What a customer is really worth (not just their first job)
A customer's lifetime value is the total profit they bring you over the whole time they use you, not just their first job. Multiply your profit on an average job by how often they come back and how many years they stick around, then add the profit from anyone they refer. The total is usually several times bigger than the first invoice ever suggested.
Most trades price and market job by job. A new enquiry comes in, you work out if it is worth winning, you do the job, you bank the profit, you move on. For a genuine one-off, fence today, gone tomorrow, that is exactly the right way to think about it.
But plenty of customers are not one-offs. The couple who call you back every year for the boiler service. The landlord who rings whenever a rental needs work. The homeowner who does the bathroom this year and the deck next. Judge any of them on their first job alone, and you are looking at a fraction of what they are actually worth.
Why the first job undersells a good customer
Say a job is worth $600 to you at a 40% margin, $240 profit. On its own, that is the whole story: win it, do it well, take the $240. But if that same customer books you again most years, and stays a customer for five years, the $240 repeats. And if they tell a couple of people about you along the way, each of those referrals adds another slice of profit that cost you nothing to win.
A worked example
Take that $600 job at a 40% margin, a customer who books roughly 1.2 jobs a year, stays with you for 5 years, and sends half a referral your way on average over that time:
| Profit per job ($600 × 40%) | $240 |
| Direct profit (1.2 jobs/yr × 5 yrs) | $1,440 |
| Referral profit (0.5 referrals) | $120 |
| Total lifetime value | $1,560 |
If that customer cost you $150 in marketing spend to win in the first place, the number that matters is not "I spent $150 to make $240." It is "I spent $150 to make $1,560." Seen that way, a marketing cost that looked borderline against one job looks very cheap against the whole relationship.
What this changes about how you spend
Once you know roughly what a customer is worth over time, a few decisions get easier:
- How much you can afford to spend winning one. If lifetime value is well above your cost per customer, from the Marketing ROI Calculator, you likely have room to spend more, not less, especially on channels that bring the right kind of repeat customer.
- Whether it is worth chasing the cheapest lead. A slightly more expensive channel that brings loyal, repeat customers can easily beat a cheap one that brings one-off bargain hunters.
- How much effort keeping customers happy deserves. A service reminder, a follow-up call, a genuine effort to do right by a comeback job, all of it is an investment in a number bigger than the job in front of you.
Referrals are worth more than they look
A referred customer costs you nothing in marketing spend and often converts easily, because someone has already vouched for you before you ever picked up the phone. This guide treats a referral as one job's worth of profit to keep the maths simple, but a referred customer can become a repeat customer too, and refer people of their own. Word of mouth compounds in a way paid marketing rarely does, which is exactly why a two-minute ask for a review, using the Review Request & QR Builder, is worth building into how you finish a job.
Frequently asked questions
What is customer lifetime value?
Why does lifetime value matter more than one job's profit?
How do I estimate jobs per year and years as a customer?
What do I do with the lifetime value number?
The takeaway
A customer is worth more than their first invoice suggests, and knowing roughly how much more changes what looks like sensible spending on marketing and on keeping people happy. Work out the number once, and every decision about who to chase and how hard to keep them gets a little clearer.