The useful starting point is to make the required outcome visible, assign the right checks to the right stage of the work, and record anything that needs a decision rather than relying on an informal handover.
What to focus on
- Start with the expected hours per visit and the actual number of weekly visits.
- Use the fully loaded labour or subcontractor cost you expect to pay, not only a headline wage.
- Check whether holidays, absence cover, supervision and travel are included elsewhere in the model.
Put the process into practice
Start with the actual property, site or job you are managing. Confirm the scope, access, person responsible for decisions and any evidence that needs to be captured. The aim is not to create paperwork for its own sake; it is to make the next step clear for the person doing the work and the person reviewing it.
Where the work involves a client site, guest property or handover deadline, keep changes and exceptions visible. A small, well-run record is usually more useful than a lengthy document nobody returns to.
COMMON QUESTION
Should I use four weeks per month?
For a closer monthly estimate, use your chosen weeks-per-month assumption consistently and make it visible in the calculation.