Large tree blown over onto a lawn and sidewalk after high winds

Tree Risk Assessment · Statewide

Tree Risk Assessment in Colorado

Tree Risk Assessment in Colorado: a tree risk assessment is an arborist's evaluation of how likely a tree (or part of it) is to fail, what it would hit, and how bad the consequences would be. Locally, snow on leafed-out trees: September–October and April–May storms dump heavy snow while leaves are on, causing widespread breakage.

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Tree problems in Colorado that call for arborist risk assessment

1
Snow on leafed-out trees
September–October and April–May storms dump heavy snow while leaves are on, causing widespread breakage.
2
Downslope wind
Strong winter winds along the foothills snap limbs and topple trees.
3
Drought
Planted trees depend on watering; drought weakens them for years.

What tree risk assessment covers

A tree risk assessment is an arborist's evaluation of how likely a tree (or part of it) is to fail, what it would hit, and how bad the consequences would be.

How tree risk assessment works, step by step

Describe the tree and what it's near, and you'll reach an independent provider serving Colorado.

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Trees in Colorado that most often need arborist risk assessment

Green ash: Common street tree; emerald ash borer risk
Blue spruce and ponderosa pine: Snow load and beetle risk; mountain areas also face wildfire
Silver maple and Siberian elm: Fast-growing, brittle; snow breakage

Timing in Colorado

Sept–Oct: Early snow on leafed trees; shake snow off gently from below
Winter: Good time for pruning and removals; watch for downslope winds
April–May: Late snowstorms on new leaves

Tree rules and permits in Colorado

Denver: a permit from the Office of the City Forester is required before removing, planting or treating a tree in the public right-of-way, and tree work in the city must be done by a Denver-licensed tree service company, which pulls the permit.
Emerald ash borer has been confirmed in Boulder (2013) and many other Front Range communities; local firewood and wood-movement guidance applies.

Sources (checked 2026-10-01)

Rules change and details depend on your exact property. Confirm with the city or county before work starts. This isn't legal advice.

What affects the price of arborist risk assessment in Colorado

The usual drivers are size, access, what's under the tree and cleanup; see the full list for arborist risk assessment.

Tree Risk Assessment in Colorado: common questions

Do I need a permit for tree Risk Assessment in Colorado?

Denver: a permit from the Office of the City Forester is required before removing, planting or treating a tree in the public right-of-way, and tree work in the city must be done by a Denver-licensed tree service company, which pulls the permit. Emerald ash borer has been confirmed in Boulder (2013) and many other Front Range communities; local firewood and wood-movement guidance applies.

Which trees in Colorado most often need arborist risk assessment?

Green ash: common street tree; emerald ash borer risk Blue spruce and ponderosa pine: snow load and beetle risk; mountain areas also face wildfire Silver maple and Siberian elm: fast-growing, brittle; snow breakage

When is the best time for arborist risk assessment in Colorado?

Sept–Oct: Early snow on leafed trees; shake snow off gently from below Winter: Good time for pruning and removals; watch for downslope winds

Snow on leafed-out trees: what does it mean for arborist risk assessment in Colorado?

September–October and April–May storms dump heavy snow while leaves are on, causing widespread breakage.

Downslope wind: what does it mean for arborist risk assessment in Colorado?

Strong winter winds along the foothills snap limbs and topple trees.

Drought: what does it mean for arborist risk assessment in Colorado?

Planted trees depend on watering; drought weakens them for years.

Other tree services in Colorado

Tree Risk Assessment nearby

Tree Risk Assessment in Denver, CO

More about Colorado: tree removal in Colorado · all locations

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