Arboricultural Consulting

This is one of the most common consulting requests we handle. A homeowner or contractor plans to build, renovate, add a pool, replace a driveway, or run a new sewer line, and there are trees on or near the construction footprint. Most municipalities in Pinellas County require an arborist report and a tree preservation plan before they will issue a permit. Tampa and Hillsborough County are equally strict, often requiring detailed preservation documentation before any land disturbance begins.

The preservation plan is not just a checkbox on a permit application. It is a document that specifies exactly which trees can be preserved, which need to be removed, and what protection measures the contractor must follow during construction. This includes tree barricade specifications, root pruning locations and depths, utility tunneling requirements, grade change restrictions, and irrigation protocols for preserved trees during and after construction.

We have produced preservation plans for residential new construction, lot splits, additions, pool installations, and commercial development across Clearwater, Dunedin, Safety Harbor, Tarpon Springs, Tampa, and throughout Pinellas and Hillsborough counties. Each municipality has different requirements. Dunedin, for example, distinguishes between standard tree barricades and grand tree barricades (6-foot chain link fencing for trees above a certain diameter). Clearwater requires a barricade inspection by the Land Resource Specialist before construction begins. Tampa’s Chapter 27 tree ordinance has its own set of documentation and mitigation requirements. We know these local requirements because we have worked with these review boards for years.

A typical construction preservation project starts with a site visit, tree inventory, and review of the submitted plans. We record GPS coordinates, species, diameter, condition ratings, and removal or preservation recommendations for every tree on site above the municipal threshold (usually 4 or 5 inches in diameter). The deliverable is a standard report with a site map, tree inventory table, preservation specifications, and attachments showing barricade and root pruning details per the municipality’s standards.

Tree appraisals establish the monetary value of a tree. There are several situations where this comes up, but the most common in Tampa Bay involves property line disputes during development.

Here is how it usually works. A property owner wants to develop their lot. A neighbor has a tree growing on or near the property line. The proposed construction will damage roots in the critical root zone, creating a risk that destabilizes the tree. Local ordinance requires the tree to be removed because of this risk, but the tree owner has to sign off on the removal. They often want compensation, which is reasonable. An appraisal establishes what the tree is worth so both parties have a starting point for negotiation.

We use the trunk formula technique, which is the most widely accepted method for residential tree appraisal. The process evaluates the tree’s cross-sectional area, condition rating (weighted across health, structure, and form), functional limitations, and external limitations. These factors are applied to the basic reproduction cost of replacing the tree with the largest commercially available specimen of the same or similar species.

Appraisal values can be significant. A recent laurel oak appraisal we performed came in at approximately $14,000 using the depreciated replacement cost method. The matter ultimately settled at $42,000. The appraisal provides a defensible starting point, but negotiation between parties, especially when litigation is involved, can push the final number in either direction.

Tree appraisals require the ASCA Tree and Plant Appraisal Qualification (TPAQ). Not every arborist holds this credential, and appraisals produced without it may not be accepted in legal proceedings.

An arborist report is a written assessment of one or more trees prepared by a credentialed arborist. Reports can address tree health, structural condition, risk level, pruning recommendations, disease diagnosis, or a combination of these.

We produce arborist reports for homeowners, HOA boards, commercial property managers, attorneys, insurance adjusters, and municipalities. Common situations include a tree that has been damaged by a neighbor’s contractor, a tree showing signs of decline that needs a professional diagnosis, or a tree that a homeowner wants to remove but the city requires an arborist’s written recommendation before issuing a permit.

For advanced diagnostics, we use tools like the Resistograph, which drills a micro-bore probe into the wood and produces a graph showing density changes. This reveals internal decay, cavities, and shell wall thickness that cannot be detected by visual inspection alone. Resistograph data provides measurable evidence for decisions about structural pruning, cabling, or removal, and it holds weight in both municipal review and legal settings.

We also perform soil testing, leaf tissue analysis, and pathology work when the question is about tree health rather than tree structure. These diagnostic tools help identify nutrient deficiencies, pH imbalances, root zone compaction, and specific disease organisms. The results inform plant health care treatment plans that address the actual problem rather than guessing.

A tree inventory is a systematic catalog of every tree on a property above a specified diameter threshold. Each tree is recorded with its species, diameter at breast height (DBH), GPS coordinates, crown spread, condition rating, and recommendations.

We produce inventories for residential lots, multi-lot developments, HOA common areas, commercial properties, municipal parks, and golf courses. Our inventories have included as few as 1 or 2 trees on a single residential lot and as many as several thousand across a multi-property commercial site.

Inventories serve multiple purposes. For developers, they are required for permitting. For property managers, they provide a baseline record that tracks the health and maintenance needs of every tree on site. For municipalities, they support urban canopy management and code compliance enforcement.

When tree-related disputes reach litigation, the parties need an expert witness who can explain arboricultural concepts to a judge, jury, or mediator in plain language and defend their conclusions under cross-examination.

Apollo O’Neil has provided expert witness testimony and litigation support on matters involving tree damage disputes, property line tree conflicts, construction damage to protected trees, eminent domain takings that include tree canopy, and failure analysis after tree or limb failures have caused property damage or personal injury.

Expert witness engagement begins with a review of the facts, an independent site inspection, and the preparation of a written report. If the matter proceeds to deposition or trial, testimony is provided at the hourly rate listed below. We approach every engagement the same way: our conclusions follow the evidence, regardless of which side retained us.

Some properties have many or large, mature trees that represent significant value but require ongoing management to stay healthy and safe. A long-term tree care plan provides a multi-year roadmap that covers pruning cycles, plant health care treatments, soil management, monitoring schedules, and risk re-assessment intervals.

These plans are most common for commercial properties, HOA communities, municipal properties, and residential estates with heritage or specimen trees. The plan document serves as a reference for the property manager and a scope of work guide for the tree care company performing the maintenance.