Arborist Report Pasadena

An arborist report in Pasadena is a certified arborist's written evaluation of a tree, and it costs $150 to $450 for a standard single tree in 2026. In Pasadena it can pay for itself: the City's private tree removal checklist says a report and evaluation form by a certified arborist halves the single-family permit fee, which was $1,098 for 1 to 3 trees in FY2026.

What an arborist report is used for in Pasadena

An arborist report in Pasadena is used to support a tree decision the City or an insurer will rely on. Three uses come up most:

A private tree removal permit: the report documents why one of the six findings applies, for example that the tree is not reasonably likely to survive, and the City's checklist halves the single-family fee when one is included
A hazard decision: a risk report rates how likely a tree or limb is to fail and what it would hit, which helps decide between pruning, monitoring and removal
A construction project: tree protection plans for work near protected trees, which Pasadena reviews for a fee ($1,041 in FY2026)

Pasadena's own code leans on the International Society of Arboriculture throughout: pruning is defined by ISA standards, landmark pruning must follow them, and penalties for illegal removal use the ISA Guide for Plant Appraisal to set a tree's value. See the Pasadena tree removal permit guide for the full process.

Thick white and gray trunk of a mature sycamore in a park — The trunk of a mature sycamore.

What an arborist report contains

A useful report reads like a short inspection record. Neighborcutmytree.com's 2026 guide lists the usual contents:

Species, trunk size, height, age class and location on the lot
Health and structural condition
Defects: decay, cracks, lean, deadwood
Pest, disease or damage signs (for example shot hole borer entry holes)
A risk or hazard rating
Recommendations: pruning, treatment, preservation or removal
Photos, a site plan and the arborist's credentials

Arborist report cost

Arborist report prices, 2026

Report	Price
Basic inspection or short letter	$75 to $250
Standard single-tree report	$150 to $450
Detailed hazard or risk report	$300 to $550
Multi-tree or development report	$450 to $700+
Consulting arborist, hourly	$75 to $250

Swipe the table sideways to see every column →

neighborcutmytree.com, arborist report cost (July 3, 2026). Cities and insurers generally treat a report as current for 6 to 12 months. Quotes vary.

Certified arborist vs. licensed tree contractor

They are different credentials. California has no state arborist license; ISA Certified Arborist is a voluntary credential that shows training in tree biology, pruning and risk. The license California requires for paid tree work is from the Contractors State License Board: the C-49 Tree and Palm classification, which covers planting, maintaining and removing trees and palms, pruning, stump grinding and guying. Many tree companies have both an ISA arborist and a C-49 license; some have one or the other. For a permit report, ask for an ISA Certified Arborist; for the removal, check the CSLB license.

Coast live oak with a leaning trunk on a dry summer hillside — A coast live oak on a dry summer hillside.

For the trees themselves, see oak tree removal, hazard tree removal, the protected tree list, the shot hole borer guide and tree removal in Pasadena. In Altadena, the County Forester can assess a hazard oak at no cost; see tree removal in Altadena.

Last reviewed October 2026.

Arborist Reports in Pasadena: Questions

Worker on a ladder pruning a spreading oak, a chainsaw on the grass in front

Pruning low limbs on a spreading oak from a ladder.

How much does an arborist report cost?

A standard single-tree report runs $150 to $450, a detailed hazard or risk report $300 to $550, and a multi-tree or development report $450 to $700 or more, per neighborcutmytree.com's July 2026 pricing; consulting arborists bill $75 to $250 an hour. A basic inspection letter is $75 to $250.

Do I need an arborist report for a Pasadena tree permit?

It's optional for a private tree removal permit, but the City's checklist says that if a report and tree evaluation form are completed by a certified arborist, the permit fee for single-family uses is cut in half. On a $1,098 permit that's worth more than most reports cost. Confirm with Planning that the half-fee rule still applies.

What's in an arborist report?

Typically the tree's species, size, age class and location; its health and structure; defects such as decay, cracks, lean or deadwood; pest or disease signs; a risk rating; recommendations for pruning, treatment, preservation or removal; and photos, a site plan and the arborist's credentials.

Is a certified arborist licensed in California?

There's no state arborist license in California. ISA Certified Arborist is a voluntary professional credential. Paid tree work itself needs a CSLB license, the C-49 Tree and Palm classification, for jobs of $1,000 or more.

How long is an arborist report good for?

Most reports describe the tree on the day of inspection; cities and insurers generally treat them as current for 6 to 12 months, per the same 2026 pricing guide. A report for a permit should be recent.

Where do I find a certified arborist?

The International Society of Arboriculture runs a public Find an Arborist search; Los Angeles County points residents to it rather than keeping its own list. Ask any tree company you're getting a removal quote from whether an ISA Certified Arborist will evaluate the tree.

Permit to remove 1 protected tree, FY2026	$1,098
Same permit at half fee with an arborist report	About $549
Standard single-tree report	$150 to $450
Net saving	About $99 to $399