Google Ads puts your business in front of homeowners the moment they're searching. Not weeks later when a referral comes through. For residential GCs, it's one of the fastest ways to generate a steady flow of qualified calls, but it's also one channel in a broader mix. If you're still figuring out where Google Ads fits alongside your other lead sources, start there first.
All of that to say, contractors are losing because of a few very fixable mistakes.
Run the math before you spend anything
You need one number before you open Google Ads: your maximum cost per lead.
Average job value × close rate × net margin = profit per lead.
Target a cost per lead equal to 10–15% of that number.
- Example: For a $35,000 kitchen remodel closed at 20% with a 25% margin, your healthy ceiling is around $175–$260.
- PRO TIP: If you're not sure where your margins land, this guide to setting your first markup walks through how to build a number that protects your bottom line before you spend anything on ads.
LocaliQ says the average cost per lead for contractors on Google Ads is $165.67. Most residential remodeling jobs make that math work but only if your follow-up is fast.
- Example: Consider a $40,000 kitchen remodel. If 1 in 5 paid leads converts to a signed contract, you are paying roughly $830 in ad spend to close a $40K job.
The four mistakes that drain contractor ad budgets
- One campaign for everything. Kitchen remodels, bathroom remodels, and home additions belong in separate campaigns. Different services, different homeowners, different intent.
- Wrong keywords. "Kitchen remodeler near me" is a buyer. "How much does a kitchen remodel cost" is a researcher. PPC budgets are for buyers. The same logic applies to how you qualify leads once they come in — not every inquiry is worth chasing.
- No negative keywords. Without them, your remodel ad fires on searches like "kitchen remodeler jobs." That click costs the same. It's worth nothing.
- Sending clicks to the homepage. A dedicated landing page converts paid traffic at 6–10%. A homepage converts it at 2–3%. On a $1,500 monthly budget, that's the difference between 3 leads and 15. If your site isn't built to convert, here's how to fix that before you spend on ads.
The number that actually determines your ROI
Contractors who respond to a lead within 24 hours have a 30% higher win rate than those who take longer. This pattern has held consistent across service businesses for years.
At $165 a lead, a two-day follow-up isn't a minor inconvenience. It's the reason your campaign isn't paying for itself. AI estimating tools are how the fastest contractors close that gap. You’ll be able to send a professional estimate the same day a homeowner reaches out, before a competitor picks up the phone.
And no. It’s not too good to be true.
