Write down the work you can actually identify
List booked or well-defined projects, the equipment configuration each requires and the time between them. Distinguish productive use from days spent waiting for access, drawings, weather or another trade. Avoid treating every calendar day as a earning day for the machine.
Build a complete rental comparison
Request delivery and collection, included hours, attachments, energy or fuel, cleaning and damage terms in the same quotation. Ask about extensions, early return and replacement arrangements. A low base rate can describe a very different service from an operated excavation package.
Build a complete ownership comparison
Account for purchase, transport, storage, inspection, maintenance, insurance and the people needed to run the machine. Identify which attachments and support equipment are necessary. Consider how you would cover a breakdown during a committed project and how readily you can obtain parts and service.
Compare the alternatives against the same project
Use a simple worksheet with the same working days and job scope for each option. Show uncertain costs separately rather than hiding them in a single confident total. Revisit the comparison when the workload or machine configuration changes.
There is a third option: hire the work
An excavation contractor can provide equipment, operator and supporting work under one scope. Compare responsibility, finished result and exclusions as well as the total. This may better fit a one-off project than taking on machine ownership or a bare rental.
Useful reference
Caterpillar — compact equipment and rental/buying resources ↗
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