When we surveyed 1,600 homeowners in 2024, we asked where they learn about home improvement products and services. Online research and referrals tied at 88%. Then came social media (66%), TV and cable (65%), direct mail (59%), streaming (52%), and radio (49%).
Most of those channels never produce a click. Nobody clicks a TV spot or a postcard. They remember your name, search for it later, and call. Platform dashboards and call-tracking numbers capture the last step and miss the rest, which is why so many home service owners can’t answer a basic question: did our marketing make more money than it cost?
This guide covers how to answer that question honestly: measure ROI on profit, know your break-even, watch your ad-to-sales ratio, account for lifetime value, and measure the channels that don’t leave a digital trail.
Measure ROI on profit, not revenue
The standard formula is:
Marketing ROI = (gross profit from marketing − marketing cost) ÷ marketing cost
Most reports quietly swap gross profit for revenue, which makes every channel look better than it is.
Here’s an example. A remodeler spends $3K on a campaign that produces three jobs worth $45K in revenue.
- On revenue: ($45K − $3K) ÷ $3K = 1,400% ROI
- On gross profit, at a 40% margin: $45K × 40% = $18K gross profit. ($18K − $3K) ÷ $3K = 500% ROI
Still a strong campaign. But 500% is the number you can actually plan around.
Know your break-even before you read any report
Vendors often report return on ad spend (ROAS): revenue divided by spend. In the example above, ROAS is $45K ÷ $3K, or 15:1. ROAS isn’t ROI, and the gap between them is your margin.
Your break-even ROAS is 1 divided by your gross margin:
- At a 40% margin, break-even is 2.5:1
- At a 30% margin, break-even is about 3.3:1
That means a vendor celebrating a 3:1 return for a business running 30% margins is reporting a loss. Every $1 of ad spend brings back $3 in revenue and 90 cents in gross profit.
Work out your break-even once, and every channel report gets easier to read.
Watch your ad-to-sales ratio
Channel-level ROI tells you which campaigns work. Your ad-to-sales ratio tells you whether marketing as a whole is working: total marketing spend divided by total revenue over the same period. A company with $10 million in revenue and $700K in marketing spend runs a 7% ratio.
Track it monthly and over rolling 12 months, and set a target based on your margins and growth goals. It catches problems channel reports miss. When Google, Meta, and your call-tracking tool each claim credit for the same customer, every channel can look profitable while the ratio climbs. The ratio doesn’t double-count.
It’s also where measurement tends to pay off. Travis Burch, owner of K-Guard Heartland, says measurement showed his team issues beyond lead generation. They cut their advertising-to-sales expense by 33% with no drop in growth.
Count lifetime value, not just the first job
Many home service customers come back for maintenance, repairs, and their next project, and they refer neighbors. Judging a channel only on the first job undervalues the channels that bring in long-term customers.
To estimate lifetime value, pull customers you acquired three or more years ago and total everything they’ve spent since. Apply your gross margin. That’s how much gross profit a typical customer produces, and it sets the ceiling on what you can afford to spend acquiring one.
Use first-job ROI to manage cash flow and lifetime ROI to decide how much to invest. Businesses that look only at the first job tend to underinvest in the channels that build repeat customers.
Measure the channels that don’t produce clicks
For digital channels, the basics still apply: call-tracking numbers by source, UTM tags on every ad link, and a lead source on every record in your CRM. For lead-level metrics like cost per customer and close rate by source, see Why Your CPL Is a Lie.
TV, streaming, radio, direct mail, and billboards need different methods.
Matchback. Compare the households you reached, such as a mailing list, against your customer records to see how many became customers. The key is a holdout group: a set of similar households you deliberately didn’t mail. The difference in purchase rates between the two groups is the sales the campaign actually caused, as opposed to sales that would have happened anyway.
Media mix modeling (MMM). A statistical model that estimates how much each channel contributed to sales, using your weekly sales and spend history alongside factors like seasonality and weather. It measures channels that never generate a click and shows where the next dollar is likely to work hardest. It works best with at least a couple of years of consistent weekly data. More on our media mix modeling page.
“How did you hear about us?” Worth asking, but treat it as a signal, not a measurement. People tend to name the last thing they remember, and with referrals named by 88% of homeowners in our survey, “a friend” often gets credit for work your advertising started.
Common mistakes
Adding up platform-reported conversions. Each platform counts the customers it touched, so the totals overlap. If the sum of your channel reports exceeds your actual new customers, you’re double-counting.
Cutting awareness channels because they don’t get last-click credit. TV and mail often create the demand that search captures. Cut them and search volume can fall a few months later, with no obvious cause in any dashboard.
Judging a new channel in its first month. Most channels need time to optimize, and awareness channels need time to build. Set the evaluation window before launch.
Using revenue ROI to set budgets. It will always tell you to spend more.
Next steps
- Find your gross margin and break-even ROAS. Write it at the top of every marketing report you read.
- Calculate your ad-to-sales ratio for the last 12 months, and set a target.
- Tag every lead with its source and connect closed jobs back to that source.
- Set up matchback with a holdout group for your next direct mail drop.
- Estimate lifetime value from customers acquired three or more years ago.
DW Creative works with homeowner-focused businesses on exactly this kind of measurement, from matchback to media mix modeling. If you want to know what your marketing is actually returning, schedule a 15-minute fit call. For more on choosing a partner, see How to Hire a Marketing Agency for Your Home Services Business.
