SkillMedev Local Unit Economics
Install this skill first. Every other local-service growth skill - google-business-profile-optimizer, review-engine, local-seo-playbook, quote-follow-up-sequences, no-show-reduction, local-referral-engine - spends money or staff time, and this model is what says whether that spend pays for itself. The costly mistake it prevents is judging marketing by cost per lead instead of cost per acquired customer: a cheap lead that never books, shows, or closes is the most expensive lead there is.
Work the example throughout: Summit Plumbing, a 4-tech residential plumbing company in a mid-size metro, average job $450, doing $75,000 a month - about 167 jobs.
Operating procedure
Follow the steps in order. CAC has to be computed before any verdict, and the funnel rates have to be gathered before CAC, because the whole model hinges on how many leads it takes to produce one paying customer.
Step 1: Define the unit and gather the inputs
The unit is one new customer - not one lead and not one job. Collect these, per lead channel (Local Services Ads, paid search, GBP/organic, referral). If a number is a guess, label it a guess and refine next month.
- Cost per lead, fully loaded. Channel spend plus attributable answering or CSR cost, divided by leads. Not ad spend alone.
- Booking rate. Share of leads that become booked appointments. Phone answer speed dominates this number.
- Show rate. Share of booked appointments that actually happen. This is 1 minus the no-show rate.
- Close rate. Share of completed visits that turn into a paid job. Blend on-the-spot service work and written estimates.
- Average ticket. Revenue per job.
- Gross margin after direct labor and materials. Residential trades commonly run 0.50 to 0.60.
- Repeat rate in the first 90 days. Extra jobs per new customer inside 90 days, as a fraction (0.15 means 15 percent come back once within 90 days).
- Jobs per customer over roughly three years, including the first.
Summit's numbers, used in the calculator below: $50 loaded cost per Local Services Ads lead, 75 percent booking, 86 percent show (a 14 percent no-show rate), 65 percent blended close, $450 ticket, 55 percent margin, 0.15 repeat rate, 2.2 jobs over three years.
Step 2: Compute cost per acquired customer
Lead-to-customer rate equals booking rate times show rate times close rate. CAC equals cost per lead divided by that rate. Divide - never use cost per lead as CAC - because the spend wasted on leads that never became customers lands on the ones who did.
Step 3: Apply the 2x cash rule to the first job
The first job collects the average ticket at completion. The 2x cash rule: the first job should collect at least twice CAC. At 1x the business treads water; at 2x, every two customers fund the acquisition of a third, and growth compounds without outside cash. This rule is defined here once; the other skills in this pack cite it when justifying spend.
Step 4: Compute first-90-day cash and lifetime value
- First-90-day cash per customer equals average ticket times (1 plus the 90-day repeat rate).
- LTV equals average ticket times jobs per customer over three years times gross margin. This is contribution, not revenue.
Step 5: Read the verdict against three targets
- First job passes the 2x cash rule.
- LTV to CAC at or above 3 to 1. Above 5 to 1 usually means underspending on growth.
- Payback inside the first job: first-job cash at or above CAC.
All three pass: scale that channel until crew capacity, not cash, is the constraint. Any fail: go to Step 6.
Step 6: Diagnose the constrained lever, cheapest fix first
- Booking rate under 70 percent. Fix phone answering before anything else - answer live or call back within five minutes. Costs nothing in ad spend.
- No-show rate above the 10 percent red line (show rate under 90 percent). Go to no-show-reduction. Summit books roughly 300 appointments a month, so its 14 percent no-show rate is about 42 missed visits; cutting it to 7 percent recovers about 21 visits, roughly 14 jobs, roughly $6,100 a month in gross revenue.
- Written-estimate close rate under 50 percent. Go to quote-follow-up-sequences - the leak is usually follow-up, not price.
- Cost per lead high but funnel healthy. Build free prominence before buying more leads: google-business-profile-optimizer, review-engine, then local-seo-playbook.
- Average ticket low. Quote good/better/best options instead of one price. Never fix a ticket problem by discounting.
Step 7: Produce the channel economics sheet
Fill the template below per channel and re-run monthly. Compare channels on CAC and payback, not cost per lead.
Inputs to elicit
Ask for: monthly spend and lead count per channel, booked appointments, no-show count, jobs won from those visits, average ticket, and margin. Defaults if unknown: booking 70 percent, show 88 percent, close 55 percent, margin 0.55 - all labeled as guesses until replaced with real counts.
Calculator
Self-contained Node script. Save as local_econ.js, edit the inputs block,
run with node local_econ.js. No dependencies.
// Local service unit economics. Edit inputs, then: node local_econ.js
const inputs = {
costPerLead: 50, // fully loaded, for the channel being judged
bookingRate: 0.75, // leads that become booked appointments
showRate: 0.86, // booked appointments that happen (1 - no-show rate)
closeRate: 0.65, // completed visits that become a paid job
avgTicket: 450, // average revenue per job
grossMargin: 0.55, // after direct labor and materials
repeatRate90d: 0.15, // extra jobs per new customer within 90 days
jobsPerCustomer3y: 2.2, // jobs over ~3 years, including the first
}
function model(i) {
const leadToCustomer = i.bookingRate * i.showRate * i.closeRate
const cac = i.costPerLead / leadToCustomer
const firstJobCash = i.avgTicket
const passesTwoXRule = firstJobCash >= 2 * cac
const cash90d = i.avgTicket * (1 + i.repeatRate90d)
const ltv = i.avgTicket * i.jobsPerCustomer3y * i.grossMargin
const ltvToCac = ltv / cac
const paybackFirstJob = firstJobCash >= cac
const selfFunding = passesTwoXRule && ltvToCac >= 3 && paybackFirstJob
return { leadToCustomer, cac, firstJobCash, passesTwoXRule,
cash90d, ltv, ltvToCac, paybackFirstJob, selfFunding }
}
const r = model(inputs)
const money = (n) => '$' + n.toFixed(2)
console.log('Lead-to-customer rate: ', (r.leadToCustomer * 100).toFixed(1) + '%')
console.log('CAC per customer: ', money(r.cac))
console.log('First-job cash: ', money(r.firstJobCash))
console.log('Passes 2x cash rule: ', r.passesTwoXRule ? 'yes' : 'no')
console.log('First-90-day cash per customer: ', money(r.cash90d))
console.log('LTV per customer (contribution): ', money(r.ltv))
console.log('LTV:CAC: ', r.ltvToCac.toFixed(2) + ':1')
console.log('Payback inside first job: ', r.paybackFirstJob ? 'yes' : 'no')
console.log('Self-funding verdict: ', r.selfFunding ? 'SELF-FUNDING' : 'NOT YET')
Worked example output
With Summit Plumbing's inputs above the script prints:
Lead-to-customer rate: 41.9%
CAC per customer: $119.26
First-job cash: $450.00
Passes 2x cash rule: yes
First-90-day cash per customer: $517.50
LTV per customer (contribution): $544.50
LTV:CAC: 4.57:1
Payback inside first job: yes
Self-funding verdict: SELF-FUNDING
Read it: it takes about 2.4 leads to make one customer, so the $50 lead becomes a $119 customer. The first job collects $450 against that $119 - comfortably past the 2x cash rule - and lifetime contribution of $544.50 puts LTV to CAC at 4.57 to 1. Summit can scale this channel. But note the diagnosis in Step 6: the 86 percent show rate sits below the 90 percent line, and cutting no-shows to 7 percent with no-show-reduction would drop CAC from $119.26 to about $110 and recover roughly $6,100 a month in gross revenue. Self-funding is not the same as leak-free.
Template: channel-economics-sheet
LOCAL SERVICE UNIT ECONOMICS. [FILL: business]. [FILL: channel]. [FILL: month]
INPUTS
Cost per lead (loaded): $[FILL]
Booking rate: [FILL]%
Show rate: [FILL]% (no-show [FILL]%)
Close rate: [FILL]%
Average ticket: $[FILL]
Gross margin: [FILL]%
90-day repeat rate: [FILL]
Jobs per customer (3y): [FILL]
OUTPUTS (from calculator)
CAC per customer: $____
Passes 2x cash rule: yes / no
First-90-day cash: $____
LTV:CAC: ____:1
Payback inside first job: yes / no
Verdict: SELF-FUNDING / NOT YET
CONSTRAINED LEVER (if not self-funding, or any funnel rate below floor)
Bottleneck: [FILL: booking / show / close / cost per lead / ticket]
Action: [FILL: one move]
Owner: [FILL]
Deliverable
A filled channel-economics-sheet per lead channel, the calculator output pasted in, a one-line verdict per channel, and - if any target fails - exactly one named bottleneck with one action and the skill that fixes it.
Do NOT
- Do not treat cost per lead as CAC. The wasted spend on leads that never close belongs in the number.
- Do not use revenue for LTV; use contribution after gross margin, or every channel looks affordable.
- Do not blend all channels into one average - a great referral channel can hide a bleeding paid channel.
- Do not scale spend on LTV alone while first-job cash misses the 2x rule; a business with strong LTV and weak near-term cash still runs out of money.
- Do not fix a funnel-rate problem with more lead spend. More leads through a leaky funnel just raises the water bill.
Quality bar
- Every input sourced from real counts or explicitly labeled a guess.
- CAC divides by the full lead-to-customer rate, not by booking rate alone.
- The verdict cites all three targets, not one.
- If not self-funding, the sheet names exactly one lever, one action, and the pack skill that executes it, and the model is re-run after the change.
Escalation and routing
This is operating math, not accounting or tax advice - margin and cash questions with tax consequences go to the business's accountant. Route gym economics to gym-money-model and software or subscription economics to unit-economics. When the bottleneck is identified, hand off: booking problems to phone process, show problems to no-show-reduction, estimate-close problems to quote-follow-up-sequences, cost-per-lead problems to google-business-profile-optimizer, review-engine, and local-seo-playbook, and referral expansion to local-referral-engine.