Tree work is the single most dangerous residential trade. The Bureau of Labor Statistics tracks tree workers as having one of the highest fatality rates of any occupation — roughly 100 per 100,000 workers per year, more than 20 times the average for all occupations. Falling from a tree, chainsaw injuries, being struck by falling limbs, and electrocution from power lines are the primary killers. This is not rhetorical. When you hire someone to cut down or significantly prune a tree, you are hiring someone to do a job that kills real people every year. The vetting stakes are not comparable to lower-risk trades.
This guide is part of the Know Before You Hire series. At Home Services Co, our tree service runs on certified arborists, documented insurance, and specific safety practices detailed below. For emergency tree-on-house situations see the dedicated tree on house guide.
Insurance verification is the single most important vetting step. Unlike most trades where insurance is protection against property damage, tree service insurance is also life-and-death protection for you — because if the tree service has no workers' comp and their climber dies on your property, your homeowner's insurance may not cover it, and your personal assets are exposed. Call the insurance carrier directly and verify the policy is active. Do not accept a COI that the contractor hands you — a significant portion of COIs in this industry are fraudulent. The 5-minute phone call to the insurance carrier is the most important call you make in the tree-hiring process. See how to verify insurance.
Specifically: workers' compensation insurance covering every worker on the crew, general liability with a minimum $1M limit (preferably higher), and — if applicable — commercial auto for the chipper truck and bucket truck. An underinsured or uninsured tree company is the highest-liability vendor you will ever hire.
ISA Certification. The International Society of Arboriculture (ISA) certifies arborists through a professional exam and continuing-education requirements. A Certified Arborist is the professional credential that distinguishes a tree expert from someone with a chainsaw and a truck. Ask whether the company employs certified arborists. Large trees, tree health diagnoses, and pruning decisions benefit dramatically from certified expertise. Ask the certification number — it is lookupable in the ISA directory.
Line-clearance arborist. For any tree work near power lines, the credential required is Line-Clearance Arborist — a specific OSHA-compliant certification distinct from general arborist work. A regular tree crew working near energized lines is a fatality waiting to happen. If your tree is near the power line, ask specifically: is your crew line-clearance certified, and if not, how will you coordinate with the utility? The honest answer on residential lines that your tree is touching is often 'call the utility to do it' — they handle vegetation near their lines for free in many service territories.
Red flag #1: the door-to-door 'we saw your tree' pitch. After every storm, tree crews roll through neighborhoods offering discounted removal. Almost all of them are uninsured, unlicensed, and unqualified. After storms they take deposits, do partial work, and disappear. If someone knocks on your door offering tree service, close the door. Find a legitimate local crew by referral or by calling an established business. See the just-in-the-neighborhood scam and storm chasers.
Red flag #2: pricing dramatically below market. Tree removal of a mature tree is genuinely expensive — hundreds to thousands of dollars depending on size, location, access, and risk. A 50-foot oak in a tight lot with power lines nearby is not a $300 job, regardless of what the door-to-door pitch says. If the quote is dramatically below what three established companies would charge, the operator is either cutting corners on insurance and safety (most common) or planning to leave mid-job to extract more money (also common). See why cheapest costs more.
Red flag #3: no rigging plan for large trees. Large tree removal requires rigging — ropes, pulleys, and techniques to lower limbs and sections controlled rather than letting them fall. A crew that plans to drop limbs freely onto your yard is a crew planning to damage something (turf, fence, car, roof, power line). Ask how they will rig the tree. A real arborist has a clear answer. An amateur does not.
Red flag #4: spikes on pruning work. Climbing spikes are for removals only. A climber who uses spikes on a tree that is being pruned is damaging the tree — every spike hole is a wound. ISA best practice is no spikes on any tree that will be left standing. An arborist who uses spikes for pruning work is signaling they do not follow industry standards.
Red flag #5: 'topping' as a recommendation. Topping a tree — cutting the top off to reduce height — is a practice the arboricultural industry has universally condemned for decades. Topping causes decay, structural weakness, and ugly regrowth. A legitimate arborist will never recommend topping. A real practitioner will recommend crown reduction (selective removal of limbs to reduce size while maintaining structure) instead. An 'arborist' who proposes topping is not actually practicing arboriculture.
Red flag #6: no written scope. Tree work scope should be written: which trees, what work on each (removal, pruning, pruning to what spec, stump grinding), cleanup included or not, haul-away or leave on site, any rigging specifics, any permits if required. 'We'll take care of the trees' without written scope is a recipe for scope creep or scope reduction.
Permits and protected species. Some jurisdictions require permits for removal of trees above a certain size, especially on protected species (live oaks in some regions, ash trees in emerald-ash-borer areas, various protected natives). HOAs often have tree removal rules. Before scheduling tree removal, verify permit requirements with your municipality and HOA. A legitimate arborist knows the local rules and will tell you. An amateur will cut first and leave you to face the fine.
Tree health diagnoses. When a tree looks bad, the question is often whether to treat it or remove it. A certified arborist can diagnose specific issues — insect damage, fungal diseases, root problems, construction stress, drought impact — and recommend appropriate treatments. A tree-removal company without arborist expertise will recommend removal because removal is what they sell. Getting a genuine health assessment from a consulting arborist (who does not also do removals) is sometimes worth the $100-$300 fee before committing to removal of a mature tree.
Pruning best practices. Pruning is not 'trimming.' Proper pruning removes specific branches for specific reasons: clearance, structure, health, or view. Random trimming or 'lion's-tailing' (removing all the interior foliage to leave just tufts at the ends) damages tree structure. The 25% rule: no more than 25% of a tree's live canopy should be removed in a single season. Crews that 'really cut it back' beyond that are causing long-term harm the homeowner will not see until the tree declines in future years.
Pricing reality. Small tree removal (under 20 ft, clear access, no complications): $200-$600. Medium tree removal (20-50 ft, some access challenges): $500-$1,500. Large tree removal (50+ ft, tight access or hazards): $1,500-$4,500. Very large or technically difficult removal (near power lines, over structures, crane required): $3,000-$10,000+. Pruning a mature tree: $300-$1,500 depending on size and complexity. Stump grinding: $100-$400 depending on stump size. Emergency storm work: 1.5x-2x normal rates given crew availability and after-hours scheduling. Anything dramatically below these ranges is a red flag. Multiple quotes from established, insured, certified companies will reveal the real market range in your area.
Cleanup and debris. The contract should specify what happens to the debris. Haul away: everything leaves the property, additional cost but cleanest outcome. Chip in place: chips stay for you to spread as mulch (good for gardens, bad if you have no use for mulch). Cut into firewood rounds and stacked: works if you burn wood. Left on site: usually not what homeowners want but sometimes the cheapest option. Specify in writing before the job starts.
Post-job inspection. Walk the property after the crew leaves. Check for lawn damage from equipment. Check the fence for damage. Check any beds near the work for trampling. Check that stumps are ground to the agreed depth (typically 6-8 inches below grade, not just flush with the surface). Check the driveway for oil stains from equipment. Any damage should be documented and addressed before final payment. A professional crew does a final walkthrough with you before leaving.
Emergency tree work. Trees on houses, trees blocking driveways, dangerously leaning trees after storms — these are genuine emergencies that warrant same-day or overnight response. Emergency rates are higher for legitimate reasons (after-hours dispatch, crew mobilization, competing demand). But 'emergency' should not be a pretext for unlicensed or uninsured crews who appear door-to-door. The same insurance and certification verification applies to emergency work — do the 5-minute insurance call before authorizing any work, even in an emergency. See emergency home services and tree on your house for specific emergency sequences.
The summary. Tree work is life-safety work. Verify workers' comp by calling the insurance carrier directly. Verify general liability. Look for ISA certification. Require written scope. Reject door-to-door pitches. Reject bids dramatically below market — they always cut corners on insurance or execution. Reject topping recommendations. Get written pricing. Pay after the work is inspected.
At Home Services Co, our tree service operates with certified arborists, documented workers' comp and liability, proper rigging, written scope, and no topping. Related reading: hiring a landscaper, annual roof inspection, fall maintenance checklist, roof leak in a storm, pricing, book a service, or the full series.