and Search Rankings
Domain Authority (DA) is one of the most frequently cited metrics in the SEO industry. Law firms spend thousands of dollars annually chasing higher website authority scores but do they actually translate to better search rankings?
DA, DR, and Rankings
DOMAIN AUTHORITY AND RANKINGS
Website Authority vs. Search Rankings for Law Firms
Domain Authority: The Numbers
8 practice areas, 32 keywords
and ranking position (law firms)
higher-ranking site had lower DA
within 5 points on the same sites
Domain Authority (DA) is one of the most frequently cited metrics in the SEO industry. Law firms spend thousands of dollars annually chasing higher DA scores, and agencies routinely use DA as a selling point or performance benchmark. But does it actually matter?
Using the AI-powered research and analysis tools of Custom Legal Marketing's CLM Sequoia platform, this report presents the largest empirical study of its kind examining whether Domain Authority correlates with organic search rankings for law firm websites. We analyzed 12,794 search results spanning 32 keywords across 8 competitive legal practice areas in the 50 most populous U.S. cities. We then conducted a companion analysis comparing Moz DA and Ahrefs Domain Rating (DR) across 1,360 legal industry websites to determine whether these authority tools even agree with each other.
The headline finding: Domain Authority has almost no correlation with ranking position for law firm websites. Among the 9,907 law firm pages in our dataset, the Spearman rank correlation between DA and ranking position was just -0.0819 -- a number so close to zero it is statistically indistinguishable from random noise. The median DA difference between a law firm ranking in position 1 and one ranking in position 8 was just 4 points (31 vs. 27).
When we examined every pair of law firms competing in the same SERP, the higher-DA site ranked lower 45.1% of the time. DA's ability to predict which of two competing law firms will rank higher is statistically equivalent to a coin flip. And when we compared how Moz DA and Ahrefs DR score the same legal websites, the two tools agreed within 5 points only 21% of the time.
Research Methodology for Comparing Domain Authority vs Search Rankings
Powered by CLM Sequoia
Hypothesis
H₀ (Null Hypothesis): Domain Authority is a vanity metric -- there is no meaningful correlation between a website's DA score and its organic search ranking position.
H₁ (Alternative Hypothesis): Websites with higher Domain Authority scores tend to rank in higher positions in Google search results.
Data Collection
Study 1 -- Rankings Analysis: CLM Sequoia executed desktop Google searches for 32 keywords across 8 practice areas in the 50 most populous U.S. cities, capturing the top 8 organic results for each query.
Study 2 -- Tool Comparison: We ran a parallel analysis on 1,360 legal industry websites, pulling both Moz (DA/PA) and Ahrefs (DR/UR) scores for each domain.
Dataset Overview
| Metric | Value |
|---|---|
| Total search results analyzed | 12,794 |
| Unique cities | 50 |
| Unique keywords | 32 |
| Practice areas | 8 |
| Unique domains | 3,423 |
| Law firm results | 9,907 (77.4%) |
| Directory results | 2,422 (18.9%) |
| Resource results | 465 (3.6%) |
| Sites in tool comparison | 1,360 |
Law firms with higher-DAs ranked lower 45.1% of the time. DA's ability to predict which of two competing law firms will rank higher is statistically equivalent to a coin flip.
Statistical Approach to Comparing Domain Authority Scores with Real World Google Search Rankings
We employed Spearman rank correlation to measure the monotonic relationship between DA scores and ranking positions. A negative Spearman rho (ρ) indicates that higher DA scores tend to accompany lower (better) position numbers.
Interpreting Correlation Strength
Key Findings About Website Authority Scores and Rankings
Finding 1: The Overall Correlation Is Weak -- and Misleading
At first glance, the -0.1854 across all sites might seem to support the alternative hypothesis -- higher DA loosely associates with better rankings. But this number is contaminated by the massive DA gap between site types. Directories like Justia (DA 90) and Yelp (DA 93) cluster in early positions while law firms span the entire range with a median DA of just 28. When you isolate only law firm websites, the correlation collapses to -0.0819 -- a number so close to zero it is statistically indistinguishable from random noise.
The distinction between "all sites" and "law firms only" is the central finding of this entire report. Every analysis that follows will reinforce it: the apparent relationship between DA and rankings is a Simpson's Paradox artifact created by mixing fundamentally different types of websites into the same analysis.
Correlation Results: DA and PA vs. Ranking Position
| Metric | Spearman ρ | Interpretation |
|---|---|---|
| DA vs. Position (all sites) | -0.1854 | Weak |
| PA vs. Position (all sites) | -0.1817 | Weak |
| DA vs. Position (law firms only) | -0.0819 | Negligible |
| PA vs. Position (law firms only) | -0.0816 | Negligible |
Finding 2: The "Correlation" Disappears When You Remove Directories
When we isolate only law firm websites competing against each other, the correlation collapses to -0.0819, which is negligible by any standard interpretation. The apparent DA-ranking relationship is a Simpson's Paradox artifact -- site type confounds both variables.
The DA gap between site types is enormous: resource sites average DA 87.1, directories average 71.9, and law firms average just 31.5. These are not differences of degree -- they are entirely different categories of web properties with fundamentally different link profiles, content structures, and roles in the Google ecosystem. Lumping them together and running a correlation is like measuring the relationship between weight and running speed by combining data from humans, horses, and motorcycles. You would find a "correlation," but it would tell you nothing about any individual category.
Average DA by Site Type
Finding 3: Among Law Firms, DA Barely Differs by Position
The total spread from position 1 to position 8 is 3.6 DA points on the mean and just 4 points on the median. To put this in perspective: the DA scoring system runs from 0 to 100, and the entire range of competitive advantage across 8 ranking positions fits within a 4-point window. That is noise, not signal.
Notice that law firm representation actually increases in lower positions -- position 1 has only 925 law firms (57.8% of that position's results), while positions 6-8 average 1,370 law firms each (roughly 86%). This means directories and resource sites are disproportionately occupying the top positions, not because they have higher DA, but because they are different types of sites that Google's algorithm treats differently.
When you look at the "all sites" line declining from 52.4 to 36.0, what you are seeing is not DA predicting rankings. You are seeing directories (with high DA) concentrated at the top and law firms (with lower DA) filling in the rest. The law-firms-only line tells the real story: essentially flat.
The mean and median DA scores for law firms are remarkably flat across all ranking positions:
Mean Domain Authority by Ranking Position
Finding 4: Quartile Analysis Reveals DA's Irrelevance for Law Firms
If DA were a meaningful ranking factor, we would expect to see a dramatic difference between Q1 and Q4. Instead, the average position difference between the lowest DA quartile and the highest is just 0.6 positions. The percentage of sites appearing in the top 5 positions is virtually identical for Q1, Q2, and Q3 (55-57%), with Q4 showing a modest 10-point advantage.
That small Q4 advantage likely reflects a confounding variable: law firms with DA scores above 38 tend to be larger, better-funded operations that also invest more heavily in content, link building, and local SEO -- the factors that actually drive rankings. Their DA score is a byproduct of their broader law firm marketing activity, not its cause.
DA Quartile Analysis: Law Firms Only
Finding 5: 981 Low-DA Law Firms Rank in Positions 1-3
These firms are outranking competitors with DA scores 2-4 times higher. They are doing it through a combination of content relevance, local optimization, E-E-A-T signals, and targeted link building -- not by achieving some arbitrary DA threshold.
Conversely, 62 law firm pages with DA scores above 60 were stranded in position 8 -- including several YouTube pages (DA 100) that Google placed at the bottom of the first page despite having the highest possible DA score. YouTube -- with its DA of 100 -- proves the absurdity of using DA as a ranking predictor. If the site with the highest possible authority score cannot rank above position 8 for a legal keyword, DA is measuring something entirely separate from what Google values.
Low-DA Law Firms Ranking #1
| Domain | DA | Pos | Keyword | City |
|---|---|---|---|---|
| truckcrashlaw.com | 23 | #1 | truck accident lawyer | New York, NY |
| legalhelpnm.com | 15 | #1 | car accident lawyer | Albuquerque, NM |
| howardinjurylaw.com | 15 | #1 | car accident lawyer | Las Vegas, NV |
| seattletrucklaw.com | 20 | #1 | truck accident lawyer | Seattle, WA |
| manninglaw.us | 21 | #1 | personal injury lawyer | Colorado Springs, CO |
| dandavislaw.com | 22 | #1 | car accident lawyer | Oklahoma City, OK |
| calmundelllaw.com | 20 | #1 | car accident lawyer | El Paso, TX |
Finding 6: Correlation Varies by Practice Area but Never Reaches "Moderate"
Medical malpractice shows the strongest law firm DA correlation (-0.1939) -- but even this is solidly in the "weak" category. This likely reflects the high barrier to entry for medical malpractice content. Firms that have accumulated enough case results, medical expertise, and media coverage to build a higher DA also tend to create the kind of deep, authoritative content Google rewards in this sensitive YMYL (Your Money or Your Life) category.
Business law shows a positive correlation (+0.0651) -- meaning lower-DA law firms actually tend to rank slightly better. This may reflect that business law queries are less saturated with directories, and smaller, niche-focused boutique firms with highly targeted content outperform larger general-practice firms despite lower DA.
Family law's all-site correlation (-0.2430) collapses to -0.0417 for law firms -- a textbook demonstration of the Simpson's Paradox effect. Directories dominate early positions in family law searches, inflating the apparent importance of DA. In no practice area does the law firm DA correlation reach the 0.30 threshold for "moderate" correlation. Every single one falls in the "negligible" or "weak" range.
DA Correlation by Practice Area
Finding 7: Page Authority Is No Better Than Domain Authority
One might hypothesize that Page Authority (PA), being page-specific rather than domain-wide, would better predict rankings. Our data does not support this. The total PA spread from position 1 to position 8 is just 2.2 points on the mean and 2 points on the median -- even flatter than DA. The Spearman correlation for PA vs. position among law firms (-0.0816) is virtually identical to DA's (-0.0819).
When we compare which metric correlates more strongly by practice area, the results are split: PA correlates slightly better for employment law, estate planning, family law, and medical malpractice, while DA edges out PA in business law, criminal defense, personal injury, and workers' compensation. Neither metric achieves meaningful predictive power in any category.
Page Authority by Position: Law Firms
| Position | Mean PA | Median PA |
|---|---|---|
| 1 | 39.6 | 38.0 |
| 2 | 39.0 | 38.0 |
| 3 | 38.5 | 37.0 |
| 4 | 38.5 | 37.0 |
| 5 | 38.8 | 37.0 |
| 6 | 37.5 | 36.0 |
| 7 | 37.9 | 36.0 |
| 8 | 37.4 | 36.0 |
Finding 8: High-DA Directories Dominate Early Positions
Directories are overrepresented in the top 3 positions (28.1% vs. their 18.9% overall share) and underrepresented in positions 6-8. Justia alone appears 789 times in the dataset with an average ranking of position 2.7 and a DA of 90. SuperLawyers appears 667 times at an average of position 3.2. These two directories account for 60% of all directory appearances.
This has important implications for law firm SEO strategy: a significant portion of the "top positions" in legal searches are occupied not by law firms, but by third-party directories. Ensuring your firm has optimized profiles on Justia, SuperLawyers, Avvo, and similar platforms is arguably as important as your own site's SEO. It also means that when someone tells you a competitor "ranks above you," they may actually be pointing at a directory listing -- not a competing law firm's website.
Who Occupies Each Ranking Position?
Finding 9: DA Is a Coin Flip - 45.1% of Rankings Defy Authority
We examined every pair of law firms competing within the same SERP -- 26,938 head-to-head matchups in total. In each pair, we asked: does the higher-ranking law firm also have the higher DA score?
The answer: no, 45.1% of the time.
The Coin Flip Test
| Keyword | City | #1 Site | DA | #8 Site | DA | Gap |
|---|---|---|---|---|---|---|
| dui lawyer | Kansas City, MO | kansascityduidefenselawyer.com | 20 | combswaterkotte.com | 71 | 51 pts |
| medical negligence attorney | San Diego, CA | chihaklaw.com | 24 | forthepeople.com | 65 | 41 pts |
| assault lawyer | Las Vegas, NV | cameronlawlv.com | 23 | shouselaw.com | 61 | 38 pts |
| divorce lawyer | San Antonio, TX | simpletexasdivorce.com | 15 | versustexas.com | 50 | 35 pts |
| employment lawyer | Houston, TX | wiley-wheeler.com | 17 | nela.org | 51 | 34 pts |
| workplace injury lawyer | Albuquerque, NM | riveragonzaleslaw.com | 6 | zdfirm.com | 38 | 32 pts |
Out of 26,938 law-firm-to-law-firm position pairs, the site ranking in the better position had a lower Domain Authority in 12,152 cases. That is barely better than flipping a coin. If DA were a meaningful ranking factor, we would expect the higher-DA site to win the vast majority of these matchups -- 70%, 80%, maybe more. Instead, it wins 54.9%. You would get nearly identical predictive accuracy by ignoring DA entirely and guessing randomly.
We also examined a narrower version of this test: in SERPs where a law firm held both the #1 and #8 positions, how often did the #1 site have a lower DA than the #8 site? The answer: 38.4% of the time (315 out of 821 such SERPs). More than one in three times, the site at the very bottom of the first page had a higher DA than the site at the very top.
Look at the inversions table: a law firm with DA 6 ranks #1 for "workplace injury lawyer" in Albuquerque while a site with DA 38 (more than six times higher) sits in the last position. Simpletexasdivorce.com ranks #1 for "divorce lawyer" in San Antonio with DA 15, beating a firm with DA 50. These are not cherry-picked anomalies. With 315 inversions across 821 eligible SERPs and 12,152 inverted pairs across 26,938 total matchups, this is what the data looks like at scale.
Finding 10: Moz and Ahrefs Can't Even Agree With Each Other
If Domain Authority were measuring something real and stable, you would expect different tools measuring the same concept to produce similar scores.
Moz DA vs. Ahrefs DR: Same Sites, Different Scores
Nearly 4 out of 5 legal websites receive scores from Moz and Ahrefs that differ by more than 5 points. The median absolute disagreement is 13 points. And if you took the 100 highest-rated sites according to each tool, only 30 would appear on both lists. The two most widely used authority tools in SEO agree on the "best" legal websites less than a third of the time.
The distribution shapes are fundamentally different. Ahrefs crushes nearly half of all legal sites into the 0-10 range (47.5%), while Moz distributes scores more evenly with a median of 30. The tools apply completely different scoring philosophies: Ahrefs punishes smaller sites with near-zero scores while awarding high-authority sites elevated ratings; Moz spreads the field across the middle of the scale.
The bias reverses depending on site size. Sites with Ahrefs DR 0-10 had an average Moz DA of 23 -- Moz was giving them 20+ points more credit. But at the top end, sites with DR 71-80 averaged only DA 48 -- Ahrefs rated them 25+ points higher than Moz did. The two tools literally trade which one is "more generous" based on the size of the website being measured.
What this means for law firms: If your SEO agency reports your "domain authority" and it goes up by 5 points, ask which tool they are using. Then ask what the other tool says. There is a very good chance the two tools give you contradictory stories about whether your site's authority is improving, declining, or staying flat. If two industry-standard tools measuring the same concept on the same domains can only agree 21% of the time, neither one should be used as a KPI for your marketing campaign.
Are SEO Companies Spamming You About Domain Authority Because They Don't Know What Actually Matters?
If you are a managing partner or marketing director at a law firm, you have received the email. You have probably received it this week:
"Hi [Name], I was looking at your website and noticed your Domain Authority is only [number]. Your competitors have a DA of [higher number]. We can help you increase your DA and improve your Google rankings..."
After analyzing 12,794 search results, we can say with confidence: it is built on a metric that doesn't predict rankings.
What Is Your Agency Actually Reporting?
Conclusion About Website Authority Scores and Rankings
Website authority scores are vanity metrics.
Across 12,794 search results, 9,907 law firm pages, 32 keywords, 8 practice areas, and 50 U.S. cities, Domain Authority fails to demonstrate a meaningful correlation with organic search ranking position. The Spearman correlation of -0.0819 among law firms is negligible. The 4-point median DA gap between position 1 and position 8 is meaningless. 981 law firms with DA scores below 25 proved that top-3 rankings are achievable without high DA. And DA's ability to predict which of two competing law firms will rank higher is barely better than a coin flip at 54.9%.
Making matters worse, the two most widely used authority tools in the industry -- Moz and Ahrefs -- cannot even agree on what a website's authority score should be. They agree within 5 points only 21% of the time and produce fundamentally different score distributions for the same websites.
Domain Authority is a vanity metric -- a number that moves in response to marketing activity but does not independently predict or cause ranking improvements. The legal marketing industry's fixation on DA has created a generation of law firm marketers chasing the wrong scoreboard.
The factors that actually separate position 1 from position 8 in competitive legal markets are the same ones that have always mattered: content relevance, local authority, topical expertise, E-E-A-T signals, and genuine thought leadership. These are where your marketing dollars should be going.
FAQs About Domain Authority and Rankings
Does Domain Authority affect Google rankings for law firms?
No. Our analysis of 12,794 search results across 50 U.S. cities found a Spearman correlation of just -0.0819 between Domain Authority and ranking position for law firm websites. That falls in the "negligible" range by standard statistical interpretation. The median DA difference between a law firm ranking #1 and one ranking #8 was only 4 points, and 981 law firms with DA scores below 25 achieved top-3 rankings for competitive keywords. Google has also confirmed that Domain Authority is not a factor in its ranking algorithm -- it is a third-party metric created by Moz.
What is the difference between Moz Domain Authority and Ahrefs Domain Rating?
Both are proprietary metrics that attempt to estimate a website's ability to rank based on its backlink profile, but they use different methodologies and produce significantly different scores. Our comparison of 1,360 legal industry websites found that Moz DA and Ahrefs DR agreed within 5 points only 21% of the time. Ahrefs concentrates 47.5% of sites in the 0-10 score range, while Moz distributes scores more evenly with a median of 30. When we ranked sites by each tool, only 30 of the top 100 appeared on both lists. The two tools also reverse their scoring bias depending on site size: Moz scores small sites higher than Ahrefs does, while Ahrefs scores large sites higher than Moz does.
Why do SEO companies focus on Domain Authority when pitching law firms?
Domain Authority is easy to look up, easy to compare, and easy to move -- which makes it an effective sales tool even though it does not predict rankings. Telling a law firm their DA is 22 while a competitor's is 45 creates immediate anxiety. DA also responds to raw link volume, so agencies can purchase directory listings or blast press releases to push the number upward and report "progress" without demonstrating any improvement in actual search visibility or client inquiries. Metrics like keyword-specific ranking improvements, organic traffic growth, and new client inquiries are harder to fake and require more expertise to deliver, which is why some agencies prefer to focus on DA instead.
If not Domain Authority, what actually determines where a law firm ranks in Google?
The factors that separate top-ranking law firms from lower-ranking ones include content relevance and topical depth, local SEO signals (Google Business Profile optimization, citation consistency, reviews), E-E-A-T indicators (attorney credentials, case results, media mentions, bar memberships), backlink quality over quantity, and technical fundamentals like crawlability and mobile-friendliness. Our data showed that law firms with DA scores as low as 6 can rank #1 for competitive terms when these other factors are strong, and that firms with DA scores above 60 can be stuck in position 8 when they are weak. The ranking factors that matter are the ones that demonstrate genuine expertise and relevance to the searcher's query and location.
Should law firms completely ignore Domain Authority?
DA has one legitimate use: tracking your domain's relative link profile strength over time compared to specific competitors. If your DA trends upward while competitors remain flat, it may indicate that your content and link-building efforts are gaining traction. However, DA should never be used as a KPI for your marketing campaign, as a predictor of whether you will rank for a specific keyword, or as the basis for choosing an SEO agency. Our research shows that DA's ability to predict which of two competing law firms will rank higher is barely better than a coin flip (54.9% accuracy vs. 50% for random chance). If your agency leads with DA as their primary metric, ask them to report keyword rankings by city, organic traffic growth, local pack visibility, and new client inquiries instead.
The Fine Print (Disclaimers)
This analysis is part of a comprehensive study conducted by Custom Legal Marketing using our proprietary CLM Sequoia platform. The primary dataset includes 12,794 SERP-level data points across 32 legal keywords, 8 practice areas, and the 50 most populous U.S. cities, captured in February of 2026. Domain Authority and Page Authority scores were collected from Moz for each ranking result. A companion dataset of 1,360 legal industry websites was scored using both Moz (DA/PA) and Ahrefs (DR/UR) to compare tool agreement. Site classification (law firm, directory, resource) was performed using CLM Sequoia.
Rankings, Domain Authority, and Page Authority scores represent a point-in-time snapshot and may fluctuate. Google's search results vary by device, location, personalization, and time of day. This study captured desktop results only; mobile rankings may differ. Domain Authority is a proprietary metric calculated by Moz and is not used by Google as a ranking signal. Ahrefs Domain Rating is a separate proprietary metric with its own methodology. Neither metric is endorsed or utilized by any search engine.
All correlation findings describe observed patterns in the data and do not establish causation. Domain Authority is one of many metrics used in the SEO industry alongside content quality, backlink profiles, technical performance, local SEO signals, E-E-A-T indicators, and user engagement signals. The study analyzed top-level, high-intent practice area keywords; findings may not generalize to long-tail queries, informational content, or voice search results. The 26,938 pairwise comparisons referenced in this study include only law-firm-to-law-firm matchups within shared SERPs and exclude directory and resource sites.
This study does not make any conclusions about the DA or DR models' ability to score link portfolios or judge the strength of a backlink portfolio for any given site. It is exclusively to determine if scores correlate with rankings.
© 2026 Custom Legal Marketing, an Adviatech Company. All rights reserved. This research was conducted using proprietary CLM Sequoia technology and methodology.
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