How San Francisco Handles Tree Protection: A Practical Guide
San Francisco maintains 177 local ordinances across all categories, and 2 of those deal specifically with tree protection. Here is a breakdown of what the city actually requires, what is prohibited, and where San Francisco falls on the strict-to-permissive spectrum compared to other cities.
Parkway Planting
New buildings and major additions in San Francisco must plant street trees at set spacing and size standards along the public right-of-way.
Key details: Trigger: New building, unit, curb cut, garage, 500+ sf addition. Tree spacing: 1 tree per 20 ft frontage. Minimum size: 24-inch box, 1 1/4-inch caliper. Waiver option: In-lieu fee or alt. landscaping.
The Director may waive or modify tree requirements only for site constraints like inadequate sidewalk width, requiring the applicant to pay an in-lieu fee or provide alternative landscaping of comparable value instead.
Heritage & Protected Trees
San Francisco lets owners, commissions, or agency directors nominate a tree for landmark status, which the Board of Supervisors grants by ordinance.
Key details: Who can nominate: Owner, commission, or dept. director. Reviewing body: Public Works, then Board of Supervisors. Designation method: Board ordinance. Rejected nomination wait: 3 years before renomination.
Once designated, the tree gains landmark protections under Sec. 810; removing or injuring it without following the special permit process can trigger the ordinance's infraction/misdemeanor charges and administrative penalties.
The Bottom Line
San Francisco's tree protection 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 San Francisco is broadly strict or permissive.
This guide is based on San Francisco's current municipal code. Local rules can and do change, so check the individual ordinance pages for the latest details, penalties, and FAQs.