Cost Per Acquired Customer in Roofing (Channel Comparison)

The single number that determines whether your roofing business is profitable is cost per acquired customer (CAC). Not per-lead cost. Not close rate. CAC.

Most roofers don't actually know their CAC. They know what they pay for leads — but not what they pay per closed deal. This post is the channel-by-channel breakdown in 2026, with the math worked through transparently.

CAC vs CPL — why the distinction matters

CPL (cost per lead) is what marketing pages quote. CAC (cost per acquired customer) is what determines your margins.

The relationship:

CAC = CPL ÷ Close Rate

Example:

• $50 CPL × 5% close rate = $1,000 CAC
• $250 CPL × 25% close rate = $1,000 CAC

Same CAC. Same business outcome. Different vendor pitches.

If your average ticket is $13,400, a $1,000 CAC means 7.5% of revenue goes to customer acquisition. That's a healthy margin. A $2,400 CAC at the same ticket means 18% — getting tight on a residential roofing P&L.

The channels worth using are the ones with the LOWEST CAC, not the lowest CPL.

Channel-by-channel CAC math

For a typical residential roofer at $13,400 average ticket. Numbers based on 2026 industry data.

Angi / HomeAdvisor (shared leads)

• Per-lead cost: $40-80
• Close rate: 3-5%
• CAC: $800-2,400

Comments: mature contractor CAC keeps rising. The structural problem is sharing 5-7 ways. Most shops at this CAC are over 15% acquisition cost on their tickets.

Modernize (shared leads)

• Per-lead cost: $30-65
• Close rate: 4-7%
• CAC: $600-1,800

Comments: modestly better than Angi but same model. Often the first stop for shops leaving Angi.

Modernize Pro (exclusive)

• Per-lead cost: $130-220
• Close rate: 15-25%
• CAC: $600-1,400

Comments: exclusive model, but per-customer cost not dramatically better. The premium per-lead price offsets the higher close rate.

Service Direct (exclusive)

• Per-lead cost: $150-280
• Close rate: 18-30%
• CAC: $500-1,500

Comments: mid-pack CAC. Better than shared marketplaces, much worse than direct or LSA.

Google LSAs

• Per-lead cost: $25-80
• Close rate: 30-50%
• CAC: $100-400

Comments: the structurally best paid-lead channel. Volume capped by search demand in your area, but per-customer economics excellent.

Direct AI prospecting (Roofbird-style)

• Effective per-lead cost: $2-8 amortized (subscription cost spread across pipeline)
• Close rate: 15-25% with door-knock follow-up
• CAC: $50-300

Comments: the cheapest channel when execution is solid. Requires field canvassing capacity.

Local SEO + Google Business Profile

• Per-lead cost: $0 (DIY) or $500-1500/mo agency
• Close rate: 40-60% on inbound organic
• CAC: $100-400 at maturity

Comments: slowest ramp (3-6 months), best long-term economics. Compounding asset.

Referral programs (with $200 incentive)

• Per-lead cost: $200 per closed referral (incentive payout)
• Close rate: 40-60% on referrals
• CAC: $50-200

Comments: cheapest channel for shops with 100+ past customers. Severely underused.

The honest CAC ranking

Channel	Typical CAC	Margin impact (on $13.4k ticket)
Referrals (with $200 incentive)	$50-200	0.4-1.5%
Direct AI prospecting	$50-300	0.4-2.2%
Google LSAs	$100-400	0.7-3%
Local SEO (mature)	$100-400	0.7-3%
Service Direct (exclusive)	$500-1,500	3.7-11%
Modernize Pro (exclusive)	$600-1,400	4.5-10%
Modernize (shared)	$600-1,800	4.5-13%
Angi/HomeAdvisor (shared)	$800-2,400	6-18%

The 16-48x spread between best and worst is what makes channel selection a margin-defining decision, not a marketing nuance.

What's a "good" CAC for residential roofing?

Industry benchmarks for a typical $13,400 ticket:

• Under 5% ($670 CAC): excellent — top quartile of residential roofers
• 5-10% ($670-1,340): healthy — most growing shops sit here
• 10-15% ($1,340-2,010): acceptable — margins getting tight but workable
• Over 15% ($2,010+): structural problem — typically too dependent on shared lead marketplaces

If your CAC is over 10%, the fix isn't negotiating better lead prices. It's switching to channels with structurally better economics.

The math nobody runs

A worked example. Say you spend $5,000/month on Angi leads. Get 100 leads at $50 each. Close 4 = $1,250 CAC per closed customer.

The "alternative channels" math:

The same $5,000/month split:

• $1,000/mo into Roofbird subscription ($199) + tools
• $4,000/mo into LSAs at $50/lead × 35% close → ~28 customers/mo
• Total closed: 28 vs Angi's 4
• CAC: $179 vs Angi's $1,250

The 7x difference in closed customers per dollar is structural. The shops doing this math reallocate budget accordingly.

The audit nobody runs

If you've never calculated CAC by channel:

Step 1: Pull 90 days of marketing spend by channel.

Step 2: Pull closed customers attributed to each channel (use your CRM data).

Step 3: Divide spend by closed customers for each channel.

Step 4: Sort highest-to-lowest CAC.

Step 5: Cut spend on the highest-CAC channel. Reallocate to lowest.

Most shops doing this audit find Angi/HomeAdvisor is dramatically more expensive than they thought. The audit pays for itself in the next month's reallocation.

What "blended CAC" should look like

If you're running a multi-channel mix, your weighted-average CAC is:

Blended CAC = Total marketing spend ÷ Total customers acquired

For a healthy mid-sized residential roofer:

• 30% direct prospecting (CAC ~$150)
• 25% LSAs (CAC ~$250)
• 20% referrals (CAC ~$150)
• 15% local SEO organic (CAC ~$200)
• 10% paid surge during storms (CAC ~$500)

Weighted-average: ~$215 CAC.

That's a 4-10x improvement over pure-Angi reliance. Achievable with 6-12 months of channel diversification.

How to drop CAC by 50% in 90 days

If you're stuck at high CAC, the 90-day playbook:

Days 1-30: Apply for Google Guaranteed (LSA prerequisite). Start a Roofbird trial. Audit your past customer list for referral program targets.

Days 31-60: LSAs go live. Direct prospecting becomes weekly habit. Send referral program email to past customers.

Days 61-90: Reduce Angi spend by 50%. Reallocate to LSAs + direct prospecting. Measure CAC by channel.

Typical outcome: CAC drops 40-60% over the 90 days as cheaper channels prove out and you cut spending on expensive ones.

What to do this week

1. Calculate your actual current CAC by channel
2. Sort by CAC — highest to lowest
3. Identify the worst channel (almost always Angi if you're on it)
4. Pick ONE cheaper channel to test for 30 days
5. Cut the worst channel's spend by 30% to fund the test

The shops who win on margins aren't the ones with the most channels. They're the ones with the LOWEST blended CAC. Channel selection is a margin lever most roofers ignore.

Roofbird's free trial lets you test direct AI prospecting against your existing channels. 25 scored leads in your service area, no card.

— Jake