Opus Group Insights
Plumber Cost-Per-Booked-Job Calculator (Free)
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Summary: Enter your ad spend, leads, close rate and average job, and the calculator shows your cost per lead, cost per booked job and work booked per dollar. It also shows the same month at 25%, 35% and 45% close rates. Nothing is stored. The figures are examples from your own inputs, not a forecast.
Your numbers
Example numbers, replace with yours. Runs in your browser. Nothing is stored or sent.
| Same month at | Booked jobs | Ad spend per booked job |
|---|
Estimates from your own inputs, not a forecast.
The calculator above runs in your browser. Nothing you type is sent anywhere or stored. Change the example numbers to yours.
How the numbers work
- Cost per lead = ad spend ÷ leads.
- Booked jobs = leads × close rate.
- Ad spend per booked job = ad spend ÷ booked jobs. This is the number to manage.
- Work booked = booked jobs × average job.
- Work booked per $1 of spend = work booked ÷ ad spend. This is revenue before labor, materials and overhead.
Backwards mode: what do you need for the jobs you want?
- Leads needed = booked jobs wanted ÷ close rate.
- Monthly ad spend = leads needed × cost per lead.
- Daily budget = monthly ad spend ÷ 30.4.
Example numbers to swap for yours: 15 jobs at a 35% close rate need about 43 leads. At $55 a lead that is about $2,365 a month, or about $78 a day.
What the benchmarks say
These are for reference. Your own data beats them.
| Measure | Reference |
|---|---|
| Cost per call or message from Google, clients' best months | $44–$90 |
| Close rate | Your own, from your job records; it varies by trade, lead source and answer speed |
Across the accounts we run, the last twelve months averaged $63 a lead.
Why close rate matters more than it looks
At $50 a lead, a 25% close rate is $200 of ads per booked job. At 45% it is about $111. The ads did not change. The phone did. Read why speed decides who gets the job, then see call tracking and attribution for plumbers to get your real close rate by channel.
Next
- Budget: plumber PPC budget
- Comparing channels: Google Ads vs Local Services Ads for plumbers
- Account check: Google Ads self-audit scorecard for plumbers
- The whole monthly bill: what plumber marketing costs in 2026
- Testing a lead network: pay-per-call plumbing leads
Want your real numbers modelled?
Opus Group runs Google Ads, landing pages and Local Services Ads for home-service businesses, month to month with 30 days' notice. Book a free strategy call and bring your last month of spend and jobs.
For the Local Services Ads side, the free guide uses the same chain.
FAQ
Does the calculator store my numbers?
No. It runs in your browser and nothing is sent or saved.
What is cost per booked job?
Cost per lead divided by close rate. A $60 lead at a 35% close rate is about $171 per booked job.
What close rate should I use?
Your own, from the last few months. If you have no history, track every lead for a month and count what books; that's your starting rate.
Is the revenue figure my profit?
No. It is work booked, before labor, materials and overhead.
Can I compare two channels?
Run the calculator once for each channel, using each channel's own spend, leads, close rate and job value.
Opus Group runs Google Ads, Local Services Ads and high-converting landing pages for local service businesses. See how it works.
Opus Group is a plumbing marketing agency working with plumbers across the US, including Chicago, Sacramento, San Diego and Charlotte.
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