Which Bay Area city has the harshest tree removal penalties?

Oakland has the highest stated penalty exposure in the Bay Area: city code allows fines of up to $1,000,000 per illegally removed protected oak. Woodside (up to $100,000 per tree), San Jose ($30,000+), and Cupertino ($25,000-$40,000+) follow. Saratoga and Sunnyvale assess penalties at three times the appraised tree value.

Which Bay Area city has the strictest protected tree threshold?

Berkeley protects coast live oaks at any size, and Oakland protects oaks from just 4 inches in trunk diameter, the lowest size thresholds in the Bay Area. Mountain View also protects designated heritage species from 4 inches. By contrast, Piedmont requires no permit for most private trees.

How much does tree removal cost in the Bay Area in 2026?

Across the 35 cities surveyed, removing a medium tree (25-50 feet) averages roughly $4,150, ranging from $1,500-$3,000 in San Jose to $5,000-$10,000 in Atherton, a more than 3x spread driven by property access, crane requirements, and local labor costs.

Do I need a permit to remove a tree in the Bay Area?

In most Bay Area cities, yes, if the tree exceeds the city's protected size threshold. Thresholds range from 4 inches trunk diameter (Oakland oaks) to 18 inches (Milpitas, Hillsborough). Check your city's specific ordinance or use the free permit checker at urbanforestryguide.com before removing any tree.

Do I need a permit to remove a tree in the Bay Area?

In most Bay Area cities, yes. Nearly all 35 cities we cover protect trees above a certain trunk diameter — typically 10 to 18 inches depending on the city and species. Some cities like Palo Alto and Oakland protect all trees on private property above a minimum size. Others only protect specific species designated as heritage trees. Always check before cutting.

How do I find out if my tree is protected?

Measure the trunk diameter at 4.5 feet above ground (called breast height). Compare your measurement to your city's protection threshold. Use our Permit Checker tool to look up your city's specific rules, or visit the city's planning department website. When in doubt, call your city's planning or public works department before any work.

What happens if I remove a tree without a permit?

Penalties for unpermitted tree removal vary by city but can be severe. Fines typically range from $1,000 to $25,000 per tree. Some cities like Palo Alto can fine up to three times the appraised value of the tree. You may also be required to plant replacement trees, sometimes at a 3-to-1 or higher ratio, at your own expense.

How long does it take to get a tree removal permit?

Processing times vary from a few days to several months. Simple removals of dead or hazardous trees can sometimes be approved in 1 to 2 weeks. Heritage tree permits may require a public hearing and take 4 to 12 weeks. Plan ahead — do not assume you can start work immediately after applying.

Do I need a permit to prune my tree?

Most cities do not require permits for routine pruning as long as you stay within limits — typically no more than 25 percent of the crown in a single year. However, some cities restrict pruning of heritage or protected trees. Topping (cutting main branches back to stubs) is prohibited in many ordinances and may trigger enforcement action.

What is a heritage tree?

A heritage tree is one that receives extra legal protection under a city's tree ordinance, usually because of its size, species, age, or historical significance. Definitions vary widely between Bay Area cities. Some cities like Los Gatos protect all native oaks regardless of size. Others like Hillsborough define heritage status by trunk diameter alone.

What are common protected tree species in the Bay Area?

Coast live oak is protected in nearly every Bay Area city with a tree ordinance. Other commonly protected species include valley oak, blue oak, California bay laurel, coast redwood, and Monterey cypress. Some cities protect all native species. Others protect any tree above a certain size regardless of species.

Can I remove a dead tree without a permit?

Some cities allow dead tree removal without a permit, while others still require one. Even where a permit is not technically required, it is wise to document the tree's condition — take photos and get a written assessment from an arborist. This protects you if a neighbor or the city later questions whether the tree was actually dead.

Do I need an arborist report for a tree permit?

Many cities require an arborist report from an ISA Certified Arborist as part of the permit application, especially for heritage or protected trees. Reports typically cost $300 to $600 for a single tree. The report assesses the tree's condition, justifies why removal is necessary, and may recommend replacement plantings.

How do Bay Area tree ordinances compare?

Bay Area tree ordinances vary widely. Some cities like Piedmont and Hillsborough have strict protections with low size thresholds. Others like Milpitas have more limited protections. Use our Ordinance Comparison tool to compare up to 35 cities side by side, or read our blog post on the strictest ordinances in the Bay Area.

State of Bay Area Urban Forestry 2026

Key Findings

$1,000,000

Maximum per-tree fine in the region — Oakland's penalty ceiling for illegally removed protected oaks. Redwood City's flat $500 fine is 2,000× lower.

4″ vs 18″

The protection gap: Oakland and Berkeley protect oaks from 4 inches (Berkeley: any size); Milpitas and Hillsborough do not regulate most trees until 18 inches in trunk diameter.

$4,150

Average cost to remove a medium (25–50 ft) tree across the 35 cities — from $1,500–$3,000 in San Jose to $5,000–$10,000 in Atherton, a 3.3× spread.

35 / 35

Cities with some form of tree regulation — but only one (Piedmont) leaves most private trees unregulated. Nearly every Bay Area removal decision touches a permit question.

This report compares how 35 Bay Area cities regulate, protect, and price tree work as of June 2026. The underlying dataset — protected-tree thresholds, penalty structures, permit fees, timelines, and verified cost ranges — was compiled city-by-city from municipal codes, planning department guidance, and field experience, and is maintained year-round on this site. Journalists and researchers are welcome to cite this report with attribution (see how to cite below).

Finding 1: A 2,000× Gap in Penalty Exposure

The cost of removing a protected tree without a permit depends almost entirely on which side of a city line the trunk stands. Oakland's municipal code allows penalties of up to $1,000,000 for an illegally removed protected oak — the region's highest ceiling. Woodside exposes homeowners to fines of up to $100,000 per tree, San Jose to $30,000 or more, and Cupertino to $25,000–$40,000, where unpermitted removal is also a misdemeanor. Saratoga and Sunnyvale tie penalties to three times the appraised value of the tree — for a mature heritage oak, easily a six-figure exposure.

At the other end, Redwood City fines a flat $500 per tree plus replanting requirements. The practical takeaway for homeowners: a penalty in one city can exceed the price of the house next door's entire tree inventory. Estimate your own exposure with the Penalty Calculator.

Finding 2: The Same Oak Is Protected in One City, Unregulated in the Next

Protection thresholds vary so much that an identical coast live oak can be fully protected, partially protected, or unregulated within a five-mile radius. Berkeley protects coast live oaks at any size and Oakland from 4 inches in trunk diameter, while Milpitas and Hillsborough leave most species unregulated until 18 inches. Piedmont — bordering Oakland on every side — requires no permit for most private trees at all. Species rules add another layer: several cities protect only natives (oaks, redwoods, bay laurel, madrone), and some, like Belmont, explicitly exclude eucalyptus, Monterey pine, and acacia.

Compare any two cities side-by-side with the Ordinance Comparison tool, or check a specific tree with the Permit Checker.

Finding 3: Where You Live Changes the Price More Than Tree Size

Across the 35 cities, removing a medium tree (25–50 feet) averages roughly $4,150, but the range is wide: $1,500–$3,000 in San Jose and Milpitas against $5,000–$10,000 in Atherton and $4,500–$8,500 in Hillsborough. Three factors drive the spread: estate-property access and crane requirements, heritage-tree paperwork (arborist reports, replacement plantings, bonds), and local labor and disposal costs. In several cities, the permitting process — not the cut — is the long pole: heritage permits can take 4–12 weeks with public notice requirements.

City-specific estimates for six service types are available in the Cost Estimator.

The Data: All 35 Cities by Region

Thresholds and penalties are summarized from each city's municipal code and planning guidance; full details, code references, and permit steps are on each city's permit guide. Removal costs are 2026 ranges for a typical 25–50 ft tree with normal access.

Peninsula (San Mateo County)

City	Protected Tree Size	Penalty Exposure	Typical Removal (25–50 ft tree)
Atherton	11.5″–18″ trunk diameter	$10,000+ per tree	$5,000–$10,000
Belmont	Oaks & Redwoods: 10" trunk diameter \| Others: 24"	Per city fee schedule	$3,000–$5,500
Burlingame	See permit guide	Per city fee schedule	$2,500–$4,500
Foster City	See permit guide	Per city fee schedule	$2,500–$4,500
Hillsborough	18″ diameter (50″ circumference)	$150/inch + appraised value	$4,500–$8,500
Menlo Park	See permit guide	Per city fee schedule	$3,200–$6,000
Palo Alto	11.5″–18″ trunk diameter	$10,000+ per tree	$3,000–$5,000
Redwood City	12" trunk diameter (6–36" measure)	$500 per tree + replanting	$2,000–$4,500
San Carlos	See permit guide	Per city fee schedule	$3,000–$5,500
San Mateo	10″ trunk diameter	Per city fee schedule	$3,000–$5,000
Woodside	24″–36″ circumference	Up to $100,000 per tree	$4,000–$8,000

South Bay (Santa Clara County)

City	Protected Tree Size	Penalty Exposure	Typical Removal (25–50 ft tree)
Campbell	18" circ. (~6" diameter)	Per city fee schedule	$2,500–$5,000
Cupertino	12″ diameter	$25,000–$40,000+	$3,000–$5,500
Los Altos	12 inches trunk diameter (10 for native)	Per city fee schedule	$2,200–$4,500
Los Gatos	12" trunk diameter — Oaks, Standard in Flatland	Per city fee schedule	$3,500–$6,000
Milpitas	56" circumference (18" trunk diameter)	Per city fee schedule	$1,500–$3,500
Mountain View	4″ trunk diameter (species-specific)	$10,000+ per tree	$2,800–$5,000
San Jose	38″ circumference	$30,000+ per tree	$1,500–$3,000
Santa Clara	See permit guide	Per city fee schedule	$1,800-$4,000
Saratoga	10″–18″ trunk diameter	3x appraised value	$3,200–$6,000
Sunnyvale	See permit guide	Per city fee schedule	$2,000–$4,500

East Bay (Alameda County)

City	Protected Tree Size	Penalty Exposure	Typical Removal (25–50 ft tree)
Berkeley	Coast Live Oak: Any size \| Other: 6" trunk diameter	Per city fee schedule	$3,500–$6,500
Fremont	Native trees: 10" trunk diameter \| Vacant lots: 6"	Per city fee schedule	$3,000–$5,500
Hayward	8" caliper (commercial & front yards)	Per city fee schedule	$2,800–$5,500
Oakland	4″ trunk diameter (oaks) — strictest Bay Area	Up to $1,000,000 per tree	$2,000–$5,000
Piedmont	See permit guide	Per city fee schedule	$2,200–$3,800

Contra Costa County

City	Protected Tree Size	Penalty Exposure	Typical Removal (25–50 ft tree)
Danville	10″ trunk diameter (natives), 36″ heritage	Per city fee schedule	$2,500–$6,000
Lafayette	12″ trunk diameter (indigenous species)	Per city fee schedule	$2,200–$5,500
Orinda	12" trunk diameter (oaks on developed parcels)	Per city fee schedule	$4,500–$8,000
Pleasant Hill	9" diameter (native oaks & native trees)	Per city fee schedule	$1,800–$4,500
Walnut Creek	9″ trunk diameter (all species)	Per city fee schedule	$1,800–$4,500

Marin County

City	Protected Tree Size	Penalty Exposure	Typical Removal (25–50 ft tree)
Mill Valley	See permit guide	$15,000+ per tree	Varies
San Rafael	See permit guide	Per city fee schedule	$3,000–$5,000
Tiburon	60″ circumference	Per city fee schedule	Varies

San Francisco

City	Protected Tree Size	Penalty Exposure	Typical Removal (25–50 ft tree)
San Francisco	See permit guide	Per city fee schedule	$4,000–$7,000

Methodology

Data was compiled and verified between March and June 2026 from municipal code libraries, city planning and public works guidance, published fee schedules, and direct agency contact where published materials were ambiguous, then cross-checked against field experience on Bay Area properties. Cost ranges reflect quoted and observed market pricing for licensed, insured operators — unlicensed cash quotes run lower and are excluded. The dataset is maintained continuously; corrections are welcome at michaelgschuck@gmail.com. Full editorial methodology: Editorial Standards.

How to Cite This Report

Schuck, Michael (ISA Certified Arborist WE-15750A). “State of Bay Area Urban Forestry 2026.” Urban Forestry Guide, June 2026. urbanforestryguide.com/state-of-bay-area-urban-forestry-2026/. Free to cite with attribution. Journalists: data tables, city-level detail, and expert comment available on request.