Do You Need an Arborist Report Before Cutting Large Tree Roots in Florida?

You may not need a formal arborist report for every small root issue, but you should strongly consider one before cutting large roots near the trunk, foundation, driveway, sidewalk, pool deck, septic area, utility line, or any tree that could hit a structure if it became unstable.

Large roots are not underground clutter. They help anchor the tree, move water, store energy, and support the trunk during heavy rain and wind. Cutting the wrong roots can turn a landscape repair into a tree-risk question.

A casual opinion is not the same as a documented tree-risk assessment.

Why large root cutting is different

A small surface root in a planting bed is one thing. A large structural root near the trunk is another.

A homeowner may see a root lifting a paver and think the problem is only cosmetic. But that same root may be part of the tree’s support system, especially if it is near the root flare or on the side opposite a lean.

Cutting large roots can create several problems:

• the tree may lose anchoring strength,
• decay can start at the cut and move inward,
• water and nutrient movement can be reduced,
• the canopy may decline months later,
• the tree may become less predictable in storms.

For root-risk context, see root pruning vs root damage and what to do if a contractor cuts tree roots near your Florida home.

When a report is more useful

A written arborist report can be helpful when the root work is connected to property decisions, contractor decisions, HOA questions, insurance documentation, permits, buyer concerns, or disputes over who caused damage.

It may also be useful when:

Situation	Why documentation helps
Roots are near a structure	The consequence of failure is higher.
A contractor wants to trench	The route may need to change.
A driveway or patio is lifting	Cutting may create a stability issue.
Septic or utility work is planned	Private lines and tree roots may overlap.
Storm season is near	Root loss can matter more in wind and saturated soil.
The tree is large or leaning	Risk decisions need more than a quick opinion.

The report should explain what was observed, why the roots matter, and what options are reasonable.

What the report should cover

A useful report should be specific to the tree and site.

It may address:

• tree species and approximate size,
• location of roots being cut,
• distance from trunk,
• root size and number,
• visible decay or defects,
• lean and canopy weight,
• nearby targets,
• soil or drainage conditions,
• whether cutting is avoidable,
• whether monitoring, pruning, or tree removal services should be considered.

The report should not simply say “roots can be cut” without explaining what risk remains.

When cutting roots is not the right first step

Root cutting may be the wrong first step when:

• large roots are close to the trunk,
• several roots would be cut on one side,
• the tree already leans,
• soil cracks are visible,
• the tree has conks, cavities, or trunk cracks,
• the tree can hit a home, driveway, road, fence, or pool cage,
• the work is happening before storm season.

If the tree is already moving, leaning, or threatening a target, emergency response services may be appropriate after power-line hazards are addressed.

Could trimming help instead?

Sometimes homeowners ask whether tree trimming services can reduce stress after root work. Selective pruning may help in limited cases, such as removing deadwood or a specific overextended limb.

Heavy canopy reduction is not a cure for major root loss. The main question is whether the tree remains stable enough to keep.

Stump and utility note

If the tree is removed because root cutting would be unsafe, ask whether stump grinding services are included and whether stump work could affect nearby utilities, irrigation, septic components, pavers, or nearby tree roots.

Public utility marking may not identify private lines. Confirm irrigation, drainage, pool, lighting, and septic areas before digging or grinding.

Sources consulted

• UF/IFAS: Is My Tree Safe?
• UF/IFAS: Trees and Hurricanes
• EPA: How to Care for Your Septic System
• Sunshine 811: Homeowner Guidance

An arborist report is not required for every small root issue, but it can be valuable before cutting large roots near important targets. The report should help clarify whether the roots can be pruned, whether the work should change, or whether the tree has become a removal candidate. For help routing a root-cutting question, call ProTreeTrim at (855) 498-2578.