beginnerLead Generation

Cost Per Acquisition (CPA)

How much money you spend to turn a prospect into a paying customer — if you spend $168 on marketing to get one $8,000 concrete job, your CPA is $168.

Full Definition

Cost Per Acquisition includes all marketing costs to acquire a customer, not just generate a lead. While you might pay $42 for a lead, it typically takes 4 leads to close one job in concrete work, making your true CPA around $168. This metric tells you if your marketing investment is profitable.

Formula

totalMarketingSpend / numberOfCustomersAcquired

totalMarketingSpend= all marketing costs for the period including ads, lead services, etc.

numberOfCustomersAcquired= actual paying customers closed, not just leads generated

Example

Marketing spend: $2,500/month, Leads generated: 60, Close rate: 25%, Customers acquired: 15. CPA = $2,500 ÷ 15 = $167 per customer

For Contractors

Why It Matters

Your CPA determines if you're making money or losing money on marketing. A concrete contractor with an $8,000 average job and 20% profit margin can afford a CPA up to $1,600 and still be profitable. But most don't track this and wonder why they're not making money despite getting lots of leads.

Real-World Example

A concrete contractor in Phoenix spends $2,500/month on Google Ads and gets 60 leads. With a 25% close rate, they land 15 jobs worth $120,000 total. Their CPA is $167 per customer ($2,500 ÷ 15). With $24,000 profit (20% margin), they're spending $2,500 to make $24,000 — excellent return.

Common Mistakes

-Confusing CPA with CPL — thinking a $42 lead cost means $42 customer cost, when it's actually 4x higher due to close rates
-Not tracking CPA by lead source — paying $300 CPA on HomeAdvisor while Google Local Services delivers $150 CPA
-Setting CPA targets without knowing profit margins — agreeing to $500 CPA when you only make $400 profit per job
-Counting callbacks and existing customers as acquisitions, making CPA look artificially low

What to Do

Calculate your actual CPA right now: Take last month's total marketing spend, divide by the number of new customers you closed (not leads). If it's over 20% of your average job value, you need to improve your close rate or find cheaper lead sources immediately.

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Frequently Asked Questions

What's a good CPA for concrete contractors?

For concrete work with $8,000 average jobs and 20-35% profit margins, aim for CPA under 20% of job value — so under $1,600. Most successful concrete contractors achieve $150-300 CPA depending on their market and close rate.

Why is my CPA so much higher than my cost per lead?

Because CPA accounts for your close rate. If you pay $42 per lead but only close 1 in 4, your CPA is $168 ($42 × 4). This is normal — most contractors close 20-30% of quality leads in concrete work.

Should I include my salesperson's salary in CPA calculations?

Only if they're dedicated to closing leads from that specific marketing channel. For general overhead like office staff or project managers, keep CPA focused on direct marketing costs for clearer channel comparison.

How often should I calculate CPA?

Monthly minimum, weekly if you're actively optimizing campaigns. CPA can fluctuate with seasonality — concrete work often sees higher CPA in winter when fewer customers are looking, but those who do call are often higher-value projects.