Legal advertising runs on some of the highest cost-per-click numbers in Google Ads -- personal injury and family law keywords routinely exceed $50-100 per click in competitive metro markets. Dynamic Search Ads have quietly absorbed a meaningful share of that spend for years, matching practice-area pages to search queries without a manual keyword list. With DSA retiring in February 2027, law firms running high-CPC campaigns have more to lose per mismatched click than almost any other vertical.
Why Law Firms Used DSA Differently Than Most Advertisers
A multi-practice firm's site typically has separate pages for each practice area and sometimes each office location: car accident attorney, divorce lawyer, DUI defense, workers' compensation, by city or county. DSA crawled these pages and matched them to long-tail query variations -- "rear-ended by uninsured driver lawyer," "contested custody attorney near me" -- that a manual keyword list would rarely anticipate in full.
AI Max for Search replaces that crawl-based matching with search themes: intent categories defined in advance rather than pages the system discovers on its own. For a firm with a large practice-area page structure, this is a bigger operational shift than the campaign-type rename it looks like.
The Cost of Getting This Wrong Is Higher Here
In most verticals, a mismatched click costs a few dollars. In legal advertising, a single wasted click on a $60 CPA campaign is real money, and mismatches compound fast across a page structure with a dozen practice areas.
Two failure modes show up repeatedly during DSA-to-AI-Max migrations for legal accounts:
Practice area bleed. Search themes defined too broadly let a family law campaign start matching criminal defense queries, or a personal injury campaign start matching workers' comp queries that should route to a different landing page and different intake process. Define themes narrowly enough that each one maps to a single practice area and a single intended landing page.
Missed jurisdiction signals. Firms operating across county or state lines often relied on DSA's page-crawl to implicitly handle jurisdiction matching (a page for "Cook County DUI attorney" naturally attracted Cook County-specific queries). Search themes need jurisdiction and location built in explicitly, or the AI will not infer it from page structure the way DSA did.
Negative Keywords Matter More for Regulated Practice Areas
Legal accounts already fight significant query pollution: "free legal advice," "how to file for divorce myself," "public defender," and job-seeker searches for paralegal or attorney positions. DSA's broad matching let some of this through. AI Max handles negatives more reliably, but the exclusion list has to be built before launch.
For regulated practice areas -- workers' compensation, immigration, certain injury categories -- getting negative keywords wrong is not just wasted spend. It can mean intake staff spending time on leads that were never going to convert because the underlying query signaled a DIY or non-qualifying case.
Full breakdown of negative keyword setup and brand exclusions in AI Max: https://yositeup.com/blog/ai-max-negative-keywords-brand-exclusions-2026
Migration Sequence for Multi-Practice Firms
Export DSA auto-target performance by practice area and by office location if the firm has multiple. Identify which auto-targets actually drive qualified intake calls, not just clicks.
Build one search theme cluster per practice area, with jurisdiction and intent embedded in the theme definition rather than left implicit.
Build the negative keyword list before launch, prioritizing terms tied to non-qualifying or DIY search intent for each practice area.
Run AI Max in parallel with DSA for a full billing cycle before reallocating budget away from DSA. Compare cost per qualified lead, not just cost per click, since click quality is what actually matters for a firm's intake pipeline.
Timing Considerations
Personal injury demand often spikes around holidays and summer travel periods; family law inquiries can spike in January. If a firm's highest-value season falls during a migration window, run the parallel-testing phase early enough that AI Max's 2-4 week learning period is already behind it before that season starts.
Complete DSA to AI Max migration timeline and pre-migration checklist: https://yositeup.com/blog/google-ads-dsa-ai-max-migration-february-2027
Budget Context
Legal marketing budgets are typically managed either in-house or through specialized agencies, and PPC management fees vary widely. Before adding AI Max migration work to an existing engagement, it is worth benchmarking what local SEO and PPC management should actually cost in 2026: https://yositeup.com/en-us/blog/local-seo-pricing-guide-2026
The Practical Bottom Line
DSA's crawl-based matching quietly handled practice-area and jurisdiction targeting that law firms never had to define explicitly. AI Max requires that definition work upfront, and with legal CPCs among the highest in Google Ads, the cost of a rushed or automatic migration in February 2027 is higher here than in almost any other vertical.
Top comments (0)