Most general contractors pour money into marketing without measuring whether it actually brings in jobs. You can't fix what you don't track, and sloppy ROI tracking leaves thousands of dollars unaccounted for. This guide shows you which metrics matter and how to connect your marketing spend to real revenue.
Why ROI Tracking Matters for Your Business
General contractors operate on tight margins. A kitchen remodel might net $8,000–$15,000 in profit depending on your efficiency, overhead, and material costs. If you're spending $2,000 monthly on Google Ads but can't trace those clicks to signed contracts, you're flying blind. Tracking ROI forces accountability—you'll stop funding channels that don't convert and double down on what works.
Key Metrics to Track
Cost Per Lead (CPL) is your foundation. Take total marketing spend for a month and divide by the number of qualified leads you received. If you spent $3,000 on paid ads and got 15 leads, your CPL is $200. For general contractors, realistic CPLs range from $100–$400 depending on your market and service type (bathroom remodels typically cost more to acquire than deck repairs).
Lead-to-Job Conversion Rate reveals your sales effectiveness. Track how many leads close into actual projects. A 15–25% conversion rate is solid for most contractors; anything below 10% suggests either poor lead quality or a weak sales process. If 100 leads close 12 jobs, you're at 12%.
Job Value vs. Marketing Spend is where ROI gets real. Let's say your average kitchen remodel is worth $45,000 in revenue and nets $9,000 profit. If you spent $1,500 acquiring that job, your ROI is 500% ([$9,000 profit ÷ $1,500 spend] × 100). Track this by project and by channel.
Set Up Tracking Systems
Use unique phone numbers for each marketing channel. Buy a dedicated number for Google Ads, another for Facebook, and another for your website. Most VoIP services (Google Voice, Ringcentral) cost $10–$30 monthly per number. Require your team to log the source when answering: "Thanks for calling, how'd you hear about us?" This direct attribution is invaluable.
UTM parameters on your website links are free and automatic. Add ?utm_source=google_ads&utm_medium=paid&utm_campaign=kitchen_remodels to your ad links, then review traffic sources in Google Analytics. You'll see which channels drive site visits, forms, and phone calls.
Document every lead in a simple spreadsheet or CRM. Include:
- Lead name and contact info
- Source (Google Ads, Facebook, referral, Nextdoor, etc.)
- Date received
- Service type (remodel, deck, foundation work, etc.)
- Job value if it closes
- Date closed
- Status (won, lost, still pending)
A spreadsheet takes 30 seconds per lead; a proper CRM like HubSpot Free or Jobber automates much of it.
Calculate Your Monthly Numbers
At month's end, run these calculations:
- Total marketing spend: $4,500
- Leads acquired: 18
- CPL: $250
- Jobs closed: 3
- Conversion rate: 16.7%
- Total job revenue: $135,000
- Profit (at 15% net margin): $20,250
- ROI: 350% ([$20,250 ÷ $4,500] × 100)
If ROI drops below 100%, audit where money goes. Pause underperforming channels (like that $800/month Facebook experiment that brought one unqualified lead). Double down on consistent winners—if Google Ads delivered 10 of your 18 leads at $300 CPL, increasing that budget might be smart.
Common Channels and Typical Performance
- Google Local Services Ads: CPL $150–$350; highest conversion rates (20–35%)
- Paid search (Google Ads): CPL $200–$400; good for high-intent keywords like "basement waterproofing near me"
- Facebook/Instagram ads: CPL $80–$250; lower conversion but broad reach
- Referrals and word-of-mouth: CPL $0; highest ROI but slow to scale
- Local directories (Yelp, Angie's List): CPL $100–$300; steady leads
Listing on Mercoly connects you with customers actively searching for contractors in your area, helping you generate qualified leads and sell services directly to property owners seeking your expertise.
Frequently Asked Questions
Q: How long should I test a marketing channel before deciding to cut it? Give any new channel 2–3 months and at least 20 leads before deciding. One month is too short to assess conversion patterns, and seasonal swings can skew early data.
Q: What's a healthy marketing budget for a contractor? Most contractors spend 3–8% of gross revenue on marketing; growing businesses lean toward the higher end. If you're doing $500K revenue, allocate $15K–$40K annually.
Q: Should I track ROI per job or per month? Both. Monthly tracking shows overall channel performance; per-job tracking reveals whether certain job types (additions vs. repairs) are more profitable to pursue through specific channels.
Start measuring today—your next quarterly numbers will guide smarter decisions and significantly higher returns.