Illustrative example
A block's annual service charge has gone from about fourteen hundred pounds a flat to nearly five thousand in a single year. The managing agent will not itemise it, and the leaseholders say the gardening and cleaning listed are barely happening.
Section 19 contains two separate tests, and this dispute engages both. Costs count only to the extent they were reasonably incurred, and where they are for services or works, only if those are of a reasonable standard - so a cost can be disallowed either because too much was spent or because what arrived was not good enough. The fact that shapes the case is which of the two each item falls under, because the evidence differs: quotations and procurement for the first, photographs and attendance records for the second.
The agent supplies an itemised account and the cleaning and gardening schedules within six weeks, credits the charge for the months the schedules were not met, and the leaseholders pay the balance of the year's charge on that basis.