Determine whether a San Francisco building project falls under Planning Code Section 139 bird-safe glazing standards and what glazing treatment satisfies it.

Steps

1. Pull San Francisco Planning Code Section 139 'Standards for Bird-Safe Buildings' via the official amlegal.com code library mirror or sfplanning.org
2. Identify which of the two hazard types applies: location-related hazard (site within 300 feet of an Urban Bird Refuge) or feature-related hazard (free-standing glass walls, wind barriers, skywalks, balconies, or rooftop greenhouses with unbroken glazed segments 24 sq ft or larger)
3. Confirm applicability triggers: new construction, an addition that creates a bird hazard, or replacement of 50% or more of the glazing on an existing bird-hazard condition
4. Review acceptable Bird-Safe Glazing Treatments: fritting, netting, permanent stencils, frosted glass, exterior screens, physical grids, or UV patterns visible to birds, meeting the pattern-density spec (vertical elements ≥1/4 in. wide at ≤4 in. spacing, or horizontal elements ≥1/8 in. wide at ≤2 in. spacing)
5. Consult sfplanning.org's published Design Guide for Standards for Bird-Safe Buildings for illustrated compliance examples before finalizing a glazing product selection