And wont you get 250 a day clean in your example? You will
Always hear builders excuse they have to run a van, tools, insurance, tea bags and so on - On the other hand every other job like IT, accountancy, law firms do the same and manage to publish their rates (including dentists)!
How would you get £250 clean in your pocket?
40% goes in tax for us paying taxes.
Then there's the diesel, tools, vehicle maintenance, consumables, clothes, shoes, insurance, accountants, etc.
In the end you'll end up with £120 in your pocket, clean.
The customer doesn't see it that way, that's why I always priced the complete job, not my hours.
Also, if you're charging by hour or day, every time the customer sees you having a break, they'll be moaning about it.
I always offered a fixed comprehensive quote and told them roughly how long it should take.
In my mind I would work out how long and then add days accordingly to the job.
For example, a straight forward job of fitting doors and frames with old ones already removed, would give me a very accurate idea of the hours needed, so on a 10 doors job I would add only one day.
For a full kitchen extension, i would add 1 week, if not 2.
Then if I finished earlier, even better.
Trouble starts when you tell the customer it will take 4 weeks and instead it goes into 6 weeks.
Customer won't be happy to pay 2 weeks extra wages.
Instead, with a comprehensive quote, they've agreed the price and they don't mind if it takes longer than expected, especially if you tell them why it's taken longer.