The short answer
Check the finished work against the agreed scope and the result the provider said was achievable. Use the same area list and photographs you supplied for the quote, then raise any missing work in WhatsApp.
Return to the original brief
Find the chosen quote and list of surfaces before reviewing the work. Check each named elevation, paved section, gutter run or window group. A useful completion check answers whether the agreed work was carried out; it should not silently add extra surfaces. Where a limitation or existing defect was recorded before booking, consider that alongside the finished appearance.
Check finishing and clearing up
Look at included edges, sills, waste removal and any joint or finishing work from accessible positions. Ask about sections that could not be reached and request the completion information agreed in the quote. Do not climb to inspect a roof or gutter. If a return visit forms part of the scope, confirm what remains and when the provider expects to complete it.
Ask when to assess the final appearance
Wet paving or a treatment still taking effect may not show the final result. Ask the cleaner when the surface can be used and when the finish should be assessed, based on the actual method and product. Record the aftercare instructions in the conversation. Avoid assuming every service has the same drying time or that a single photograph proves the condition of the whole property.
Raise a specific question promptly
If something appears missed, send a clear photograph, the location and the relevant part of the agreed scope in WhatsApp. Explain the result you expected and ask for a response. Keep the discussion factual and preserve the quote and updates. The cleaner’s agreed cleaning amount is payable after the completed job; use the same conversation to clarify any unresolved completion issue.