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Palo Alto council sends dark‑sky lighting ordinance back to staff after hours of debate and public comment
Summary
After hours of testimony from residents, environmental groups and planners, the City Council voted unanimously on April 7 to send the proposed dark‑sky lighting ordinance back to staff for revisions addressing applicability to existing lighting, stricter trespass thresholds, curfew timing and compliance mechanisms.
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PALO ALTO, Calif. — The Palo Alto City Council voted unanimously April 7 to send a proposed update to the city’s outdoor lighting regulations — commonly called a dark‑sky ordinance — back to staff for revisions after several hours of questions, debate and public comment.
The draft ordinance, presented by planning staff, applies the city’s dark‑sky principles to new lighting installed for new construction, major renovations or fixtures that require a building permit. Staff described changes that would require shielding, warmer‑color lights and a nightly curfew, while retaining an existing 0.5 foot‑candle limit for light trespass at property lines rather than the 0.1 threshold recommended by the Planning and Transportation Commission (PTC). Kelly Cha, planner, said the draft “balances the diverse and often competing comments we’ve received” and recommended applying the new rules to new lighting only to reduce enforcement and cost burdens.
Council members and dozens of public speakers pressed for broader coverage and firmer standards. Residents and environmental organizations urged the council to apply the rules to existing fixtures, adopt lower light‑trespass limits and protect sensitive areas such as the Baylands and stream corridors. Sherry Liskart, a resident, said outdoor holiday‑style and investor‑installed LED displays are altering neighborhood character and harming insects and wildlife: “I think we can have safe, warm, welcoming streets at night in our neighborhoods without looking like this.” The Sierra Club and Santa Clara Valley Bird Alliance asked for a 0.1 foot‑candle trespass limit and for curfew language to apply to existing as well as new lighting.
Other public commenters — including speakers representing the Edgewood Neighborhood Alliance — raised safety concerns about restricting security lighting in areas that have experienced encampments and crime, saying motion sensors alone may not be adequate for determent. In response, council members asked staff to return with compliance tools and exemptions that would address safety concerns and financial hardship.
After extended discussion, Council Member Stone introduced a motion (on the record) to direct staff to return with a revised draft that incorporated key PTC recommendations and community concerns, including broader applicability (including replacement fixtures), stronger trespass standards in sensitive areas, clearer seasonal and holiday exemptions, a citywide curfew recommendation (the council asked staff to evaluate later curfew hours such as 11 p.m. or midnight), an exception process for documented high‑security areas, and compliance mechanisms that favor education and self‑certification where feasible. The motion called for a phased approach that would give property owners time to achieve compliance and for additional targeted community outreach. The council approved the motion unanimously and directed staff to prepare the next draft for future council consideration.
Staff had earlier noted enforcement capacity is a constraint: code enforcement currently handles many city priorities, and stricter thresholds could increase complaint volume. Several council members said they nonetheless wanted the revised ordinance to reduce light pollution while allowing reasonable exceptions for safety and operational needs, and to include outreach and phased implementation to reduce hardship for residents and small businesses.
The council also asked staff to preserve existing municipal protections for riparian corridors while the city continues work on a separate creek/stream protection ordinance, and to review exemptions for airport and publicly operated facilities to ensure they are narrowly tailored and limited to FAA‑required lighting.
Council direction was procedural rather than final rulemaking; the item will return to staff and then to the council for another hearing and possible adoption. Staff indicated it will prepare outreach materials and a revised ordinance for future consideration.
Votes and next steps: The motion to send the draft back to staff for revisions carried unanimously (7–0). Staff will prepare a revised draft ordinance and outreach plan for future council consideration.

