A midrange bathroom remodel averages $26,138 nationally, according to Zonda's 2025 Cost vs. Value report. Put that number in front of most contractors and a $40 click starts to look like a rounding error. Forty bucks to win a twenty-six-thousand-dollar job? Sign me up.
That's the math that empties ad budgets. The click isn't paid out of the $26,138. Most of that money was spoken for before the homeowner ever searched: lumber, tile, the plumber, the tile setter, the dumpster, your crew's wages. The National Association of Home Builders' study of remodelers' finances puts it plainly. The average remodeler spends 70.1% of revenue on the job itself and another 23.6% on overhead, and keeps 6.3% as net profit.
This chapter prices a click the way a remodeler prices a job: from what's actually left. It runs the chain that connects an ad click to a signed contract, backward, from your margin to the most a click can cost. The national averages here are a starting point. Your own margins, close rate and job sizes replace every one of them, and the chapter shows you where each number comes from in your own business.
A $26,138 Bathroom Leaves About $7,800 to Pay for Overhead, Profit and the Ads.
NAHB's Remodelers' Cost of Doing Business study covers fiscal 2024. The average remodeler in it brought in $2.7 million in revenue. Of each dollar:
- 70.1 cents went to cost of sales: labor, materials, trade contractors.
- 23.6 cents went to operating expenses: indirect construction costs, finance, sales and marketing, general and administrative costs and the owner's pay.
- 6.3 cents stayed as net profit.
The first number is the one that matters for advertising. What's left after the job is paid for, 29.9 cents on the dollar, is the gross margin. Everything else in the business, the ads included, comes out of it.
Run the average remodeler's percentages on that $26,138 bathroom (our arithmetic, not a figure from either source) and the job keeps about $7,815 in gross margin and about $1,647 in net profit. A midrange major kitchen at $82,793 keeps about $24,755 in gross margin. A $52,012 basement keeps about $15,552.
Those are averages across companies of every size and specialty. If you know your own gross margin by project type, use it. A design-build firm with a 35% margin on kitchens has a very different ceiling from a bath specialist working at 25%.
The Signed Job Sets the Ceiling on What a Click Can Cost.
Every Google Ads budget we build for a contractor starts from the same chain:
cost per click, then conversion rate, then cost per lead, then booking rate, then cost per booked estimate, then close rate, then cost per signed job, compared with what the job is worth.
Run it forward and you find out what a job costs you. Run it backward and you find out what you can afford. Backward is the one to do before you spend anything.
Here it is for the bathroom. Every assumption below is an illustration, there to show the math, not an industry rate.
- Start with what you'll spend to win the job. The Qualified Remodeler Top 500's full-service firms spent an average of 5.4% of remodeling revenue on marketing in its 2026 report, and the median firm spent 2%. At 5.4%, the bathroom can spend about $1,411 to win itself.
- Divide by the close rate. Say you sign one in four homeowners you visit. Each booked estimate can cost about $353.
- Divide by the booking rate. Say one in three leads books an estimate. Each lead can cost about $118.
- Multiply by the conversion rate. LocaliQ's 2025 search ad benchmarks for home services put general contractors at 2.61% of clicks turning into leads. At that rate, a click can cost about $3.07.
Now change one number. Win a third of your estimates rather than a quarter, and that bathroom can now afford about $4.09 per click. Sign one in five and it drops to about $2.46. Same bathroom, same ads, same booking rate. The best of those three ceilings is two thirds higher than the worst, and only the close rate changed.
Run the same chain on the $82,793 midrange kitchen, with the same illustrative rates, and the job can spend about $4,471 to win itself, a booked estimate about $1,118, a lead about $373 and a click about $9.72. The kitchen can afford three times the click the bathroom can. That's the first reason kitchens and baths never share an ad group or a bid in the accounts we build. Chapter 7 sets those bids by hand, one project at a time.
Here's what makes that uncomfortable. LocaliQ's average click for general contractors was $5.31, and the bath remodel searches in our example market, Raleigh-Durham, carry top-of-page ranges reaching $60. At these illustrative rates, the average bathroom can't afford the average click. That isn't a reason to skip Google Ads. It's a reason to know your numbers before you set a bid, and to fix the ones you control.
A note on those outside numbers. LocaliQ's click cost, conversion rate and cost per lead ($165.67 for general contractors) are three separate averages, and they won't multiply into one another. The Qualified Remodeler survey puts the median cost per issued lead across its Top 500 at $372, and at $250 among full-service firms. Those firms are bigger than most, and the survey measures something different from LocaliQ. Use them as yardsticks, not targets.
What we couldn't find anywhere: a published close rate for residential contractors, or a measured length of time from first call to signed contract. Plenty of people quote them. Nobody we read had measured them. Your own CRM is the only honest source, and it's exactly what Chapter 1's tracking is built to give you.
Before you set a single bid, pull three numbers from your own records for each project type you advertise:
- Gross margin, from your job costing, not the industry average.
- Close rate, signed contracts divided by estimates you actually showed up for, over the last year.
- Booking rate, estimates booked divided by calls and forms that came in.
If you don't know them yet, that's normal for a new account, and it's exactly what the first months of tracking are for. Start with conservative guesses, write them down, and replace each one as your own data comes in.
The Estimate Nobody Shows Up For Is the Most Expensive Lead You'll Buy.
Look at that worksheet again. The click price is set by Google's auction. The conversion rate is mostly your website. But the close rate and the booking rate are you: how fast the phone gets answered, whether the estimate happens when you said it would, whether the quote arrives.
We read 121 one- and two-star Google reviews of residential construction jobs in the example market. In 36 of them, the job never started. Ten homeowners described a contractor who didn't show up for the estimate. Eight said the quote never came after the visit. Eight never got a call back. Eight more were told the job was too small, and others described a rushed visit or being ignored in a showroom.
Every one of those was a lead someone paid for. When a booked estimate turns into a no-show, the cost of every signed job climbs, because the same ad spend now has to cover fewer contracts.
That's why the cheapest way to raise your click ceiling usually isn't in Google Ads at all. Answer the phone faster, confirm the appointment, send the quote when you said you would. Lift the bathroom close rate from a fifth of estimates to a third and its click ceiling climbs from roughly $2.46 to $4.09, and nobody touched the bids.
Big Remodelers Get Almost Half Their Leads From Referrals and Past Clients.
The worksheet prices a click on the first job. Most remodeling clients are worth more than that.
The Qualified Remodeler survey asked its Top 500 firms where their leads came from. Among full-service remodelers, referrals produced an average of 23% of leads and repeat business another 22.8%, while company websites supplied 11.9%. Together, those three sources made up nearly 58% of reported opportunities. Design-build firms in the same survey reported 23.1% from referrals, 18.5% from repeat clients and 18% from their websites. These are large, established companies answering a vendor survey, so treat the numbers as a picture of where a mature remodeling business ends up, not as a promise.
That's the lifetime value of a homeowner you win from an ad: the bathroom now, the kitchen in a few years, and the neighbor who asks who did the work. Reviews feed the same loop. In our example-market sample, 152 four- and five-star reviews praised communication, 78 praised being on time and 54 praised a clean job site, the same things the one-star reviews complained about.
Here's how we use it. Price clicks on the first job, using the worksheet above. Treat repeat and referral work as your margin of safety, not as a reason to bid higher on day one. The first number is one you can measure within months. The second takes years to show up in your books.
Between the click and the phone call sits one more lever a contractor owns outright: the landing page. Give every project type its own page, so a homeowner who searched for a basement lands on your basements, with your basement photos and your basement process. A general "services" page makes the conversion rate in that worksheet harder to earn. Chapter 4 picks up exactly that.
If you'd rather have this math built into an account from day one, our Google Ads management starts every contractor engagement with it.
Next: A Kitchen Ad Earns Its Spot on a Kitchen Search.
Chapter 4 looks at how Google decides whose ad shows and what it costs, why a vague search like "general contractor" pulls in commercial directories and job seekers, and why an ad group built around one project wins the homeowner who typed it.
This chapter is part of Google Ads for Contractors, our sixteen-chapter guide for residential general contractors and construction companies anywhere in the US.
