We don’t do PPC. So when I tell you how to think about the SEO-versus-PPC decision for your firm, you should know that upfront — and you should also know that the honest answer sometimes is “PPC will get you a case faster than we can.” This page is the framework for figuring out which channel is the right call for your firm, in plain English, with the trade-offs spelled out.
The TL;DR is that these are two fundamentally different ways of buying the same thing — visibility in front of a prospect at the moment they search. PPC rents the visibility. SEO builds it. Each has conditions where it wins. Most firms should be doing some of both, but the right mix depends on six or seven specific factors about your firm and your market.
The mechanical difference
PPC — pay-per-click — means Google Ads, the sponsored placements at the top and bottom of the search results page. You bid on keywords. When someone searches your keyword, your ad shows. If they click, you pay. The bid for legal queries is high — DUI keywords in major markets routinely cost $60 to $150 per click. Personal injury keywords in competitive markets push past $300 per click in some cases. You pay per click whether the click converts or not.
SEO — search engine optimization — means earning the unpaid, “organic” placements below the ads. You don’t pay per click. You pay (in time, in money, or in agency retainers) to make your site rank for those queries. Once you rank, the clicks are free in the sense that you don’t pay Google for them. They are not free in the sense that you had to pay to get there and have to keep paying to defend the position.
The local pack — the three-firm box with the map that shows up for most legal queries — is technically a separate surface. It is influenced by organic SEO factors (citations, reviews, GBP optimization) and by paid factors (Local Service Ads, which we’ll come to). For most legal queries, the local pack is the highest-converting surface on the page.
Cost-per-case in each channel
Forget cost-per-click. The only number that matters for a law firm is cost-per-signed-case from a given channel. Two firms with identical click costs can have wildly different cost-per-case numbers because their landing pages, intake, and follow-up are different.
Rough ranges I’ve seen in the Phoenix market and in firms I’ve worked with elsewhere, fully aware that ranges are imprecise:
- PPC cost-per-signed-case for personal injury in a competitive metro: $800 to $4,000+. The high end is firms with weak intake or poor landing pages burning through clicks. The low end is firms with sharp intake teams and lean ad accounts.
- PPC cost-per-signed-case for criminal defense (DUI especially): $400 to $2,000. Generally lower than PI because the case value is lower and the buyer intent is sharper.
- PPC cost-per-signed-case for family law: $300 to $1,500. Often the best PPC math in the legal vertical because click costs are moderate and the decision cycle is short.
- SEO cost-per-signed-case at steady state: $150 to $900, depending on retainer size and case volume. Looks great until you remember the steady state took 6–12 months of paying without proportional return to reach.
- Local Service Ads (Google Screened) cost-per-signed-case: $200 to $1,200. Pay-per-lead, not per click — meaningfully different economics.
Two caveats. First, the SEO number assumes you’ve actually gotten to steady state. Most firms paying for SEO without seeing meaningful organic traffic are at infinity-cost-per-case because the denominator is zero. Second, these are ranges I’ve observed, not benchmarks. Your firm’s numbers will be your firm’s numbers.
Time-to-first-case
This is the dimension where the two channels are most different and where most firms make the wrong call.
PPC is essentially a faucet. You turn it on at noon on Monday with a reasonable budget and a tolerable landing page, and you can have a qualified phone call by Tuesday afternoon. The cycle from “the firm decides to do this” to “the firm gets a case” is usually one to four weeks for PPC.
SEO is a building project. Even the most aggressive, well-executed legal SEO program rarely produces a first net-new organic case in under sixty days. Most produce the first attributable case at month three to month five. Steady-state volume happens at month seven to twelve. The page on how long legal SEO takes walks through the cadence in detail.
The implication is simple: if your firm needs cases this quarter to pay payroll, PPC is the answer. SEO is not. Any agency that tells you SEO will produce a case in thirty days is selling you something. The honest version is: SEO is the right call when you have ninety days of runway to wait for it to start producing.
Defensibility — what happens when you stop spending
This is the dimension where SEO wins decisively, and it is the dimension most firms underweight when they do the math.
When you stop running PPC, the ad stops showing. The traffic stops. The phone stops ringing within hours. There is no residual benefit. The ten thousand dollars you spent last month bought you cases last month. Next month buys nothing.
When you stop investing in SEO, the rankings you’ve built don’t disappear immediately. Practice pages that rank tend to keep ranking, with some erosion, for months — sometimes for over a year — depending on competitive pressure and the underlying quality of the work. The ten thousand dollars you spent on a great practice page two years ago is still producing cases. The asset compounds.
PPC is renting visibility. SEO is buying the building. The first one’s faster. The second one’s yours.
This is the case for SEO as a long-term play even when the short-term PPC math looks better. The firms that have been winning in legal search for the last ten years aren’t winning because they had cheaper ads. They’re winning because they built ranking pages a long time ago that still rank, and the cost basis on those pages has been amortized into nothing. A new entrant to the market has to spend years to build what they already have.
The honest version of this is: PPC is an operating expense. SEO is, if you do it right, an asset on your firm’s balance sheet — invisible to your accountant, but real.
Trust signals — the credibility difference
Most prospects do not know the difference between a paid result and an organic result. They just click. But the data we have suggests that, on average, the organic results convert better than the paid results for legal queries, and the gap is meaningful.
The hypothesis — and it’s just a hypothesis, but the data supports it — is that the prospect’s mental model is “the firm that earned the top organic result is more credible than the firm that paid for the top ad.” Sometimes prospects literally scroll past the ads. Sometimes they don’t, but they trust the click less. Either way, the organic placement carries an implicit endorsement that the paid placement doesn’t.
This effect is stronger in some practice areas than others. Personal injury — where the prospect knows they’re about to choose someone to handle a serious matter — tends to see the credibility gap more sharply. DUI defense, where the buying window is measured in hours and the prospect is panicking, sees less of a gap. Family law sits somewhere in between.
The implication for the SEO-versus-PPC decision is that “cost-per-click” understates the value of the organic placement, because organic clicks convert at higher rates. When you do the cost-per-case math, the organic side of the equation often looks better than it appears on the click-cost line.
The local pack — where this gets interesting
The three-firm local-pack box is the most-clicked surface for most legal queries — typically capturing 40-60% of total clicks for a localized intent search. It is influenced by organic SEO factors. It is also, increasingly, where paid placements show up. Three local-pack-adjacent placements affect the SEO/PPC math.
Standard Google Ads show up above the local pack on most legal queries. A well-funded competitor can crowd the local pack down the page. Even firms with great organic rankings can lose visibility above the fold when a well-funded PPC competitor enters the market.
Local Service Ads (Google Screened) sit above or alongside the local pack on many legal queries — different placements appear depending on the query and Google’s tests. These pay-per-lead, not per click. We’ll discuss them in a moment.
The local pack itself is partly SEO-driven (GBP optimization, citations, on-page signals, reviews) and partly proximity-driven (where the searcher is physically located). A firm with great local SEO but a Phoenix office can still lose the local pack in Scottsdale to a firm with weaker SEO but a closer physical address. More on how local pack rankings actually work for law firms.
Local Service Ads — the third option
Most SEO-versus-PPC conversations treat the choice as binary. In legal, there’s a third option: Local Service Ads, sometimes called “Google Screened” for the legal vertical. These are worth understanding even if you decide not to use them, because the option changes the math.
How LSAs work, briefly. The firm passes a screening process — bar license verification, background check, insurance verification. Once screened, the firm becomes eligible to appear in the LSA placements above the local pack. The firm pays per qualified lead, not per click. Google determines what counts as a “qualified lead” — generally a phone call from the ad lasting over thirty seconds, or a message form submission. Disputes are possible but limited.
The pricing model is different from PPC in a way that matters: you pay only for leads, not for clicks that don’t convert. The cost per lead in competitive markets ranges from $50 to $400, depending on practice area and metro. The signed-case rate from those leads varies wildly — generally lower than from organic, often comparable to PPC, occasionally better.
Where LSAs make sense: firms where the cost-per-click on PPC has gotten so high that the pay-per-lead model is more efficient. Firms with strong intake teams who can convert leads at a high rate. Firms in markets where competitor screening is light enough that LSA placements aren’t yet saturated.
Where LSAs are weaker: firms with intake teams that drop the ball, because you’re paying per call whether your team picks up or not. Firms in markets where every competitor has already saturated the LSA placement, driving lead costs up. Practice areas where Google’s lead-qualification logic struggles — niche practice types where a “qualified lead” by Google’s definition is not a qualified lead by yours.
For most firms doing more than $1M in revenue in a competitive market, LSAs are at least worth testing alongside whatever else they’re doing. The pay-per-lead model creates better feedback than pay-per-click does, because the unit you’re buying is closer to the unit you actually care about. More on whether Google Screened is worth it for lawyers.
The decision framework
Here is how I’d think about the decision, by firm condition. This is opinionated. You can disagree, but here’s the framework.
When PPC is the right starting point
- You need cases this quarter to keep the firm running. The runway requirement makes SEO the wrong primary channel — though you can run SEO in parallel.
- You have a high-volume, short-cycle practice area (DUI, family) where the buying window is hours-to-days and PPC’s faucet quality matches the demand pattern.
- You are entering a new market and need fast feedback on whether the case-type economics work before committing to a longer SEO build.
- You have a great intake team. PPC’s cost-per-case is highly sensitive to intake quality. A great intake team makes PPC much more efficient. A weak one makes it a money pit.
- You have ad-budget tolerance — meaning you can spend $5K to $25K a month on ads with discipline and the cash flow to absorb a few months of optimization before the account is humming.
When SEO is the right primary channel
- You have at least six months of runway and you’re building a firm you intend to operate for the next decade.
- Your practice areas have moderate-to-long buying cycles where prospects research before contacting (PI, estate, business). The credibility advantage of organic placement matters more in these categories.
- Your competitors have weak SEO. The market has surface area to take. This is a temporary condition — once a competitor with a real SEO program enters, the cost of catching up rises sharply.
- You have ad-budget intolerance. Some firms philosophically dislike PPC. That’s fine. SEO is the right call for them, with the understanding that the timeline is longer.
- You want a defensible position rather than a rented one. The compounding nature of SEO assets is a real long-term advantage that PPC doesn’t replicate.
When the right answer is both
For most firms I’d put in the $1M to $10M revenue range, the right answer is both — PPC running in parallel with a serious SEO build, with the budget shifting over time as the SEO matures. The first six months are PPC-heavy because that’s what produces cases now. The middle phase is balanced because the SEO is starting to produce and you have data on which channel produces better cases. The later phase tilts toward SEO because the unit economics are better once the rankings are real.
The honest version is that I do not run firms’ PPC accounts and I won’t pretend to be the right vendor for that. What I tell firms is: hire a specialist PPC agency — there are a few I trust to refer to — alongside the SEO work. The two channels reinforce each other if managed by people who understand the seams between them.
A note on retargeting and display
Brief, because most legal firms shouldn’t be doing this — but worth flagging. Some agencies sell display retargeting (banner ads following visitors around the web) and YouTube pre-roll as part of a “comprehensive” PPC offering. For most legal queries, the conversion math on display and YouTube is significantly worse than search PPC, and the trust signal is, if anything, slightly negative for high-stakes legal decisions. Spend the budget on the channels that produce intent-driven inbound calls, not on the channels that produce brand impressions.
Where we sit
We’re SEO-only. We don’t do PPC, we don’t do LSAs, we don’t manage display campaigns. When a firm comes to us and the right answer is “you need PPC running for the next six months while we build the SEO,” we’ll say so and refer to a specialist. We’d rather lose the all-in retainer and earn the part of the work we’re actually best at than upsell you into a bundle we won’t be the best at any single part of.
If you want a no-pitch conversation about which mix is right for your firm — and whether what you’re spending now is in the right channels — that’s the conversation worth having. Here’s the full philosophy on how we work, and here’s how we charge if you want the budget context first.
— The owner, PHX Search Co.