Tree surgeon job costing breaks down when the chip van fills before the crown is down. One ground worker leaves for another disposal run while the rest of the crew waits. The stump grinder comes off the van, but nobody records it because the business owns it.
Tree surgeon job costing catches those costs while the job is still open. Start with the accepted scope. Record every paid hour, machine unit, supplier bill and waste movement against one job reference. Then compare the finished cost with the work you priced.
Set the scope before tree surgeon job costing begins
You cannot cost a note that says “remove tree”. Tie the cost record to the accepted quote, the site and the planned work before the crew loads the van.
Record the client, address, quote reference and trees covered. Describe the cuts, rigging, stump work, access equipment, traffic arrangements, waste destination and finished condition of the site.
State what happens to logs, woodchip and stump arisings. Record whether they leave the site, stay where processed or need moving to a position chosen by the client. Include lawns, paths, gates and roadside access in the finish requirements.
Write the exclusions beside the scope. If the quote excludes stump grinding, restricted-access handling or removal of retained timber, the crew needs to see that before starting.
If the scope needs tightening, use the tree surgeon removal quote guide to record access, rigging, machinery, waste and exclusions. The accepted quote becomes the baseline for cost tracking.
Check tree-work permissions and restrictions before locking the baseline
Check tree-work permissions and restrictions before finalising labour, equipment, waste and programme assumptions. A missed restriction can change the work or stop it.
Use a simple process:
- Record the site and identify the trees covered by the proposed work.
- Name the person responsible for making the checks.
- Ask the local planning authority (opens in a new tab) whether planning controls affect the trees or site.
- Check felling controls with the forestry body for the nation concerned: the Forestry Commission (opens in a new tab) in England, Scottish Forestry (opens in a new tab) in Scotland, Natural Resources Wales (opens in a new tab) in Wales or the Department of Agriculture, Environment and Rural Affairs Forest Service (opens in a new tab) in Northern Ireland.
- Attach the answers and supporting records to the job, then finalise the scope.
Do not guess from what happened at another property. Ask the official bodies responsible for that site and write down the answers.
Choose where job time starts and finishes
Set one boundary for quoted time and actual time. If your estimate starts at depot loading, your actual record must do the same.
The boundary can include loading, travel, site setup, cutting, rigging, chipping, clearing, disposal, return travel and unloading. Include an activity when the job caused paid crew time or equipment use inside your stated method.
Do not record only saw time. The crew is still costing the business while loading rigging gear, waiting for access or unloading woodchip.
Apply the same boundary to equipment. Decide when the chipper, stump grinder, access platform and van start serving the job and when that use ends.
Build an estimated cost baseline before dispatch
The accepted customer price and the estimated internal cost are different figures. Keep them in separate fields.
The price is what you charge for the defined scope. The cost baseline is what you expect the job to consume. Build it from labour, owned equipment, hired plant, subcontractors, waste handling and consumables.
A plain structure works:
| Cost bucket | Estimated basis | Actual record | Evidence |
|---|---|---|---|
| Crew labour | Workers and paid time by phase | Time recorded by each worker | Crew timesheet and site notes |
| Owned equipment | Planned hours or job days | Actual machine units | Machine log |
| Hired plant | Booking cost and job share | Supplier cost assigned to the job | Hire bill |
| Subcontractors | Accepted work package | Final cost for completed work | Supplier bill and work record |
| Waste | Processing, loading, hauling and disposal | Actual movements and charges | Disposal record and crew notes |
| Consumables | Items expected to be used | Stock issued or purchases made | Stock or purchase record |
Keep crew and equipment costs separate unless your cost sheet combines them in one recorded charge. A climber operating a stump grinder creates labour time and machine use. Record both without duplicating either cost.
Decide where payroll costs and overhead sit. You might load some costs into labour or equipment, or hold them in a separate allocation. Do not put the same cost in two buckets.
Compare revenue and costs on a consistent VAT basis. Ask HMRC (opens in a new tab) or your adviser about the tax treatment that applies to your business and subcontractors.
Capture every crew hour caused by the work
Record time by worker and job reference. Do it on the day, not from memory when the invoice is ready.
Use work phases that help you correct the next estimate. Useful phases include:
- depot loading and preparation
- travel to the site
- setup and access preparation
- climbing, cutting and rigging
- ground work and chipping
- stump work
- clearing and pack-down
- hauling and disposal
- return travel and unloading
Do not create a category for every movement. Split time where the result can change a quote.
Restricted side access is a good example. It can increase carrying, rigging and ground-crew time without changing the number of trees. Record the extra hours against the access phase and add a short cause note.
The same rule applies when the chip van fills early. Record the driver’s disposal time and any time the remaining crew spends waiting or changing tasks. Write why the extra run happened: more volume than allowed, a smaller load, a changed waste instruction or a different destination.
Use the worker’s paid labour cost for those hours. Do not use the amount charged to the customer as the labour cost. The selling price contains more than wages.
Check missing time before the crew leaves the site or finishes unloading. Ask what caused each gap. A two-word note such as “gate restricted” or “extra disposal” is more useful than a clean total with no explanation.
Assign owned and hired machinery to the job
Tree surgeon job costing fails when owned machinery is treated as free. The absence of a supplier invoice does not remove the cost of buying, financing, storing, insuring, servicing and repairing a machine.
Set an allocation for owned equipment
Choose a recorded unit for each machine. That might be machine hours or job days. Use the unit you can capture consistently in the field.
Add the machine’s fixed ownership costs from your own figures, then divide that total by the practical machine units you expect to record over the same period. Add the operating cost per unit, using your own fuel, servicing, repair and wear figures. Multiply the combined cost per unit by the units recorded on the job.
The calculation is:
(fixed ownership costs ÷ practical recorded units + operating cost per unit) × units used on the job
State which costs sit inside the calculation. A cost included in the machine allocation must not appear again as a separate job cost.
Record maintenance separately from job use. A clear machine history supports both costing and scheduling. The equipment maintenance checklist between jobs shows how to keep inspections, faults and service work attached to the right machine record.
Add hired plant when the supplier bill arrives
Assign hired plant to the job that used it. Enter delivery, collection and supplier charges in the hired-plant field.
Do not close the job-cost record while a crane, access platform or grinder bill is missing. Mark the cost as outstanding and hold the review open.
If one hire covers several jobs, split the charge using the machine units recorded against each job. Do not send the whole amount to whichever job was open when the invoice arrived.
A subcontractor who supplies a machine and operator for one combined charge should be recorded once. Put the package in the subcontractor or hired-equipment bucket chosen for the job. Never enter the same bill in both.
Follow waste from the cut to its destination
Waste handling is more than a disposal charge. It can consume cutting time, chipper use, loading labour, van use, travel, unloading time and supplier fees.
Create one load record every time material leaves or moves to a separate destination. Record:
- material carried
- departure time
- crew members affected
- vehicle or chipper units used
- waste destination
- return time
- supplier charge
- cause of any extra run
When material stays on site, record the material and its agreed position. Use plain descriptions such as woodchip retained on site, logs stacked for the client, arisings removed or stump grindings spread in the work area.
Keep the disposal record or supplier document with the job. Match its charge to the load record rather than leaving it in general expenses.
For waste-carrier registration, transfer records and disposal rules, check the official regulator for the nation where the work takes place: the Environment Agency (opens in a new tab) in England, the Scottish Environment Protection Agency (opens in a new tab) in Scotland, Natural Resources Wales (opens in a new tab) in Wales or the Northern Ireland Environment Agency (opens in a new tab) in Northern Ireland.
Record why an extra run happened
Add the extra crew time, vehicle use, machine units and supplier charge to the load record. Then name the cause.
The volume estimate may have been wrong. Restricted access may have slowed processing. The client may have asked for logs or chip to be removed when the quote said they would remain.
That cause is what improves the next allowance for tree removal costs. A larger waste total on its own does not tell the estimator what to change.
Stop and price a variation when the job changes
Do not fold extra work into the original scope. Stop. Describe the change. Price it. Get approval. Then continue.
A variation may be needed when the client adds a tree, requests stump work, changes the waste destination or asks the crew to remove material that was meant to remain. An unexpected access restriction can also change the work if the accepted scope was based on a recorded access condition.
Write the changed condition in physical terms. State what the crew found or what the client requested. Add the labour, equipment, subcontractor and waste effects that can be identified before work starts.
Keep the variation linked to the original job, but do not overwrite the baseline. Record its description, approval, selling price and known costs separately. The original quote should remain available for comparison.
When the work reaches billing, use the tree surgeon removal invoice guide to keep approved extras and the final invoice clear.
Approval does not prove the extra work made money. It only proves the client agreed to it. You still need to capture the extra crew time, machine use and waste movements.
Calculate tree job profit from matching figures
Tree surgeon job costing only produces a useful result when revenue and cost cover the same scope. Compare the original accepted price with the actual costs of that original work. Review a variation separately when its costs are known.
Profit is revenue minus the costs assigned to the job. Margin measures profit against revenue. Markup measures profit against cost.
Worked example: Oak Street
Oak Street is the house electrical example used to show the arithmetic. All figures below are sample currency units, not a rate card.
For R. Chen at 14 Oak Street, quote Q-1847 covered a bathroom exhaust fan and four LED downlights for 1,105. The recorded job cost against that original quote was 850.
Profit against the original quote was:
1,105 − 850 = 255
Margin was:
255 ÷ 1,105 ≈ 23%
Markup was:
255 ÷ 850 = 30%
The lined ceiling led to extra cable and chasing. That work was approved as a 160 variation, so invoice INV-1847 was 1,265.
Do not calculate profit by subtracting the 850 cost from the 1,265 invoice. The costs of the 160 variation are not given. Combining those figures would overstate the result.
Use the profit margin calculator after you have matched the revenue and costs. The calculator can do the arithmetic. It cannot repair a missing timesheet or machine log.
Turn each variance into one quoting correction
Compare each actual bucket with its estimate. Then write the event that moved it.
Separate an estimating error from a site change. Underestimated wood volume is an estimating error. A client instruction to remove retained logs is a scope change. Waiting because hired plant arrived late is a supplier delay. These events need different fixes.
Change only the part of the next quote affected by the evidence:
- adjust access labour when carrying or rigging took longer than allowed
- revise machine units when the grinder or chipper worked longer than planned
- change the waste assumption when load volume or destination caused another run
- amend the subcontract allowance when the completed package cost more than its accepted basis
- add a clearer exclusion when the crew completed work that was never priced
Do not raise every allowance because one job lost money. Use tree surgeon job costing to correct the cause before sending the next removal quote.