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Pleasanton, CA Outdoor Lighting: Light Trespass & Shielding (2026)

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

Key Facts

Max glare rating
B3 U0 G1 (B.U.G. rating)
Lighting zone standard
CEC Lighting Zone 3
Core requirement
Shielded to prevent light trespass
Applies to
Housing development units / urban lot splits
Governing chapter
PMC Ch. 18.101 (SB 9 implementation)

Summary

Under Pleasanton's SB 9 housing-development and urban-lot-split standards, exterior lighting on a housing development unit must be shielded to prevent light trespass across property lines and meet a maximum B3 U0 G1 glare rating, keyed to California Energy Commission Lighting Zone 3.

U. Housing development units shall comply with the following lighting requirements ... 2. Exterior lighting fixtures shall provide a maximum backlight uplight glare (B.U.G.) rating of B3 U0 G1. 3. All exterior lighting fixtures shall be appropriate for California Energy Commission Lighting Zone 3. 4. Lights shall be shielded to prevent light trespass across property lines, including any property lines that result from a proposed urban lot split.

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: rev 4955754; v17 updated 2026-06-02).

Full Breakdown

) for single-family zones, letting a qualifying lot add a second unit or split into two parcels. ) rating, the fixture locations on the site plan, and mounting heights. The rating itself is capped at B3 U0 G1, the fixtures must be appropriate for California Energy Commission Lighting Zone 3, and, most directly on point, lights must be shielded to prevent light trespass across property lines, expressly including any new property line created by an urban lot split. The same section also folds in privacy screening for upper-story windows within 25 feet of a neighboring primary residence (raised sills, offset glazing, or frosted glass) and caps screening used to hide trash enclosures, HVAC equipment and transformers at 42 inches.

Because this standard sits inside the housing-development chapter rather than the general zoning code, it binds new duplex-style housing development units and lot-split parcels specifically, not every residential property in the city; it does not purport to be Pleasanton's general nuisance-lighting rule for existing single-family homes.

Violations & Fines

A housing development or urban lot split approved under Chapter 18.101 that installs unshielded fixtures exceeding the B3 U0 G1 glare cap, or fixtures that cast light across a property line, is out of compliance with its approved design standards and is enforceable through the zoning administrator's review and appeal process under Chapter 18.144.

Frequently Asked Questions

Does Pleasanton require shielded lighting on a new duplex under SB 9?
Yes. Section 18.101.110 requires exterior lighting on housing development units to be shielded to prevent light trespass across property lines, including any new line created by an urban lot split, as part of the city's SB 9 development standards.
Is there a numeric glare limit for these fixtures?
Yes, a maximum backlight-uplight-glare (B.U.G.) rating of B3 U0 G1, and fixtures must also be appropriate for California Energy Commission Lighting Zone 3, per § 18.101.110.
Does this lighting rule apply to any home in Pleasanton?
No. It applies specifically to housing development units and urban lot splits approved under Chapter 18.101, Pleasanton's implementation of state SB 9 law, not to ordinary single-family lots that are not splitting or adding a second unit.

Sources & Official References

Other rules in Pleasanton

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