- Enquiry
- Quote
- Agree
- Work
- Invoice
- Paid
Scope and Changes
Scope creep is discussed as though it were a customer tactic. Mostly it is a series of small accommodations by the supplier, each of which seemed too minor to charge for, and which together account for the difference between a job that made money and one that did not.
For a software-side reference alongside this discussion of pre-work decisions, contracts, and small-business administration, Monitask provides guidance on employee attendance tracking software.
How it actually happens
"While you're here, could you just..."
The request is small, the relationship is good, the work is five minutes, and charging for it feels petty. So you do it, and you do not mention it.
The next request is slightly larger, and now there is a precedent — not one you agreed to, but one you established.
By the fourth request the customer is not being unreasonable. They are behaving exactly as the previous three interactions taught them to, and the person who taught them was you.
The distinction that matters
Between work that is inside the description and work that is outside it.
Inside: anything the quote covers, including things you did not anticipate but that fall within what you described.
Outside: anything else, however small, however quick.
The size of the task is irrelevant to the classification. A five-minute job outside the scope is outside the scope, and treating it as inside because it is small is how the boundary dissolves.
What to say the first time
One sentence, at the moment of the request, before doing the work.
"I can do that — it's outside what I quoted, so I'll add it. It'll be about forty pounds."
That sentence is not confrontational and it is not a negotiation. It states three things: yes, it is extra, here is roughly what it costs.
The customer almost always says yes, because they wanted the thing done and forty pounds was never the obstacle. What they wanted was for it to be easy, and it still is.
Saying nothing is the decision that costs money, and it is a decision made by default in the two seconds before you start the work.
Where the free ones go
Some work should be free, and deciding which in advance stops the decision being made under pressure.
Genuinely trivial things that build goodwill — tightening something loose while you are there, a piece of advice, moving something out of the way.
Anything that is your own error.
And anything that takes less time to do than to discuss — but this is the category that expands until it swallows the others, and it needs a limit you have set beforehand rather than one you find in the moment.
Recording the ones you charge for
A text message is writing. "Confirming the extra socket in the hall, £40, on top of the original quote" takes twenty seconds and is the difference between an agreed variation and an item the customer will query on the invoice.
Verbal variations are the commonest source of end-of-job disputes, because both parties remember them and neither remembers them identically.
The pattern to watch for
A customer whose requests keep arriving in small pieces.
Some people do this deliberately, because a series of small unbilled additions is cheaper than one honest conversation about a larger scope.
Most do not, and the behaviour is a response to a supplier who has never once said that something was extra.
Either way the remedy is the same sentence, applied consistently from the first request rather than introduced at the point where you have had enough — because introducing it late reads as a change of attitude rather than as a standard practice.
The job that was always going to change
Some work cannot be scoped tightly, and pretending otherwise creates the problem rather than avoiding it.
Renovation, fault-finding, anything involving an existing installation. The honest response is a stated assumption in the quote and a rate for work beyond it.
Charging by time for the uncertain portion and by price for the known portion is the arrangement that fits, and it is more common than the two extremes of a firm price on an unknown or an open-ended hourly job.
It requires the customer to accept some risk, which is a conversation, and it is a shorter conversation than the one about why the firm price was exceeded.
What it protects
The margin, obviously.
But also the relationship. A supplier who absorbs everything and then becomes resentful is a worse counterparty than one who charges clearly from the start, and the customer usually has no idea any of it happened until the resentment surfaces.
Clear from the beginning is easier for both parties, and it is the same principle that runs through everything before the work starts.
What to do when it has already happened
Mid-job, with three unbilled extras behind you, the sentence still works — it just needs a preface.
"I should have said at the time: the last few bits were outside the quote. I'm not going to bill for those, but anything further I'll need to add."
That draws a line without a fight and without recovering the money already given away, which is the correct trade: the money is gone and the precedent is what you are actually reclaiming.
Trying to bill retrospectively for accommodations you accepted silently is the version that produces a dispute, because from the customer's side nothing was ever said and the invoice is the first they hear of it.
The short version
- Scope creep is mostly a series of small accommodations by the supplier, not a customer tactic
- Each one establishes a precedent you did not agree to, and by the fourth request the customer is behaving as taught
- The distinction is inside or outside the description; the size of the task is irrelevant to that classification
- Say one sentence at the moment of the request: yes, it is extra, here is roughly what it costs — the answer is almost always yes
- Decide in advance which things are free, or that category expands until it swallows the others
- Record charged variations in writing before doing them; a text message counts and takes twenty seconds
For broader background on pre-work decisions, contracts, and small-business administration, see Small Business Commissioner.