Topical authority assessment and building strategy. Activates when discussing domain topical authority, expertise signals, content authority building, Knowledge Graph topic recognition, E-E-A-T content authority, or competitive authority positioning. Phase 8. Output: {AUDIT_DIR}/topical-authority.md
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Topical authority is the long-term competitive moat in local SEO and the primary determinant of AI visibility in 2025–2026. Google's Helpful Content System (integrated March 2024) explicitly rewards depth over breadth — sites that comprehensively cover a narrow topic cluster outrank sites that superficially cover many topics. The measurable threshold: 25+ articles in a cluster begins accumulating topical authority signals in GSC (SEMrush 2024). AI Overviews cite topically authoritative brands 2–3× more than generalist sites. The 58% AIO surge across 9 industries in early 2026 (Amsive) is directly correlated with businesses that achieved complete cluster coverage vs. those with fragmented content. For local businesses, topical authority on 3–5 core service clusters is more valuable than shallow coverage of 15+ topics.
2025–2026 topical authority benchmarks:
Local business cluster size benchmarks:
| Business Type | Minimum Cluster | Growth Target | Notes |
|---|---|---|---|
| Single-location local | 10–15 pages | 25–30 in 12 months | Service + location pillar structure |
| Multi-location regional | 1 pillar + 5–8 pages/location | 25+ pages per core location | Unique content per location required |
| Enterprise/national | 25+ pages per topic cluster | 50–100+ per cluster | No duplicate SAP content (HCU risk) |
Numbered Action Plan:
knowsAbout to Organization schema — List 5–7 specific topic entities the business is authoritative on. Directly signals topical domain expertise to Google NLP. Effort: 15 min.Read {AUDIT_DIR}/intake-data.md — business name, URL, services, location.
Read {AUDIT_DIR}/topical-gaps.md — topical coverage map and identified gaps.
Read {AUDIT_DIR}/competitor-profiles.md — competitor authority signals.
Read {AUDIT_DIR}/content-inventory.md — content quality baseline.
Tools for this phase:
| Tool | Purpose | Cost |
|---|---|---|
| Ahrefs | Topical authority via Domain Rating, organic traffic per topic cluster, content gap vs. competitors | Paid |
| SEMrush | Topic Research, Topical Authority score (0–100 per domain per topic), Keyword Gap | Paid |
| Surfer SEO | Content Score per page (target: 80+ for pillar, 70+ for cluster), NLP entity coverage | Paid |
| Clearscope | Content grade per page (target: A- for pillar, B+ for cluster), entity density analysis | Paid |
| MarketMuse | Topic model completeness, content brief generation, competitive content gap | Paid |
| Google Search Console | Which topics drive clicks — existing authority signals (free, requires access) | Free |
| AlsoAsked.com | PAA topic mapping — identify question clusters per topic pillar | Freemium |
| Google Trends | Topic momentum — rising vs. declining topics in the niche | Free |
2025–2026 Topical Authority Context:
For each main service/topic the business should own, score 5 dimensions:
| Dimension | 1 (Weak) | 5 (Leader) | Assessment Method |
|---|---|---|---|
| Depth | Surface 500-word overview | 3,000+ word expert pillar with unique data/case studies | Screaming Frog word count + manual quality check |
| Breadth | <5 subtopics covered | 20+ subtopics with dedicated pages | Ahrefs → Site Explorer → Organic Keywords → filter by topic |
| Freshness | Last updated 2+ years ago | Updated within 90 days, current-year stats | GSC → Performance → filter by page, check impressions trend |
| Quality | Generic AI-generated content | Unique expert insights, original data, proprietary methods | Manual review vs. Surfer Content Score ≥80 |
| Recognition | No featured snippets or PAA | Owns 5+ snippets, cited in AIO, topic entity in Knowledge Panel | Ahrefs → SERP Features filter; manual AIO search |
| Core Topic | Depth /10 | Breadth /10 | Freshness /10 | Quality /10 | Recognition /10 | Total /50 | Grade |
|---|---|---|---|---|---|---|---|
| [service 1] | |||||||
| [service 2] | |||||||
| [local topic] |
Grade: 45–50 = A (Market Leader) | 35–44 = B (Competitive) | 25–34 = C (Developing) | <25 = D/F (Weak)
Article count per cluster (2025 threshold):
| Cluster | Articles Published | Status |
|---|---|---|
| [topic] | [X] | <25 = below threshold / 25–50 = building / 50+ = authority |
| Page Type | Minimum Words | Surfer Target Score | Clearscope Grade | Internal Links |
|---|---|---|---|---|
| Pillar page | 3,000 | 80+ | A- or higher | 8–15 cluster links out |
| Cluster page | 1,500 | 70+ | B+ | 1 pillar + 3–5 cluster links |
| Supporting page | 900 | 65+ | B | 1 cluster or pillar link |
| FAQ entry | 250 | N/A | N/A | 1 service/pillar link |
Pages failing these thresholds are topical authority liabilities — they signal low expertise to Google's Helpful Content System.
Content decay detection (using GSC):
Use Ahrefs (Domain Rating + organic traffic per cluster) and SEMrush Topical Authority score:
| Topic | Client Pages | Client TA Score | Comp 1 Pages | Comp 1 TA | Comp 2 Pages | Comp 2 TA | Gap | Priority |
|---|---|---|---|---|---|---|---|---|
| [topic 1] | H/M/L | |||||||
| [topic 2] | H/M/L |
Authority Leader Analysis:
Topical Dominance Opportunities: Topics where competitors have only 1–3 thin pages that client could dominate with a strong cluster:
| Topic | Competitor Coverage | Client Coverage | Opportunity Score |
|---|---|---|---|
| [topic] | [X thin pages] | [Y pages] | High/Med/Low |
best [service] in [city] — does client appear?)Does Google associate this business with its core topics?
[business name] → does Knowledge Panel show core topics/services?[business name] [core topic] → does Google show topic association in results?[core topic] [city] → does Knowledge Panel or AIO mention this business?Who are the top [service] providers in [city]? → is business mentioned?Ahrefs — Traffic Share Proxy (manual formula):
Topical Authority Proxy = Traffic Share for Target Topic ÷ Total Traffic from Topic Keywords
SEMrush — Topical Authority Score:
Knowledge Graph / Entity Authority:
sameAs in Organization schema → directly feeds entity resolutionsameAsknowsAbout to Organization schema with 5–7 core topic entitiesFor topical authority in 2025–2026, content must clear this bar:
| Gap Type | Impact (1–5) | Feasibility (1–5) | Priority Score | Effort |
|---|---|---|---|---|
| Thin pillar page (<1,500 words) → expand to 3,000+ | 5 | 4 | 20 | 6–10 hrs |
| Cluster below 25-article threshold | 5 | 3 | 15 | 4 hrs/article |
| Content decay: page losing >20% YoY clicks | 4 | 4 | 16 | 3–5 hrs/page |
| Missing FAQPage schema on pillars | 4 | 5 | 20 | 30 min/page |
| Expert author bylines missing | 4 | 5 | 20 | 1–2 hrs/page |
| Orphaned cluster pages (no link to pillar) | 4 | 5 | 20 | 15 min/page |
| Low Surfer Content Score (<65) | 4 | 4 | 16 | 2–4 hrs/page |
| AIO not appearing for core queries | 5 | 3 | 15 | 4–8 hrs (cluster expansion) |
Write to {AUDIT_DIR}/topical-authority.md with YAML frontmatter:
---
skill: strategy/topical-authority
phase: 8
date: [YYYY-MM-DD]
business: [Business Name]
url: [URL]
score: [X/100]
status: [leader|competitive|developing|weak]
topics_assessed: [X]
avg_cluster_article_count: [X]
---
Include:
Key consumers:
research/topical-gaps — gap analysis informs authority building prioritiesresearch/keyword-gaps — keyword opportunities mapped to authority clustersoutput/report-generation — topical authority score in master report section 8Output files:
{AUDIT_DIR}/topical-authority.md — primary findings with score, matrix, roadmap{REPORTS_DIR}/phase-8-topical-authority.pdf — auto-generated PDF after phase completesknowsAbout to Organization schema (5–7 topic entities) — Effort: 15 min| Cluster Stage | Article Count | Actions Needed | Timeline |
|---|---|---|---|
| Not started | 0 | Build pillar + 5 cluster pages | Month 1 |
| Below threshold | 1–24 | Reach 25-article minimum | Month 1–3 |
| Building | 25–49 | Add depth, fix orphans, refresh decay | Month 2–4 |
| Authority | 50+ | Lateral linking, original data, AI citation optimization | Ongoing |
| Signal | How to Implement | Effort | Impact |
|---|---|---|---|
| Expert author bylines | Named author + credentials on all content | 1–2 hrs setup | High |
| Author schema | author property linking to author entity page | 30 min/page | High |
| Original research | Local survey, proprietary pricing data, case studies | 8–16 hrs/piece | Very High |
| Wikidata entity | Create Q-ID entry → add to Organization sameAs | 1–2 hrs | Medium |
| Expert source citations | Link to government, research, trade association data | 30 min/page | Medium |
| Real project photos | Before/after, on-site images with schema | 1 hr/gallery | High |
| Metric | Below Threshold | Competitive | Market Leader | Tool to Measure |
|---|---|---|---|---|
| Pillar page word count | <2,000 words | 3,000–5,000 words | 5,000–10,000 words | Screaming Frog word count |
| Surfer Content Score (pillar) | <65 | 70–79 | ≥80 | Surfer SEO Content Editor |
| Clearscope grade (pillar) | C or lower | B+ | A- or higher | Clearscope |
| Articles per cluster | <10 | 10–24 | 25+ (authority threshold) | Ahrefs Site Explorer |
| Internal links (cluster → pillar) | 0 | 1 | 2–3 (varied anchors) | Screaming Frog inlinks |
| Content freshness | >12 months old | 3–12 months | Updated within 90 days | GSC Performance filter |
| Featured snippets owned (per cluster) | 0 | 1–3 | 5+ | Ahrefs SERP Features filter |
| AIO citations (manual test) | 0/5 queries | 1–2/5 queries | 3+/5 queries | Manual search + incognito |
| SEMrush Topical Authority score | <50 | 50–69 | ≥70 (competitive); ≥85 (leader) | SEMrush Domain Overview |
| INP (Core Web Vital) | >500ms Poor | 200–500ms Needs Work | <200ms Good | PageSpeed Insights |
GBP service listings directly feed AI Overviews for local topical queries. For each topic cluster: