I've had two jobs in the last month where the time I estimated has over run, dues to circumstances beyond my control. After nearly 3 years I'm able to estimate the time for most jobs pretty accurately, but I can't predict unforeseen problems.
First one involved, amongst a number of other unrelated jobs, fitting a back nut to a hot tap & changing the washer. The gate valve failed in the closed position, so I had to drain a loft tank, & fit a new valve.
I'd estimated 5 hours for the various jobs and although the extra work took me another hour, I stuck to the 5 hour quote. The lady has now rung me to say I didn't fit a smoke alarm that was on her list & wants me to go back & fit it FOC.
OK its only a 5 minute job, but I have to drive 4 miles to get there. I've already worked 6 hours for 5 hours pay, so I'm out of pocket.
Another job involving 3 days work threw up a few unforeseen problems. Changing a few light switches revealed one with neutrals just twisted together & loose earths, removing a hearth which involved inserting a new joist - although I was told it wouldn't be necessary, and installing some new ceiling lights which involved lifting floorboards above to sort out yet more dodgy wiring.
I'm left with about 3 hours work to complete the list.
In both cases I stressed at estimate time that it was an estimate, not a fixed quotation.
It seems to me that if I quote 5 to 6 hours for a list of jobs, people are more than happy to pay less if the jobs go well & it only takes 4 hours, but they think the price was fixed in stone if it takes 7 hours.
I've ended up agreeing to finish off both jobs FOC to keep the customers happy, but I'm out of pocket because of it.
Should I become much harder with these people, or do I have to just swallow the loss?