Free · Lead Maths Calculator
What does a job actually cost you?
Most ‘bad leads’ are good leads nobody rang in time.
Cost per job
£400
Every £1 on ads brings back about £10 in work. The biggest leak is at the phone: 30% of leads book a survey. Calling every lead within 5 minutes is where that gets fixed.
Ad spend a month£1,200
- Leads£30 each40
- Booked surveys£100 each12
- Jobs won£400 each3
- Work won a month
- £12,000
- Back on ad spend
- 10x
What if 50% booked a survey
If you booked 50% of leads instead of 30%, that's about 2 more jobs and £8,000 more work a month at the same ad spend.
| A month | Now | After |
|---|---|---|
| Jobs | 3 | 5 |
| Work won | £12,000 | £20,000 |
| Cost per job | £400 | £240 |
Your own numbers worked through with one change, not a promise. What we aim for is every lead called within 5 minutes. Work won is before your costs, not profit.
The full breakdown
What’s in the breakdown.
Where the leak is
Whether you're losing jobs at the ad, at the phone call or at the quote, worked out from your own numbers.
What fixing speed to lead does to the numbers
What we aim for is every lead called within 5 minutes. The breakdown runs your numbers again with more of your leads booked, so you can see the gap in pounds.
What to fix first
The one change that moves your cost per job the most, in plain English, with the order to do the rest in.

Who made it
Luke Watkins, Social Flow
Built from 65+ calls with trades owners.
Apply
Ready to fill your diary?
Tell us where the business is now and where you want it to go. It takes 2 minutes.
What you get
- Meta ads filmed on your real jobs
- A lead page for every campaign, with the filter built in
- Every lead texted inside a minute, every job tracked
- Your CRM, your videos, your data. All yours.
- A monthly report showing what it cost and what it made you
Application only · One business per trade, per area.
What happens next
You apply. It takes 2 minutes.
We look at your numbers together. If it looks like a fit, you pick a time for a 30 to 60 minute call. We go through your business and tell you straight whether it’ll work.
If it’s not right yet, I’ll tell you. You’ll hear back from me personally, and I’ll point you somewhere better.

I read every application myself.Luke Watkins, founder