Built Logic

Free calculator for contractors

How much profit are you giving away on small extras?

A socket moved. Extra boxing in. Small extras your team does but never charges for. Put in your own numbers to see what they’re worth, then how AI can log them for you.

Estimate what you could recover

These are example figures, not industry averages. Use your own for one year, excluding VAT.

Example

Count each job once, including ones still running.

Example

A rough guess from a recent job is fine.

Example

What you’d charge as a variation, excluding VAT.

Example

Put 0 if you’d charge for every extra.

Example

Of what’s left to charge, after any variations are cut or turned down.

Example

What you keep after all costs. Margin, not markup.

  • Extra profit a year

    £19,200

    The work’s already paid for, so what you recover is profit. Leaves out the cost of chasing it.

  • Extra profit a month

    £1,600

    The yearly figure divided by 12. Payment dates will vary.

  • Extra profit per job

    £960

    £19,200 across 20 jobs.

  • New work needed for the same profit

    £192,000

    To make £19,200 profit at a 10% margin.

Let AI do the logging

Your site manager sends a voice note or photo against the job. AI drafts the log entry and flags missing details. Where there’s a matching rate, it adds a draft price for your QS to check.

Your QS checks the entry, then sends it to the client as a variation or marks it “free of charge”. The client sees it while the work is still fresh, and you keep the priced record for the final account.

Example

Voice note from site

“Client’s asked for another double socket in the kitchen on plot 4. Took about two hours.”

Draft log entry

Job
Plot 4
Work
One extra double socket, kitchen
Time spent
About 2 hours
Asked by
Missing: who asked?
Draft price
Your rate for a double socket, if you have one. QS to check.
Status
Waiting for QS
Find out where AI pays back

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