How do I work out what each new plumbing customer costs me in marketing?<\/h2>\n
Add up everything you spent to win new customers in a month, including ad spend, Local Services Ads charges after credits, agency and software fees, and any wages paid for marketing work, then divide it by the number of first-time customers who paid you for a job in that same month. Work it out for each channel as well as overall, and count only new customers, not calls, leads or repeat customers. Then compare the result with what a new customer’s first job brings in, because a low cost per lead can still hide a cost per customer that loses money.<\/p>\n
Knowing what a new customer costs is the number that tells you which marketing to keep, which is why we judge our own work by cost per booked job rather than clicks. Every plumbing marketing<\/a> package includes call tracking, source tagging and a monthly report with a cost-per-lead breakdown, and ad spend is paid directly to Google or Meta, so both lines show up separately in your math. Our packages page<\/a> lists what each tier costs, and the rest of the plumbing marketing questions<\/a> library goes question by question.<\/p>\n It’s what you spend in marketing, on average, to win one new paying customer. Owners usually call it cost per new customer or cost per job, and it sits at the end of a chain of numbers that all sound alike:<\/p>\n Each step down the chain costs more per unit, because some leads never book, some booked jobs never run, and some customers were already yours. The last number is the one that tells you whether your marketing is buying new business at a price you can afford.<\/p>\n Use a calendar month, and make one line for each channel you pay for or track: Google Ads, Local Services Ads, your Google Business Profile, your website, direct mail, a lead platform, referrals, and anything else that brings in work.<\/p>\n A month is short enough to act on and long enough to have a few customers in each line. For channels that bring in only a handful of new customers a month, look at the last three months together as well, so one good or bad week doesn’t swing the number. That’s our judgement, not a rule.<\/p>\n Keep the period the same on both sides of the math: the money spent in the month, and the new customers who first paid you in that month. If a big job sells weeks after the first call, note it; the tracking which marketing books jobs<\/a> page covers tying a sale back to the call that started it.<\/p>\n Everything you spent to bring in customers, and nothing you spent doing the work. In our judgement, put in:<\/p>\n Leave out what it costs to run the job itself: the plumber’s labor, parts and truck. Those belong in your job costing. One-time costs, like a truck wrap or a new website, can be spread over the months you expect them to keep working, as long as you’re consistent.<\/p>\n This is the step most owners get wrong, because the easy number to grab is calls or leads. A call isn’t a customer, and a repeat customer isn’t a new one.<\/p>\n The count you want: customers who paid you for a job this month and had never paid you before, each with a lead source attached.<\/p>\n For each channel, divide that channel’s costs by its new customers. Then divide total marketing costs by total new customers for the blended number.<\/p>\n Cost per new customer = marketing costs for the month \u00f7 new paying customers that month<\/strong><\/p>\n Do both, because they answer different questions. The blended number tells you what growth is costing the business overall. The per-channel numbers tell you where to move money. A blended number can look healthy while one channel is losing money on every customer it brings in, as the worked example below shows.<\/p>\n Channels with no spend, like referrals or a well-run Google profile, still go in the table with their new customers. They bring the blended cost down, and they’re the reason it would be a mistake to judge the whole marketing budget by its most expensive channel.<\/p>\n With what that new customer is worth. Start with the first job, because it’s the number every field system can give you. Jobber’s Lead Source Report shows the invoice value from the first invoice linked to a lead, on the reasoning that it’s the first payment from a lead source that counts (Lead Source Report<\/a>).<\/p>\n ServiceTitan’s marketing reports offer two ways to express the comparison:<\/p>\n In our judgement, compare against gross profit, not just revenue, once you know your numbers: a new customer who pays $380 for a job with parts and labor in it hasn’t left you $380 to spend on marketing. And remember the first job is the floor of what a plumbing customer is worth, not the ceiling, if they call you again. How much you can afford to pay for a lead<\/a> turns this into a ceiling for lead costs.<\/p>\n Subtract them, but in the month they land. Google’s page on automated Local Services Ads lead credits<\/a> says charged leads are reassessed over time and may be credited if they’re later found to be low quality, that credits are applied to your account balance within 30 days in most cases, and that the original lead charge still appears on your invoice.<\/p>\n So the invoice alone overstates what LSAs cost you. Pull the charged and credited leads from your lead reports, and use charges minus credits as the LSA cost. Be consistent about timing: either count a credit in the month it was applied, or go back and adjust the month the lead came in, and stick with that choice. Whether LSAs are worth it for plumbers<\/a> covers the rest of how they’re charged.<\/p>\n Not as your customer acquisition cost. Google’s help page defines cost per conversion as your total cost divided by the number in your Conversions column, calculated only on eligible interactions, so clicks that can’t be tracked for conversions are left out (Understand your conversion tracking data<\/a>).<\/p>\n A “conversion” is whatever action the account was set up to count: often a call of a certain length or a form fill. That’s a lead, not a customer, and it doesn’t know whether the call booked, whether the job ran or whether the caller was a customer you already had. Use cost per conversion to manage the ad account, and your own books and field software for cost per new customer. If the two are far apart, the gap is usually booking, follow-up or lead quality, and clicks without calls<\/a> covers one end of that.<\/p>\n Because cheap leads that don’t book, or book small, can cost more per customer than expensive leads that do. ServiceTitan’s help page walks through this with its own example: an agency reports its lowest cost per lead ever, $50, but the campaigns behind it bring in little revenue, the average ticket is only $59 (the dispatch fee), and the business is losing money on the ads. The cause in that example was the budget drifting toward “cheap” repair searches.<\/p>\n Plumbing has the same trap, in our view: searches and offers that attract price shoppers fill the call log and the low end of the schedule. The fix is to judge each channel by cost per new customer and by the size of the jobs it brings, not by cost per lead alone.<\/p>\n Monthly, at the same time you review the marketing. In our judgement, four things move it more than anything else:<\/p>\n The first three are usually cheaper to fix than the fourth. How much to spend on marketing each month<\/a> covers setting the budget itself.<\/p>\n A free visibility audit checks the Google profile, reviews, site and tracking, and shows what to fix first.<\/p>\n<\/div>\n Ticket sizes are far apart.<\/strong> A plumbing shop sells drain clears, fixture repairs, water heater replacements, repipes and sewer lines, often off the same ads. A cost per new customer that’s fine for a water heater replacement can be ruinous on a drain call. In our judgement, it’s worth working out a separate cost for your big-ticket work: marketing cost for those campaigns divided by sold big jobs.<\/p>\n Emergencies skew the first invoice.<\/strong> An emergency call often lands as a single repair. Whether that customer comes back for the water heater next year depends on how the job went and whether you stay in touch, so the first invoice undersells many plumbing customers. Treat it as the floor.<\/p>\n Some new customers come through accounts.<\/strong> Commercial accounts, property managers and home warranty dispatch bring in work you didn’t market for in the usual way. Give them their own lines so they don’t make your advertising look cheaper than it is.<\/p>\n These numbers are made up to show the math, not a benchmark for your market. Say one month looks like this:<\/p>\n Total marketing cost is $5,800 for 58 new customers: a blended $100 per new customer, which looks fine. Now say the average first invoice is $380. Google Ads and LSAs win customers for well under the first ticket. The mailer is spending $400 to win a customer whose first job brings in $380, before parts and labor, so it only makes sense if those customers come back or buy bigger work. The blended number hid that.<\/p>\n If you spend real hours on marketing every week, put a value on them, at least in a separate line. Otherwise the channels you run yourself look free when they aren’t.<\/p>\n No. Cost per lead divides spend by calls, forms and messages; customer acquisition cost divides it by first-time customers who paid you. It’s always the higher of the two, because not every lead books, runs and pays.<\/p>\n Not in customer acquisition cost. Track them in their own line, since a repeat job usually costs little or nothing in marketing, and mixing them in makes your marketing look cheaper than it is.<\/p>\n Put them in an unknown line and keep the line visible. If it’s large, fix the lead source step at the office before trusting any per-channel number.<\/p>\n Yes. Ad spend and the fee to manage it are both costs of winning the customer, so a channel’s cost is the spend plus its share of the fee.<\/p>\n There’s no fixed count, but a channel with only one or two new customers a month will swing wildly. Look at it over three months before cutting or doubling it.<\/p>\n We'll look at how you show up locally and where calls are leaking, then send you a plain-English breakdown.<\/p>\n<\/div>\n Work out what a new plumbing customer costs: which costs to count, how to count new customers, per-channel vs blended, LSA credits and what to compare it to.<\/p>\n","protected":false},"author":2,"featured_media":852,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_yoast_wpseo_canonical":"","ll_review_state":"approved","ll_template_version":"v1","ll_sources":"[\"https:\/\/help.servicetitan.com\/roofing\/docs\/use-marketing-pro-ads-analytics\", \"https:\/\/help.servicetitan.com\/docs\/add-marketing-campaigns-in-servicetitan\", \"https:\/\/support.google.com\/google-ads\/answer\/6270625?hl=en\", \"https:\/\/help.getjobber.com\/en\/articles\/lead-source-report\/\", \"https:\/\/help.housecallpro.com\/en\/articles\/5434315-how-to-use-lead-sources\", \"https:\/\/support.callrail.com\/hc\/en-us\/articles\/5712078904589-Unique-Callers-report\", \"https:\/\/support.google.com\/localservices\/answer\/15100654?hl=en\"]","ll_faq":"[{\"q\": \"Should I include my own time in customer acquisition cost?\", \"a\": \"If you spend real hours on marketing every week, put a value on them, at least in a separate line. Otherwise the channels you run yourself look free when they aren't.\"}, {\"q\": \"Is customer acquisition cost the same as cost per lead?\", \"a\": \"No. Cost per lead divides spend by calls, forms and messages; customer acquisition cost divides it by first-time customers who paid you. It's always the higher of the two, because not every lead books, runs and pays.\"}, {\"q\": \"Do repeat customers count?\", \"a\": \"Not in customer acquisition cost. Track them in their own line, since a repeat job usually costs little or nothing in marketing, and mixing them in makes your marketing look cheaper than it is.\"}, {\"q\": \"What if I can't tell where a customer came from?\", \"a\": \"Put them in an unknown line and keep the line visible. If it's large, fix the lead source step at the office before trusting any per-channel number.\"}, {\"q\": \"Should the agency fee be in the number?\", \"a\": \"Yes. Ad spend and the fee to manage it are both costs of winning the customer, so a channel's cost is the spend plus its share of the fee.\"}, {\"q\": \"How many new customers do I need before the number means anything?\", \"a\": \"There's no fixed count, but a channel with only one or two new customers a month will swing wildly. Look at it over three months before cutting or doubling it.\"}]","ll_cluster_id":"plumbing-0302","ll_hub":"plumbing","ll_lang":"en","ll_last_regenerated":"2026-10-24","tldr":"What does customer acquisition cost mean for a plumbing company?<\/h2>\n
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Step 1: What period and which channels should I use?<\/h2>\n
Step 2: Which costs go into the number?<\/h2>\n
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Step 3: How do I count new customers, not just calls?<\/h2>\n
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Step 4: How do I do the division?<\/h2>\n
Step 5: What should I compare my cost per new customer with?<\/h2>\n
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Step 6: How do Local Services Ads credits change the math?<\/h2>\n
![\"Plumber](\"https:\/\/www.limitless-local.com\/resources\/wp-content\/uploads\/2026\/10\/plumber-installing-new-water-heater-for-customer.webp\")
<\/figure>\nCan I use Google Ads' cost per conversion instead?<\/h2>\n
Why can my cost per lead look good while my cost per customer is bad?<\/h2>\n
How often should I work it out, and what moves the number?<\/h2>\n
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Not sure which of these is costing you jobs?<\/h4>\n
What's different about acquisition cost for plumbers<\/h2>\n
A worked example: one month, four channels<\/h2>\n
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![\"Bar](\"https:\/\/www.limitless-local.com\/resources\/wp-content\/uploads\/2026\/10\/work-out-plumbing-customer-acquisition-cost-cost-per-new-customer-by-channel.webp\")
<\/figure>\nFrequently asked questions<\/h2>\n
Should I include my own time in customer acquisition cost?<\/h3>\n
Is customer acquisition cost the same as cost per lead?<\/h3>\n
Do repeat customers count?<\/h3>\n
What if I can't tell where a customer came from?<\/h3>\n
Should the agency fee be in the number?<\/h3>\n
How many new customers do I need before the number means anything?<\/h3>\n
Key takeaways<\/h2>\n
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Want a second set of eyes on your setup?<\/h4>\n
More in this section<\/h2>\n
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Sources<\/h2>\n
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