Comparing cleaners before a Marsden Park building is finished

Drawings give area, layout, the number of amenities and the general arrangement, which is enough to produce a credible estimate. They do not give the finishes, the actual traffic pattern, how the loading area will be used, where waste will be stored, or the dozen small things that determine how long a clean takes. A provider who acknowledges that distinction is telling you their figure is provisional in specific ways.

Ask each bidder to list their assumptions explicitly. Floor finish, glass quantity, amenity fittings, waste arrangement, access hours. That list is more useful than the price, because it shows you where the number could move and by how much. It also gives you a checklist for the verification walk, which becomes a comparison of assumptions against reality rather than a fresh negotiation and a much better conversation than a fresh set of quotes.

A newly completed building produces construction residue for weeks after practical completion. Dust from the ceiling void, film on glass, adhesive marks and debris from trades returning for defects work all continue well past handover. Treating that period as ordinary cleaning underprices it and produces a building that looks poor precisely when its first occupants are forming an impression of it and forming it during the weeks that matter most.

Price it as a separate uplift with a stated end date rather than absorbing it into the routine schedule. A defined period at a higher frequency, ending automatically, keeps the arrangement honest in both directions. It also means the routine figure reflects the building in normal operation rather than carrying an inflated allowance for a condition that will not persist once the building settles into ordinary use.

Write into the arrangement that a joint walk occurs within a fortnight of occupation, that the assumptions list is checked against the completed building, and that the scope and price may be adjusted in either direction as a result. Agreeing this at appointment removes almost all of the friction, because both parties expected the conversation and neither is asking for a favour and neither is negotiating from a position of surprise.

Set a second review three months later. The first walk catches the physical differences; the second catches the usage differences, which only appear once people are in the building and behaving as they actually behave rather than as the design intended. Two scheduled conversations in the first quarter is a small commitment and it prevents most of the disputes new buildings generate and it costs nothing beyond two entries in a calendar.