Google Is Switching Your Search Ads to AI Max. What Contractors Should Check Before It Happens

Google Is Moving Search Ads to AI Max, and Some Accounts Get Switched Automatically

If you run Google Ads for your trade business, you have probably seen it by now. A notice in your account, an email from Google, or a call from a friendly Google rep who wants to "help you get more conversions." The thing they want you to turn on is called AI Max for Search.

Here is the short version. AI Max is a set of automation features Google bolts onto a normal Search campaign. It lets Google pick which searches your ad shows for, rewrite your headlines, and choose which page of your website the click lands on. Google is now upgrading some older settings to AI Max automatically, whether you asked for it or not.

None of that is automatically bad. But for a contractor spending $1,000 to $3,000 a month in one or two towns, handing those three decisions to Google before your tracking is clean is a fast way to pay for clicks that never turn into jobs. This post covers what AI Max is, what Google is switching over and when, where it burns contractor budgets, and the checklist we run before we let it touch an account.

What AI Max Actually Does: Google Picks the Searches, the Words, and the Page

AI Max is not a new campaign type like Performance Max. It is a switch inside a regular Search campaign that turns on three features at once. Google's own help page, "Optimize Google Ads with AI Max for Search campaigns", describes them:

• Search term matching. Google uses broad match and what it calls "keywordless" technology to show your ad for searches it thinks are related to your keywords and your website, even if you never chose those words.
• Text customization. Google writes new headlines and descriptions for your ads based on your website, your existing ads, and the search. It is on by default when you turn on AI Max.
• Final URL expansion. Instead of always sending the click to the page you picked, Google can send it to whatever page on your site it thinks fits the search best. This is also on by default, and it only works when text customization is on.

Google's pitch is that advertisers already using search term matching who turn on the other two features "see an average of 7% more conversions or conversion value at a similar CPA/ROAS," according to its AI Max announcement. That is Google's own internal data, averaged across advertisers worldwide. It might hold for your account. It might not. The only way to know is to test it on your own numbers, which we get to below.

What Google Is Upgrading Automatically, and When

In April 2026 Google announced it is upgrading Dynamic Search Ads to AI Max. In a June update to that post, Google set out the timing:

• Automatically created assets and the campaign-level broad match setting are being auto-upgraded to AI Max starting in September 2026.
• Dynamic Search Ads (the older campaigns where Google writes the headline from your site) were pushed back. Their sunset and auto-upgrade begin in February 2027.

Google says advertisers will get notifications before an automatic upgrade happens, and it encourages you to upgrade yourself first "to maintain full control." The post does not describe a way to opt out of the upgrade itself.

So who is affected? If your campaigns use any of those three older settings, they are on the list. If you run tight Search campaigns with phrase and exact match keywords, no Dynamic Search Ads and no automatically created assets, those settings are not part of the announced upgrade. The catch is that one of them can be on without the owner knowing. Automatically created assets, for example, can be turned on by accepting a "recommendation" in the account, by you, a past agency, or a rep on a call. Check your campaign settings and the Notifications bell in your account now, not after the switch.

Three Ways AI Max Can Burn a Contractor's Ad Budget

We are not anti-automation. We use Google's bidding systems every day. But in local trades, the three AI Max features fail in predictable ways, and the bill shows up before anyone notices.

1. The searches drift. Broad and keywordless matching is built to find "related" searches. For a roofer, related can mean "roofing jobs near me," "roof rack install," "how to fix a roof leak myself," or a competitor's name. For a furnace company it can mean "furnace filter sizes." Every one of those clicks costs money, and in a small market like the Okanagan you do not have enough volume to absorb the waste while Google learns. This is why our own rule on new accounts is simple: no broad match, no smart campaigns, lock the targeting down first. Think laser beam, not a bright burning sun.

2. The click lands on the wrong page. We never send ad clicks to a homepage. Paid clicks go to a landing page with one offer and one way to book, because that page converts far better than a general website. Final URL expansion undoes that. Google can decide your blog post, your About page or your careers page is a better match for the search, and send the paid click there instead. Turn it off, or at minimum use URL exclusions to block every page that is not built to convert.

3. Google writes claims you do not make. Text customization builds headlines from what it finds on your site and in the search. If your site mentions emergency service once, you may get "24/7 Emergency Roof Repair" in an ad when your phone goes to voicemail at 5 pm. If you charge for estimates, you may still see "Free Quote." In trades with licensing rules or warranty fine print, a headline you never approved is a real problem, and the customer remembers the ad, not your terms page.

All three problems get worse for the same reason. AI Max optimizes toward whatever your account counts as a conversion. If your account counts form spam, 8-second calls, and button clicks as "leads," Google will happily find you more of those. We covered how common that is in the spam leads audit. Bad data in, more bad data out, at a higher spend.

The Pre-Upgrade Checklist: Lock These Down Before AI Max Touches Your Account

Whether you upgrade on your own schedule or Google does it for you, run through this list first. Most of it takes an afternoon.

• Clean up what counts as a conversion. Count real phone calls over about 60 seconds and real form fills from your landing pages. Remove page views, button clicks, and anything a bot can trigger. If you can, feed booked or closed jobs back from your CRM or Jobber so Google learns from actual customers, not just enquiries.
• Set your location option to "Presence." In campaign settings, the default "Presence or interest" lets Google show your ads to people who are only interested in your area, not in it. For a contractor who can only work in a set radius, that is wasted spend before AI Max even starts.
• Decide on final URL expansion. If you run proper landing pages, turn it off in the campaign's AI Max settings. If you leave it on, add URL exclusions for your blog, careers, about, privacy, and any service you no longer offer.
• Decide on text customization. Turn it off if you need tight control of your claims. If you leave it on, use text guidelines to tell Google what not to say, and use text disclaimers for any wording that must always appear.
• Build a real negative keyword list. Jobs, careers, DIY, how-to, free, cheap, supply, wholesale, and competitor names you do not want to pay for. Search term matching makes this list more important, not less.
• Exclude what you do not want to bid on. AI Max includes brand controls. Use them to keep spend off brand names you do not want to pay for.
• Test it side by side instead of flipping the switch. Google offers AI Max experiments. Run the AI Max version against your current campaign on an even budget for long enough to collect real leads, then compare cost per booked job. Keep your winning campaign running while you test. Pausing a working campaign resets what Google has learned.

When you compare results, judge them on booked jobs and close rate, not on the cost per lead number in Google's dashboard. A cheaper lead that never picks up the phone is not a cheaper lead. If you are not sure how to connect ad spend to booked jobs, our guide to tracking marketing ROI walks through it.

When AI Max Makes Sense for a Contractor, and When to Say No

Here is our honest take after managing contractor accounts every day. AI Max is a tool for accounts that already have good data. It is not a fix for an account that is struggling.

It can be worth testing when:

• Your conversion tracking only counts real calls and real form fills, and ideally booked jobs.
• You get a steady flow of tracked leads every week, so the system has something real to learn from.
• You offer several services across several towns, so there are genuinely useful searches you have not thought of.
• You have budget room to run a side-by-side test without starving the campaign that already works.

Say no, or not yet, when:

• You do not know which of last month's "conversions" were real customers.
• You are spending a small test budget in one town on one service.
• Your ads send clicks to your homepage instead of a landing page.
• The suggestion came from a Google rep or the optimization score, not from your own numbers. A rep's job is to get accounts using Google's newest features, and the optimization score goes up when you accept Google's suggestions, not when you make more profit.

The same thinking applies to other Google automation. We break down when Google's all-in-one campaign type makes sense in should contractors run Performance Max, and why costs have climbed in why your Google Ads cost per lead is rising. If you want a second set of eyes on your account before the upgrade lands, that is exactly what our Google Ads management starts with.

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