- Governing section
- UDC Sec. 10.15.5
Summary
Grand Prairie's Unified Development Code requires outdoor light fixtures to be down-light, indirect, diffused or shielded so they don't spill glare onto neighboring property and streets. Section 10.15.5 bans bare bulbs over 15 watts and strings of lights outright, allowing them only as temporary displays capped at 45 days a year.
Light sources shall be of a down-light type, indirect, diffused, or shielded type luminaries and/or so installed and maintained as to reduce glare effect and consequent interference with use of adjacent properties and boundary streets. Bare bulbs above 15 watts and strings of lamps are prohibited, except for temporary lighting not exceeding forty-five (45) days per year.
Full Breakdown
5, part of Article 10's Glare and Lighting Standards, requires that light sources be of a down-light type, indirect, diffused, or shielded type luminaries, and/or so installed and maintained as to reduce glare effect and interference with adjacent properties and boundary streets. The section then draws a bright line for decorative and unshielded fixtures: bare bulbs rated above 15 watts and strings of lamps are prohibited outright, with a single carve-out for temporary lighting that runs no more than 45 days in a calendar year, covering seasonal or event displays without permitting them as a permanent feature.
4's minimum parking-lot intensity standard, an average of at least two foot candles initial and one foot candle maintained on the pavement surface, so a site has to satisfy both a floor and a ceiling: enough light to meet the parking-area minimum without exceeding the glare limits at the property line, using fixtures that are the down-light or shielded types this section requires. Compliance is reviewed as part of the site's lighting plan during development review, and the Building Official's staff can require a fixture swap, added shielding, or relocation of poles before a Certificate of Occupancy issues if installed lighting does not match the approved plan or produces disallowed glare.
Violations & Fines
Installing bare bulbs over 15 watts, running strings of lamps as permanent lighting, or using fixtures that are not down-light, shielded or diffused violates Section 10.15.5; the temporary-lighting exception only protects displays run for 45 days or less per year. Non-compliant sites can be held up at Certificate of Occupancy review and ordered to replace or reshield fixtures before occupancy is granted.
Frequently Asked Questions
Are string lights allowed on my property in Grand Prairie?
What kind of outdoor light fixtures does the city require?
Is this a dark-sky ordinance for astronomy, or a nuisance-glare rule?
Sources & Official References
Other rules in Grand Prairie
Texas rules heatmap·Compare Grand Prairie to another location·View the Texas outdoor lighting overview
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