Putting a defensible number on deferred maintenance

Deferred maintenance is work that was needed, was not funded, and is still needed. Every organisation has it and almost none can state it in a number that survives a challenge. The gap between "we have a lot of deferred maintenance" and a defensible figure is the whole difference in a budget meeting.

What counts, and what does not

Being strict here is what makes the number survive. Deferred maintenance is work required to keep what you have working as intended.

• •In: repairs and replacements that are past due or due within the planning period
• •In: work required by regulation that has not been done
• •Out: improvements, extensions and changes of use, however sensible
• •Out: energy projects justified on payback rather than on condition
• •Out: anything you would not do even with unlimited money

The last one is the test people skip. If a system is at the end of its life on paper and has run perfectly for six years, putting its full replacement cost in the backlog will get the whole document questioned.

Price every line, and say how

A finding without a price does not exist in a budget. Each line needs a cost and a source: a quotation, a recent similar job, or a published rate per unit. Ranges are honest. Blanks are not.

Sort by consequence, not by cost

The backlog list should be ordered by what happens if it is not done, in a small number of bands.

• •Safety or legal: somebody could be hurt or you are in breach
• •Failure imminent: it will stop working within the year
• •Deteriorating: cost rises if it waits, often steeply
• •Cosmetic or comfort: real, and last

Show what waiting costs

The strongest line in any backlog document is the cost of delay. A roof repair at 120,000 this year that becomes a roof replacement plus internal damage at 400,000 in three years is an argument. A list of prices is a wish.

Report it as a trend, every year, the same way

One number, one method, one date each year. What persuades is not the size of the backlog but its direction under current funding, because that turns the conversation from "can we afford this" into "what are we choosing".

Record what was declined

When work is not funded, record it as a decision with a date and the expected consequence. That is not a defensive manoeuvre. It is the mechanism by which this year’s decision appears in next year’s number instead of quietly vanishing.