Google LSA vs SEO for personal injury firms: cost per signed case

For most personal injury firms, Google Local Services Ads produce signed cases sooner and SEO produces them cheaper later. LSAs bill per lead and can ring your phone this month. SEO bills a monthly retainer and pays off only once you rank and get named in AI answers. The right split depends on one number you can calculate from your own intake records: cost per signed case.

That number is the subject of this post. Platform dashboards report leads and clicks. Your managing partner cares about retainer agreements. Below is what each channel actually bills you for, the cost figures we could verify, the math that turns them into cost per signed case, and the ethics question a careful firm should ask before paying anyone per lead.

What does each channel actually charge you for?

LSAs charge per lead, search ads charge per click, and SEO charges per month. That difference decides how risk is shared between you and the vendor.

Google's help page on how Local Services leads work defines a lead as a phone call you answer or return, a message, or a booking request (bookings are US and Canada only). It also bills a missed call when it happens during your business hours and the caller stays on the line for more than 20 seconds. Google says lead prices "may vary depending on your location, the job type, the type of lead, or your bidding mode," and you can set the maximum you are willing to pay per lead. Personal injury is one of the lawyer categories Google lists as eligible on its LSA getting-started page.

Two details matter for PI intake. First, the missed-call rule means an unanswered phone at 2 p.m. costs you a lead and gets you nothing. Second, manual disputes are gone. Google moved every advertiser to automated lead credits in July 2024, saying it would "review all leads and automatically credit invalid leads," as Search Engine Roundtable reported at the time. Advertisers objected that they could no longer contest junk leads themselves. You can still flag a poor lead through the feedback survey, and Google may credit charged leads later if its models judge them low quality.

Google search ads charge per click, whether or not the click calls. SEO charges a retainer whether or not the month produces a case. Only LSAs tie the bill to a person who actually reached out.

What a lead costs: the numbers we could verify

Public, PI-specific LSA prices don't exist, because Google sets them by market and bid. The benchmarks below are the closest verified figures, and each comes with a caveat.

The search ads figures come from LocaliQ's 2026 search advertising benchmarks, built from thousands of its customers' Google and Microsoft campaigns. Attorneys and legal services had both the highest cost per click ($9.87, against a $5.42 average) and the highest cost per lead ($131.63, against $66.69). Those are averages across all legal work, not PI alone. Use them as a reference point and replace them with your own LSA and ads data as soon as you have a month of it.

The SEO figures come from Ahrefs' poll of 439 SEO providers: 78.2% bill a monthly retainer, the average is $2,917 a month, and $501 to $1,000 is the single most common band. The poll isn't legal-specific. A PI firm in a large metro competing against firms with years of content and links should expect to sit above the average, not at it.

How do you turn cost per lead into cost per signed case?

Divide cost per lead by your lead-to-signed rate. The rate is yours alone, and it moves the answer more than any platform setting.

If you sign one in ten leads, your cost per signed case is ten times your cost per lead. If you sign one in twenty, it doubles. Here is the math using the LocaliQ legal average as an illustrative starting price. The signing rates are illustrative, not benchmarks: pull your own from your intake software.

For SEO the formula is the same, with the retainer as the cost. For example, a firm paying a $3,000 monthly retainer that signs three cases a month from organic search pays $1,000 per signed case. The same firm in month two, with no organic cases yet, has an undefined cost per case and a growing investment. That is the honest trade: LSA cost per case is measurable from week one, while SEO cost per case starts high and falls as rankings and citations build.

The lever both channels share is intake. An LSA lead that reaches voicemail is billed and wasted. An organic caller who waits on hold calls the next firm. Before comparing channels, check how fast your team answers, how quickly web forms get a call back, and what happens after hours. A firm that signs one in five pays half the cost per case of a firm that signs one in ten, on the same leads.

Where SEO wins, and where AI answers change the math

SEO wins on cost per case over time and on everything LSAs can't reach. AI answers are now part of SEO, because more searches end on the results page.

LSAs sit at the top of local, hire-now searches. They don't help when a prospective client researches first: "how long does a car accident settlement take," "do I need a lawyer for a minor accident," "what is my case worth." Those questions are where trust starts, and a practice page that answers them is how an injured person meets your firm before they are ready to call.

The catch is that fewer of those searches send a click. Pew Research Center tracked 900 US adults in March 2025 and found they clicked a traditional search result on 8% of visits when Google showed an AI summary, against 15% when it didn't. Links inside the summary got clicked on about 1% of visits. Question-style searches, the kind PI clients type, were the most likely to trigger a summary.

So SEO for a PI firm in 2026 has two goals: rank, and be the firm the answer names. That means practice pages that lead with a direct answer, consistent directory profiles, reviews that describe the case type, and third-party mentions. Our post on how law firms get recommended by ChatGPT walks through those signals. None of it shows up in an LSA dashboard, and all of it compounds.

Is paying Google per lead allowed under the ethics rules?

Generally yes, because paying for advertising is permitted. The line is whether the vendor recommends you, so read your own state's version of Rule 7.2.

Rule 7.2 bars giving anything of value for recommending a lawyer, with exceptions that include the reasonable cost of advertising. Comment 5 says a communication recommends a lawyer if it "endorses or vouches for" the lawyer's credentials or qualities. The Illinois State Bar Association's Opinion 22-02 (May 2022) applied that test to a paid matching service. It found participation can comply where matching is automated, the service doesn't endorse or vouch for the lawyer, it stays out of the attorney-client relationship, and the fees are reasonable and not tied to the work the lawyer does for the client. That opinion addressed a matching service, not LSAs, and it binds only Illinois. It is still a useful checklist for any pay-per-lead channel.

Two more points for PI firms. Everything in your ad, including the business name, hours and any review you highlight, is your communication under Rule 7.1, so it can't be misleading. And many states restrict calling yourself a "specialist" or "expert" without certification. If you are unsure, call your state bar's ethics hotline before you launch, not after a grievance.

Which should a PI firm fund first?

Fund LSAs first if your intake can answer every call during the hours you set. Fund SEO first if it can't, or if your market's lead prices already exceed what a signed case is worth to you.

For most firms the answer is both, in sequence. LSAs produce cases while SEO builds, and the LSA data tells you which case types and neighborhoods convert, which tells your SEO work where to focus. Revisit the split every quarter using cost per signed case by channel from your intake records. Use your closed-file fees too, not just signed counts: a channel that signs fewer cases with higher fees can still win.

How to check where you stand this week

Run three checks. Pull the last 90 days of leads by source and divide spend by signed retainer agreements for each one. Call your own LSA number at 2 p.m. and at 7 p.m. and note what happens. Then ask ChatGPT and Google, in your city, the question an injured person would ask: "best car accident lawyer near me." Write down which firms are named and which sources are cited.

If you want that last check done properly, our free AI visibility audit tests your real practice-area questions across the major AI engines and shows which firms get named instead of you, and why. More on how we work with firms is on our law firms page.

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