Google AI Max Auto-Upgrade: Contractor Audit Guide

The Google AI Max auto-upgrade is moving eligible Search campaigns into AI Max between September 1 and September 30, 2026. The affected campaigns use campaign-level broad match or standalone automatically created assets. Contractors should verify the live settings, record a baseline, and judge the change by qualified leads, booked jobs, and gross profit instead of Google's conversion count alone.

Google's August 12 developer notice confirms the progressive September migration. It also corrects a common mistake: Dynamic Search Ads are not being auto-migrated this month. Google moved that step to February 2027.

What Changed With the Google AI Max Auto-Upgrade?

AI Max is an optimization layer inside an existing Search campaign, not a separate campaign type. Google groups search term matching, text customization, and final URL expansion under one umbrella. The September migration changes campaigns in place when they still use one of two older settings.

The distinction matters because older articles and some current posts still say DSA campaigns are moving in September. Google's updated product announcement says the DSA sunset begins in February 2027. Treat the later dated migration notice as the source of truth.

Which AI Max Settings Turn On During Migration?

The defaults are not the same for both September cohorts. A campaign migrated because of campaign-level broad match receives search term matching, while text customization and final URL expansion remain off. A campaign migrated because of standalone automatically created assets receives search term matching and text customization, while final URL expansion remains off.

Google's generic AI Max help page says manually enabling the full suite turns on text customization and final URL expansion. That is not the same as the cohort-specific September mapping. Verify the live campaign instead of assuming every AI Max component is active.

What remains unclear

Google's public migration table does not clearly resolve every overlap case, such as a campaign that used both legacy settings. A detailed independent review by Choice OMG flags that overlap as an open question. If the live account does not match the expected mapping, document the campaign and ask Google support for a written explanation before making a broad change.

Why Does the AI Max Migration Matter to Contractors?

Home-service Search campaigns often have expensive clicks, tight service areas, and low conversion volume. Wider query matching can find useful demand, but it can also find research traffic, job seekers, vendors, DIY searches, and out-of-area calls. Text customization adds another risk when landing pages contain outdated promotions or claims you would not approve in an ad.

Practitioner reports are mixed and mostly observational. One recent r/PPC account report claimed a much larger query set after AI Max was enabled, but that single account does not prove the same outcome will occur elsewhere. A 19-account audit found that the number of campaigns truly exposed to the forced path was much smaller after removing paused or already-migrated campaigns. Audit your own account before accepting either the panic or the sales pitch.

If a campaign is already marked Limited by budget, Google's help page warns AI Max may be less effective. Our Limited by budget contractor guide explains why the bid target and closed-job economics should be fixed before adding reach.

How Should Contractors Audit the AI Max Auto-Upgrade?

How Do You Measure Whether AI Max Works?

Start with the business funnel, not the Google Ads dashboard. Count distinct contacts, qualified leads, booked appointments, held appointments, sold jobs, revenue, and gross profit. Then calculate cost per qualified lead, cost per booked job, and cost per sold job. Keep spam, duplicates, applicants, and out-of-area inquiries visible as their own categories.

A lower platform cost per conversion can hide worse economics if AI Max finds cheaper but weaker inquiries. The opposite can also happen: a higher cost per lead can still be profitable if close rate and job value improve. Give the campaign enough time to cover the normal sales cycle, but do not wait through obvious geographic leakage or broken lead routing.

The existing Google AI Mode ads guide covers a separate question: whether standard exact and phrase match campaigns can serve in AI Mode. Do not enable AI Max merely to chase that placement. Use the migration audit to decide whether its broader controls improve profitable booked work.

Google AI Max Auto-Upgrade FAQ